1228747 to 1227477 swap.

[1leg]

Thought i should start a new tread as i'm sure i will have a few question that others might find helpful. After this swap is complete and running properly i will begin the 427 swap.
1989 v-2500 suburban 5.7tbi/TH400 4.11 gears with 1228747

Swapping in a 1227747(asdz) from a 1989 G20 5.7tbi/700r4 2.73 gears.

Plugged in with no wire changes:
Started: OK
Idle Park: good
Idle in gear: OK(could be aftermarket cam)
acceleration: slight stumble on take off
transmission: shifted OK
CEL: NONE
Problem noted:
Transmission kicks down in to low gear at speeds over 30mph. TCC being engaged do to ECU set-up for 700r4
slight stumble win taking off from a stop on low speed.

[1leg]

I opened two TPRT windows to compare a 1988 7747 bin for a 5.7/3 speed auto to a ASDZ bin from this site. I modified the ASDZ bin to the same TCC setting as the same on the 3 speed auto bin.

I have not installed the G2 yet, a little worried about doing it myself. will the above work to fix the kick down/TCC issue.

[EagleMark]

SOunds like you figured out how to do the bin, what are you worried about? Soldering in the G2?

[1leg]

SOunds like you figured out how to do the bin, what are you worried about? Soldering in the G2?
Well i'm hoping it wasn't my solder job that screwed up my 8747.

[1leg]

Did i program this right.
1621

[EagleMark]

Well i'm hoping it wasn't my solder job that screwed up my 8747.Me too but stuff does happen...


Did i program this right.
1621
Looks right to me. Here's the Moates offset chart.
http://support.moates.net/2010/04/05/programming-chips-using-offsets/

[1leg]

I got the G2 installed, took it for a drive. No log just wanted to make sure the kick down wasn't getting activated.
Chip using stock BIN but with the TCC set to the same as a 3speed auto bin i found. I had a issue when installing the G2, when removing the pins part of the circuit board mask came of. i had to run a small jumper wire. i should have taking a picture. I did a ohm check and everything looked good.
Started fine
No CEL
Still has stumble off idle
Drove fine for about 1 mile. I was coming to the bottom of the hill and the truck stopped running, I coast it to a pull out area. Started truck up wouldn't stay running unless i gave it gas, then it would surge really bad. Lucky i had a wrench to disconnect batt. the truck started ran fine, took off short time 100 yard started surging. put trans into N to bring idle up still surging. Disconnected batt again. Started up fine got her turned around for the run back home, made it to the top of the hill surging the whole time. Had to do the Reset a few more times before making it home. I never got a CEL when the engine was running.

Do i need to remove the wire at A7 along with the zeroing out the TCC stuff in the bin.

[EagleMark]

Not sure? If you don't have TCC then no need for wire.

Surging? Don't you have a cam in that that was tuned in other bin? Could be that, don't know why you needed to reset each time though, somthing not adding up. Data log may show an issue. Double checking all wiring since you now have a ECM swap, may need to do something else to bin other than just one item for TCC...

Post up bin!

[1leg]

here's the bin. This is copy from this website, I didn't copy the stock chip yet.

The surging is more like a bucking. almost like the fuel is being cut off then on. No time yet to hook up the laptop for a log. maybe tomorrow.

[gregs78cam]

Well, I did a compare with the .bin I had running in my truck when it had a '7747, and aside from a few small differences, I noticed that the last address L0FFF in yours has $00, in mine it was $96. That is part of .bin that is not user adjustable. Change yours to $96 and try it.

I also noticed that your O2 thresholds vs airflow are a little different, I wonder if your ecm is trying to correct fuel, and the thresholds you have are not playing well with the PID routine, causing the oscillation (surging) to be uncontrollable.

One more thing, you have the engine startup RPM set to 561 rpm. Try dropping that to between 450 and 500rpm.

[1leg]

Thanks, I'm going to try and copy the stock chip tonight and start with it. It ran fine except for the TCC. Could you pm me your bin for me to try. Also not sure how to change that address is do you use hex editer.

[EagleMark]

Well, I did a compare with the .bin I had running in my truck when it had a '7747, and aside from a few small differences, I noticed that the last address L0FFF in yours has $00, in mine it was $96. That is part of .bin that is not user adjustable. Change yours to $96 and try it.

I also noticed that your O2 thresholds vs airflow are a little different, I wonder if your ecm is trying to correct fuel, and the thresholds you have are not playing well with the PID routine, causing the oscillation (surging) to be uncontrollable.

One more thing, you have the engine startup RPM set to 561 rpm. Try dropping that to between 450 and 500rpm.that's a lot of things? Maybe that chip is just wrong?

That's not a stock chip.

BCC result page!



