Setting up my TBI

Hello all and thanks for having such a great forum.

I have a 4.3 Chevy V6 in my 40 Ford pickup. I installed the engine using a Painless performance TBI wiring harness and so far I have not had much success making it run correctly. I am running the specified computer and as of tonight it's running the Painless specified PROM and Cal-pack (almost) I ordered the correct PROM and Cal-pack from AC/Delco The computer is the 1227747 the PROM is a 16139566 and the Cal-pack is supposed to be a 16060836 and that's the number on the AC/Delco packaging but the number on the chip itself is 16060837A Since the engine is still not running correctly ( dribbly injector spray and it seems quite rich) can anyone tell me if the difference in the numbers on the Cal-pack could be an issue or is it something more on the order of an updated piece?

I have a Holley 12-927 fuel pump and have modified the internal fuel pressure regulator to make it adjustable and it's set for 11 PSI with a new 0-30 PSI gauge. I have had the same results as far as the fuel spray with 2 different sets of injectors. The injectors are the Yellow/Blue color code and the throttle body is P/N 17089018, both of which are supposed to be correct for this engine. Although I had never seen the engine run before I bought it it' supposed to be stock and I have verified that it is an '89 block. I was told it came from an 89 S-10.

The initial timing was set according to the Painless manual and although the engine won't idle smoothly, I've attempted to set the idle speed according to the Painless manual as well. The latest thing I have checked is the correlation of the CTS resistance using a conversion chart found online against my dashboard gauge and they are within 10 degrees of each other. The reference voltage for the CTS is 5.0 volts at the connector with the connector unplugged and key on. I have tried to back probe the CTS connector and measure the reference voltage with the connector installed and the key on but cannot get a voltage reading. Not sure if this is a real problem or pilot error. I know I've thrown out a lot of information but I'm hoping that someone can shed some light as to what needs to be looked at next. Thank you!

What is the four letter BCC code on the chip?

Really need to scan for error codes first, then get a data log to look for issues.

IIRC Painless instructions still have pin B10 Park Neutral wire grounded? This makes ECM think it's always in Park Neutral. When not grounded it is in Drive... this also gives IAC full control of idle.

This PROM doesn't have a 4 letter code like the one I took out. Instead it says 1613 where the old PROM said AKMH. The check engine light is not on and all I have is a basic OBD1 code reader and it's not showing any codes. I checked the park/neutral switch and it's wired to provide the ground signal to the ECM when the truck is in park but the reading at the switch is 11 ohms, not really hard ground. The ground path for that signal is the wire going back to the ECM which the Painless manual says is grounded through the ECM.. Does this help at all?

Can't find a match for those chip numbers as scan id? So I don't know what it is, would have to read it...

Ground in Park and Open in Drive is good.

You should really get at least an error code for EGR if it is driven, won't happen at idle.

Can't do much else without a data log to look for issues?

I usually do all of my own work but there is a guy I regard as really good at a local garage and he seems to know his stuff when it comes to electronics. I will talk to him about the data log and get back to you. Thanks so much!

A scantool and good tech should be able to spot an issue.

Seems you have the basics covered. One thing that is killer on these systems is a vacuum leak!

I checked to make sure that my crank signal "went away" when I released the key from the crank position because I read that the ECM looks at that too, and that was correct. Then I found that the vacuum cap that went on the vacuum port used to connect to the evap can was SPLIT!. I repaired that and the engine runs much better and the injector spray looks conical now but it still appears to be spraying a lot of fuel down there (a rather subjective observation) but you can see it splashing on the throttle plates. My next trick is to attempt to set up the base idle again cause I'm sure that the IAC and the TPS may be out of whack because I was trying to set the speed with the throttle too far open, just to keep the engine running before.

I have ordered an OBD1 cable for my buddies Actron scanner and should have some information this week. I have made an observation that when the engine is cold. it starts readily and tries to idle normally till it warms up, then the idle goes from almost dying to revving up to about 2000-2500 rpm and then it dies back and almost stalls and then revs up again. It does this for a minute or so and then it settles into a constant high speed and you can hear the IAC port whistling like crazy Hopefully whatever data I can get from the OBD1 scanner will help sort this out. I know my status on here is "carb and points" and they're starting to look mighty good about now!

Quote:

Originally Posted by 1great40

I know my status on here is "carb and points" and they're starting to look mighty good about now!

Just because your cars not running right is no reason for profanity!

Look for vacuum leaks... or an exhaust leak. One of the two is causing the issue when you go Closed Loop.

I have searched for vacuum leaks and currently have the vacuum port that goes to my AC controls connected to a vacuum gauge and the vacuum that controls the EGR is pinched off. My exhaust system is 2 inch duals with a crossover pipe in between them and 2 40 series flowmasters. I actually stuffed a rag in one side just to see if backpressure made a difference. It's just a guess but I would say that this truck as little to no backpressure because of the exhaust system, at least at idle speeds. Maybe this is a problem I have created

Scan tool will help find it if you know the data to look for, if not it will just tell codes.

Around here we use TunerPRo RT, cable to laptop so we can record logs and help each other with the data.

I got my cable for the Actron scanner yesterday. I'm guessing that i will be able to read data from the various sensors. do I need software like winaldl or tuner pro? Not sure what to look for or how to understand the data when I see it but i really do want to learn, besides, the first cruise night of the season is in less than 3 weeks :(

Quote:

Originally Posted by EagleMark

Can't do much else without a data log to look for issues?

Quote:

Originally Posted by EagleMark

Scan tool will help find it if you know the data to look for, if not it will just tell codes.

Around here we use TunerPRo RT, cable to laptop so we can record logs and help each other with the data.

Quote:

it starts readily and tries to idle normally till it warms up, then the idle goes from almost dying to revving up to about 2000-2500 rpm and then it dies back and almost stalls and then revs up again. It does this for a minute or so and then it settles into a constant high speed and you can hear the IAC port whistling like crazy

IAC port noise is common with air cleaner off but also a sign the throttle blades are closed to far so all air has to come through IAC port. When this happens air and fuel do not mix well because throttle blades are closed to far... did you close throttle blades because of high idle?

Quote:

Originally Posted by EagleMark

Look for vacuum leaks... or an exhaust leak. One of the two is causing the issue when you go Closed Loop.

Without logs we can see it's up to you to read data from Scan Tool and find the issue.

Hi Guys!

I got the Actron scanner hooked up and downloaded a bunch of data from the scanner I'm posting it hereI hope someone can point me in the right direction cause I'm a total noob with this stuff.

1989 Astro/Safari
Z=4.3L TBI

Vehicle Data List

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL DIV
AIR SW SOL CONV
BATTERY(V) 13.8
BLM 114
CLEAR FLOOD OFF
COOLANT(øF) 192
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 74
INTEGRATOR 127
LOOP STATUS CLSD
MAP(V) 2.04
O2S(mV) 719
O2S CROSSCNTS 246
P/N SWITCH P/N
PROM ID 9461
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.65
VEHSPEED(MPH) 0
Frame: 0 Time: 0.0

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL DIV
AIR SW SOL CONV
BATTERY(V) 13.7
BLM 114
CLEAR FLOOD OFF
COOLANT(øF) 192
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 74
INTEGRATOR 126
LOOP STATUS CLSD
MAP(V) 2.06
O2S(mV) 98
O2S CROSSCNTS 246
P/N SWITCH P/N
PROM ID 9461
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.65
VEHSPEED(MPH) 0
Frame: 1 Time: 1.1

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL DIV
AIR SW SOL CONV
BATTERY(V) 13.7
BLM 114
CLEAR FLOOD OFF
COOLANT(øF) 192
ENGINE RPM 975
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 74
INTEGRATOR 127
LOOP STATUS CLSD
MAP(V) 2.08
O2S(mV) 861
O2S CROSSCNTS 248
P/N SWITCH P/N
PROM ID 9461
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.65
VEHSPEED(MPH) 0
Frame: 2 Time: 2.3

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL DIV
AIR SW SOL CONV
BATTERY(V) 13.8
BLM 114
CLEAR FLOOD OFF
COOLANT(øF) 192
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 74
INTEGRATOR 127
LOOP STATUS CLSD
MAP(V) 2.04
O2S(mV) 768
O2S CROSSCNTS 251
P/N SWITCH P/N
PROM ID 9461
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.65
VEHSPEED(MPH) 0
Frame: 3 Time: 3.4