BCC used in 1989. (Scroll down for more info)

BCC= ASDZ9578

Scan id= 9501

Part number= 16139577

Release date= 02/02/89

Engine size= 5.7

Trans Type= Auto trans

ECM/PCM: ECM #01227747
Used in trucks:

GMC
Possibly used in:

C1500,2WD,1/2 TON

C1500,2WD,1/2 TON

C2500,2WD,3/4 TON

C2500,2WD,3/4 TON

G10 VAN,2WD,1/2 TON

G15 VAN,2WD,1/2 TON

G20 VAN,2WD,3/4 TON

G25 VAN,2WD,3/4 TON

Options:
Without GU2 AXLE, REAR, 2.73 RATIO

With L05 5.7L GAS 8 CYL (5.7K) V8 TBI

With MD8 AUTO 4 SPD THM 700 R4

With NB2 CALIFORNIA REQUIREMENTS

[gregs78cam]

I tried both of these and I think that AMUR is the one I settled on.

[EagleMark]

Here's the bin from my Suburban. It has Hiway Lean Cruise enabled so this might not be good if you tow big loads! Also set to kick out if high load, so may be fine? Also has ESC forced knock test turned off so your motor does not have to be forced to knock once every startup cycle. It runs great in my 1990 Suburban 5.7L 2wd 700R4.

I looked at last chip I did for 5.7L turbo 350 and made the same changes... since it's an automatic bin all the IAC logic is correct for auto driving.

I also zipped the $42-1227747-V4.xdf with I think 3-4 changes (like above for turbo 350) to disable TCC, turn off Code 24 VSS, and 2 other bit changes for manual trans. They are all marked in XDF with **OFF** or **SET TO MANUAL** at the end of paremeter name so you can see what I did.

I don't understand what you did for the Turbo 400 kickdown, nor have I ever done that or researched it but you seem to have that worked out...

[EagleMark]

gregs78cam was posting same time I was getting this stuff ready for you! Ha!

My chip is ADSU hypertech stage 1 I found in an ecm. It has very little changes from stock, believe me I searched it! Then added Hiway and ESC test done. Then was tuned to my Suburban which was mechanically sound. So it should run good with known changes needed for turbo 350 auto trans.

[1leg]

Thanks guys. I will take a look at everything you guys posted. I will make a chip for both bins and give them a try in the burban maybe tomorrow, raining in sunny so cal today.

[1leg]

Ok, to turn off TCC all i need to do was set the (Min temp for TCC lock) to a max 147'C.? my bin has min temp set to "0", Doesn't explain surging but maybe it caused everything else go out of wack... The motor surged in neutral and park until i did reset. hmmm.

[EagleMark]

That's not right either! Greg found to many weird things wrong with that bin! Chuck it! Did you find it here that way or was it stock when you found it? My goal is to only have known good chips in ECM information threads. We have a major dump of bins for questionable or only thing available etc...

[1leg]

This bin was downloaded from here then i modified it to hopefully disable TCC. i changed the file name to have th400. sorry for the confusion.
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?304-1227747-ECM-Information-42&p=2611&viewfull=1#post2611

[1leg]

I have been doing some comparing between bins and noticed some odd thing i don't under stand. There are Table that look like this (---fuel---) and they normally have a single value, and most of them seem to say 127.00 or 121.00. what are these tables for? the reason i ask is that on my bad ASDZ bin they all say 159.00. :rolleye: :mad1:

[gregs78cam]

Those are just separators between parameter type. don't worry about those.

[1leg]

BIN from the stock chip.

[gregs78cam]

wow, none of the ROM looks anything like the rest of the files I have.

EDIT: OHHHH. That's why, Mask ID $40? Looks like the whole .bin is just ????wrong????

[1leg]

wow, none of the ROM looks anything like the rest of the files I have.

EDIT: OHHHH. That's why, Mask ID $40? Looks like the whole .bin is just ????wrong????

That chip ran fine other then TCC kicking the TH400 down.

[EagleMark]

I can't even find a $40?

So is that the file he got from this website is wrong? If so I will delete it... or is it wrong after he made changes? I really don't want bad bins floating around.

[EagleMark]

BIN from the stock chip.That bin is just wrong, please delete it. I don't know what happened? It has 1757 differences to stock ASDZ chip.

[1leg]

That bin is just wrong, please delete it. I don't know what happened? It has 1757 differences to stock ASDZ chip.

Deleted... But that was a copy of the stock chip pulled from the G20 ECU. and it said ASDZ. And it ran fine other then the TCC. Wierd. Could i have screwed up coping it. I burned 4 chips with different BINs. Hopefully I can get this thing to stay running tomorrow, if its not raining.

[EagleMark]

Man if my truck didn't run in the rain I would have to fix it? :laugh:
Must have read it wrong? Something was wrong! It was not even close to anything being correct... you should really only need one bin, mine! :rockon:

[1leg]

Mark
Your 1leg bin youposted above is for th350 trans? So should work with my th400 I'm not worried about kickdown now. I just need this thing to run.