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL DIV
AIR SW SOL CONV
BATTERY(V) 13.7
BLM 114
CLEAR FLOOD OFF
COOLANT(øF) 192
ENGINE RPM 975
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 74
INTEGRATOR 127
LOOP STATUS CLSD
MAP(V) 2.08
O2S(mV) 795
O2S CROSSCNTS 0
P/N SWITCH P/N
PROM ID 9461
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.65
VEHSPEED(MPH) 0
Frame: 4 Time: 4.5

All data looks good!

Except one thing that maybe someone as sick as me may notice... since it's my favorite PROM ID... PROM ID 9461 is ASDU which is for an 8 cylinder... but the scan ID can be used in others...

So I searched for your Prom number 16139566 from first post and guess what I found? ASDU which is an 8 cylinder bin/chip.

Have no idea if your smaller chip/netres is correct. Pull the big chip and see if it will run? It should run although not well...

Thanks for reviewing the data. I guess i could put the 6 cylinder prom back in and see what happens. I have the 8 cylinder one in there because that's what painless specified in their manual. Also, since I didn't post every frame that the scanner picked up, I reviewed stuff and noticed that in some frames, the o2 sensor says "rich" with a voltage of about 800 mv and then in another frame, I have a similar voltage but the sensor reads "lean" . should these two parameters correlate? what is the crossover point (voltage) where the sensor goes from rich to lean? not that this might mean anything, I'm just learning. And one more dumb question... If the data looks good why then will theis engine not idle below 1000 rpm and why does it run so rough. I'm reading 15 inches of vacuum at 1000 rpm...it's on the low side but probably OK since the throttle/iac is admitting so much air... I'm stumped

And what does 3rd gear sw "ON" mean... The one time i tried to drive this thing it wouldn't shift out of first and I forgot to mention that all the data i posted was taken with the VSS unplugged.

If the Painless manual told you to run an 8 cylinder chip in a 6 cylinder then.... well I don't know, I'm baffled?

O2 sensor voltage is constantly switching past the mid point, in this case .451 volts. Yes it is supposed to switch rich/lean.

Your IAC was in the 70's which is to high, probably a worn or rebuilt throttle body and needs the throttle blade/Min Air Adjustment done.

Quote:

If the data looks good why then will theis engine not idle below 1000 rpm and why does it run so rough. I'm reading 15 inches of vacuum at 1000 rpm...

My first guess would be it has an 8 cylinder chip running a 6 cylinder? :confused:

Quote:

And what does 3rd gear sw "ON" mean... The one time i tried to drive this thing it wouldn't shift out of first and I forgot to mention that all the data i posted was taken with the VSS unplugged.

Not sure what 3rd gear switch is? Mine does not have that. If your VSS was unplugged it should have set an error code? Why it won't shift out of first has nothing to do with the ECM, it has no control of transmission except for TCC lockup which needs VSS. Have you adjusted the 700R4 transmission TV cable properly?

I'm learning a lot of stuff: The VSS in my TH700R4 will notwork with the ECM unless it is used with the speed buffer from the donor truck. It was causing the scanner to report over 200 mph while going up my driveway and the TCC would lock the minute the truck was in motion. Then the VSS was disconnected and now the TCC stays off. I ordered a Dakota Digital SGI-5 Universal signal interface to correct this problem.

While I was fooling around under the hood I noticed that the throttle shaft had lots of play in it. I'm thinking that maybe when I was removing the throttle lever from the donor TBI to install on a better one, I got my "recipients" mixed up and built up the wrong throttle body. Anyway, I found a good one in my junk and cleaned it up.

I assembled the "new" throttle body today and when I installed it, that engine would idle so slow you could hear the individual injector clicks! I set the minimum air and idle speed according to the GM procedure and since this is an OLD (1989) pre-Vortec, pre-balance shaft engine, I had to find a sweet spot where the idle was as smooth as it was gonna get without just plain running it too fast. I know there weren't the smoothest idling engines in the world but I think it doesn't make much difference when the truck is parked at a cruise night :). I still need to put the scanner back on there and look at my IAC count but I'm confident that it is in the correct range now.
Once I get the SGI-5 set up, I should be able to reconnect the VSS and not have the scanner tell me I'm doing 200 MPH crawling up my driveway and the instant TCC lockup should go away too. Then I need to get it to the guy who did the transmission to see why it wont shift correctly despite having set the TV cable according to the GM procedure. Thanks again to all who helped!

More data was taken with the Actron because it seemed to me that the engine was idling fast again. The data is below but the long and short of it seems that even though the minimum air adjustment was set to 450 +/- RPM with the transmission in drive (this is from my Alldata online manual) once everything is re- connected, the engine runs at 1000 RPM and my IAC numbers are still in the 70-80 range. I'm not understanding something here... The minimum air setting puts the engine at 450 RPM in drive, Then the IAC sends the idle to 1000 and my IAC count goes high. If a normal idle IAC range is in the 20's or so it would seem that the minimum air would need to be set to a much higher RPM to allow the IAC counts to be lower. What am I missing (beside a brain)

1989 Astro/Safari
Z=4.3L TBI

Diagnostic Codes

Current Code 24
Vehicle Speed
Sensor (VSS) Short
Circuit

Vehicle Data List

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 466
O2S CROSSCNTS 66
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:-5 Time:-5.7

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 706
O2S CROSSCNTS 69
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:-4 Time:-4.5

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 506
O2S CROSSCNTS 72
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:-3 Time:-3.4

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 382
O2S CROSSCNTS 76
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:-2 Time:-2.3

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 400
O2S CROSSCNTS 76
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:-1 Time:-1.1

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 826
O2S CROSSCNTS 78
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.47
VEHSPEED(MPH) 0
Frame: 0 Time: 0.0

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 528
O2S CROSSCNTS 82
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame: 1 Time: 1.1

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 484
O2S CROSSCNTS 88
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame: 2 Time: 2.3

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 315
O2S CROSSCNTS 88
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame: 3 Time: 3.4

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 848
O2S CROSSCNTS 90
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.47
VEHSPEED(MPH) 0
Frame: 4 Time: 4.5

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.94
O2S(mV) 502
O2S CROSSCNTS 96
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame: 5 Time: 5.7

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 382
O2S CROSSCNTS 98
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame: 6 Time: 6.8

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 444
O2S CROSSCNTS 101
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.47
VEHSPEED(MPH) 0
Frame: 7 Time: 7.9

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 826
O2S CROSSCNTS 104
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.47
VEHSPEED(MPH) 0
Frame: 8 Time: 9.1

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 497
O2S CROSSCNTS 106
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame: 9 Time:10.2

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 311
O2S CROSSCNTS 106
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:10 Time:11.3

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 528
O2S CROSSCNTS 112
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:11 Time:12.5

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 653
O2S CROSSCNTS 115
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:12 Time:13.6

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 448
O2S CROSSCNTS 116
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:13 Time:14.7

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 786
O2S CROSSCNTS 118
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:14 Time:15.9

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 804
O2S CROSSCNTS 126
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:15 Time:17.0

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1025
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.94
O2S(mV) 733
O2S CROSSCNTS 129
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:16 Time:18.1

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 484
O2S CROSSCNTS 132
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:17 Time:19.3

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1025
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 488
O2S CROSSCNTS 135
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:18 Time:20.4

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 821
O2S CROSSCNTS 140
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.47
VEHSPEED(MPH) 0
Frame:19 Time:21.5

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.94
O2S(mV) 480
O2S CROSSCNTS 144
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:20 Time:22.7

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 515
O2S CROSSCNTS 146
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:21 Time:23.8

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 573
O2S CROSSCNTS 149
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:22 Time:24.9

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 826
O2S CROSSCNTS 152
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.47
VEHSPEED(MPH) 0
Frame:23 Time:26.1

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 373
O2S CROSSCNTS 153
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:24 Time:27.2

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 595
O2S CROSSCNTS 157
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.47
VEHSPEED(MPH) 0
Frame:25 Time:28.4

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 786
O2S CROSSCNTS 160
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:26 Time:29.5