[EagleMark]

No it's 700R4 that I made changes to disable TCC and ran in a turbo 350. So it will be fine with yours except the Turbo 400 Kckdown I have never tested.

[1leg]

Ok got the Suburban running today on the first chip i tried.
Ran ok
Idle needs work
Power seemed a little down(hard to tell really)
no TCC lock-up
No kickdown
Temp still reading high

1990-V3-1leg bin
$42-1227747-1leg.xdf
Below are a couple of logs, 1st log has a few miles of me driving around the block. the second log is just idling in the driveway after i drove it around. It seemed to have a little bit of a rattle when idling so i did a log. when i say rattle i don't mean engine knocking just not running smooth. weird didn't do that before.

I have a few question but i will let you guys look at the logs first. when you get the time.

Thanks guys for all the help!!! I still have a lot to learn but i'm still having fun.

[1leg]

EagleMark, Could you tell us what you did to disable the TCC in the 7747 bin you gave me.:rockon:

[EagleMark]

I did earlier...

I also zipped the $42-1227747-V4.xdf with I think 3-4 changes (like above for turbo 350) to disable TCC, turn off Code 24 VSS, and 2 other bit changes for manual trans. They are all marked in XDF with **OFF** or **SET TO MANUAL** at the end of paremeter name so you can see what I did.

Now like I said I don't know what your doing for the turbo 400 kickdown? If your using the TCC signal it is off!

If I can find time later I'll watch your logs and see if I can find anything. I actually find it relaxing to watch logs and play with monitors to look for stuff... yeah I know I'm weird...

[gregs78cam]

One thing strange I noticed about two of the .bins that I got last week, was that the bit for "TCC Only" was checked - in manual .bins.

[EagleMark]

One thing strange I noticed about two of the .bins that I got last week, was that the bit for "TCC Only" was checked - in manual .bins.Maybe Manual selected turns off TCC?

[EagleMark]

Ok got the Suburban running today on the first chip i tried.
Ran ok
Idle needs work
Power seemed a little down(hard to tell really)
no TCC lock-up
No kickdown
Temp still reading high

1990-V3-1leg bin
$42-1227747-1leg.xdf
Below are a couple of logs, 1st log has a few miles of me driving around the block. the second log is just idling in the driveway after i drove it around. It seemed to have a little bit of a rattle when idling so i did a log. when i say rattle i don't mean engine knocking just not running smooth. weird didn't do that before.

I have a few question but i will let you guys look at the logs first. when you get the time.

Thanks guys for all the help!!! I still have a lot to learn but i'm still having fun.
You do have some sort of cololing issue. It goes up to 230f when warming up then goes down when cruise spped, then back up to 225 at stop, then back down at cruise, 212 at 50. So may be a plugged radiator? Sticky or inaccurate T stat, water pump impeller? I don't know but it's warm.

Was that the bin I sent? If so something is wrong, I know you have a cam, right? But still idle was 800 when warming up and never changed all the way to 230F and you were still in open loop till 14.13 minutes in log? So that may be why, idle in closed loop on bin is lower, but mines goes closed loop way early during warm up, could be the rich just keeping o2 sensor to cool? Soon as you started driving it finally went closed loop. Then watching idle in gear it was rich, like 114 BLM.

Idle in first log 800 RPM is not what was in that bin and your IAC was 32 and never moved. See above...

Idle in drive at 21.12 was 550 RPM 38 IAC RICH at 52 kpa map 11.61 vacuum. Mine is 550 drive, idle 16 vacuum. So that's showing cam and yes you'd need to tune that to get rich BLM idle under control.

Second log, Idle log shows closer to closed loop idle RPM and lower IAC and in closed loop! But BLM is RICH at 115. Vacuum at 16 because of cam would be reason so tune is in order, my stock cam at idle in park is 18+ vacuum. Then from running so rich it must have cooled off O2 sensor and went open loop again.

Never a knock, but that rich I wouldn't expect one. Overall your entire BLM history table, taken when closed loop only, was all rich except fot 90-100 kps which was just about right at 130, if went WOT there it would add PE and probably be good.

Only thing I noticed off was TPS voltage at idle at .74 and should be .54 so an adjustment is in order but don't think that is causing any issues.

History average BLM just a cut and paste below not accurate to table but gives an idea. Open history BLM and run log. Wait till 14.13 when it goes closed loop and clear history table, then use that data at end of log to adjust VE. If these were all 128 you'd be spot on!