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.94
O2S(mV) 773
O2S CROSSCNTS 166
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:27 Time:30.6

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 466
O2S CROSSCNTS 168
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:28 Time:31.8

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.98
O2S(mV) 573
O2S CROSSCNTS 171
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:29 Time:32.9

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1025
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 542
O2S CROSSCNTS 173
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:30 Time:34.0

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 14.0
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 975
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 453
O2S CROSSCNTS 174
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:31 Time:35.2

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.8
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 737
O2S CROSSCNTS 176
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:32 Time:36.3

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 426
O2S CROSSCNTS 185
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:33 Time:37.4

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 RICH
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 555
O2S CROSSCNTS 188
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:34 Time:38.6

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 488
O2S CROSSCNTS 193
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
Frame:35 Time:39.7

CODES PRESENT NO
3RD GEAR SW ON
AC REQUEST OFF
AIR DIVRT SOL NORM
AIR SW SOL CONV
BATTERY(V) 13.9
BLM 153
CLEAR FLOOD OFF
COOLANT(øF) 191
ENGINE RPM 1000
EXHAUST 02 LEAN
HIGH BATTERY NO
IAC POSITION 77
INTEGRATOR 132
LOOP STATUS CLSD
MAP(V) 0.96
O2S(mV) 417
O2S CROSSCNTS 195
P/N SWITCH P/N
PROM ID 3051
TCC LOCKUP NO
TCC SOLENOID OFF
TPS SENSOR(V) 0.45
VEHSPEED(MPH) 0
FRAME: 36

the blm an int numbers are a lot higher in the last data, did you change the eprom?

I am running the original 6 cylinder prom now

Don't feel bad, I feel like I am missing a brain also.

I am pretty new to this also since I've converted from a carburetor to TBI on an engine that was never set up with TBI, so am having to ask for lots of help here.

Hope they remain patient with me.

I don't know if any of the info in my "1st run with 1227747" thread will help or not, but might be worth a read.

Measure the voltage between terminals A9 and A12. If it's somewhere lower than 4 volts then maybe something (the scan tool or the wiring harness) is putting the ECM into a test mode. The self-test RPM setpoint is probably set to 1000 RPM like on the ARJT PROM. And yes, stick with a 6-cylinder PROM. The RPM will not read properly with an 8-cylinder PROM.

Quote:

Originally Posted by 1great40

More data was taken with the Actron because it seemed to me that the engine was idling fast again. The data is below but the long and short of it seems that even though the minimum air adjustment was set to 450 +/- RPM with the transmission in drive (this is from my Alldata online manual) once everything is re- connected, the engine runs at 1000 RPM and my IAC numbers are still in the 70-80 range. I'm not understanding something here... The minimum air setting puts the engine at 450 RPM in drive, Then the IAC sends the idle to 1000 and my IAC count goes high. If a normal idle IAC range is in the 20's or so it would seem that the minimum air would need to be set to a much higher RPM to allow the IAC counts to be lower. What am I missing (beside a brain)

I think your brain is OK, just needs to understand a scantool checks for codes and gives some basics for a tech to diagnose trouble areas! If he knows what to look for. It can not give in depth data that we need to tune with or data we can use to help you more then something blindingly obvious, which yours does not.

Like what daleulan said, some old scantools and some cables use a 10K resistor across A and B of ALDL port, this is needed in some 160 Baud systems to get data flowing. But it puts the ECM in ALDL mode which raises RPM to usually 1000 depending on bin and also adds timing. No way to tune like this. Also your scantool is not showing the 3 test modes possible.

This ECM will also idle higher in Park/Neutral then in gear. If you have a good low idle in gear and it goes up when you attach the scantool you can bet it is putting ECM in ALDL mode.

For real help here or anywhere that a good tech does not have his hands on the vehicle we need data logs from a Tuner Program like TunerPro RT. Here's a quick write up on what it does and how to use it, the ADX and XDF files linked to in that post are the ones you need!
http://www.gearhead-efi.com/Fuel-Inj...-a-must-read!-)

It's all you need to scan, record data and the other side is all you need for making adjustments to your chip/bin file. Add some hardware to burn chips and you can dial in anything you want.