113.231 111
110.125 113.939 114.660 121 125.500 128 126
111.727 110.135 113.333 108 126.529 126.143
116 110.600 117.500 108.111 116 116.167 127.118 129.105
123.700 115.500 111 113.083 112.462 118.300 124.952 131.743 130
126 126 110.941 113.267 120 127.737 131.313
118 128.300 128
130.750 127.250


History STD Deviation from 128 shows how far to adjust those cells if they were all 0s you'd be spot on!. Some only have one count so I would exclude them. Some here off by 4 and up to 13 % to rich.
4.711 0
4.016 1.961 5.903 9.899 5.952 0 0
4.429 4.289 9.238 0 5.558 3.436
6.624 4.248 13.435 0.333 9.187 5.408 6.596 4.653
5.187 10.607 7.506 5.838 5.222 1.947 5.679 2.214 0
0 0 5.214 3.555 4.472 5.606 2.243
0 1.947 0
3.202 1.500

HTH! :rockon:

[1leg]

Thanks for taking look, I don't plan on adjusting anything on the tune until I get the temp to read right. I'm positive this truck is not running this hot, and I will have a mech-temp right next to the CTS soon to confirm. I think it might be the sensor wire, I will replace it after I confirm the temp is reading wrong. It runs and that's important. I will get the tps and iac all reset,

[EagleMark]

Yeah somethings not right with temp as you have comfirmed it on 2 differant ECMs. First ECM we know now was faulty.

Here's the procedure for intial setup, not normally needed on stock motor unless TBI has been rebuilt or cammed engine or conversion to other engine.
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?581-Initial-Setup-of-TBI-TPI-and-MPFI-systems.-Min-Air-Adjust-TPS-set-and-Fuel-Pressure

So what did you do for turbo 400 kickdown? I thought you said it was working but the bin I sent was TCC totally disabled...

[1leg]

Yeah somethings not right with temp as you have comfirmed it on 2 differant ECMs. First ECM we know now was faulty.

Here's the procedure for intial setup, not normally needed on stock motor unless TBI has been rebuilt or cammed engine or conversion to other engine.
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?581-Initial-Setup-of-TBI-TPI-and-MPFI-systems.-Min-Air-Adjust-TPS-set-and-Fuel-Pressure

So what did you do for turbo 400 kickdown? I thought you said it was working but the bin I sent was TCC totally disabled...

I don't have kickdown at the moment, which is fine now. After i get the temp reading correct and the IAC,TPS and fuel pressure all set i will then start on the tune. I will be moving soon. Hopefully we will find a good place with a garage and RV parking. I hope to have all this corrected this weekend and start logging everyday so can start loading excel with data.

Questions:
What Fuel table do i edit on this bin? It shows 3: VE % (FL1) corrected, VE% (FL1), and VE% (FL2)
I read some where that 1 way to do it would be to ZERO out the VE%(FL2) and some how add it to the other VE table.

[EagleMark]

Dave posted up a wiring diagram, pin changes and turbo 400 information etc...

http://www.gearhead-efi.com/Fuel-Injection/showthread.php?610-1228747-Turbo-400-4F

[1leg]

That great info, Thanks to Dave for doing that. I was sick all weekend and didn't get anything done on the suburban. I was able to get the TPS down to .61 tonight. I'll work on it this weekend and report back.

[EagleMark]

I'm thinking the 1227747 can control the turbo 400 if you look at this diagram... A7

http://www.gearhead-efi.com/Fuel-Injection/attachment.php?attachmentid=340&d=1321248009

[gregs78cam]

It should, we have one in a 1ton box van.

[1leg]

It should, we have one in a 1ton box van.

What bin might you have in that 1ton.

I saw this in the diagram before. but I figured all the smart guys on this board would have thought it out.

[EagleMark]

We did. Turbo 400 = 1227787. 700r4 = 1227747. Ha! You have any idea how many times I have used this diagram and never got down to bottom to see Turbo 400? I just happened to spot it today looking for wiring diagram for fasteddi soliniod, he was hooking it to ground and I swore it needed to be hooked to power as the ECM was ground...

I really don't think you need a one ton or turbo 400 specific bin, just have to figure out how to adjust TCC ground in XDF! But there are van 5.0 and 5.7L 3 speed bins in the ECM information thread. But I don't remeber anything in XDF for it, going to look now...

[EagleMark]

I'll take that back! I compared a 3 speed van bin to my ASDU 700r4 TCC bin and there are a lot of changes when you look at the XDF for TCC! One thing I noticed outside tranny controls is the Van 3 speed bin was set RPM for open loop idle, I didn't like that?

The $42 XDF was written for 700R4 and never took into consideration turbo 400. There is a bit for manual...

[1leg]

I have been driving the suburban all week, The off idle stumble is a pita. I have done a few tweeks to the VE to try and make some improvements but nothing has really helped. I switched to the to AHWZ bin for a 88 5.7 3speed application and it seemed to improve it a little. I have been looking thru the bins with compare and having a hard time find anything that is really different.

Where/what should i be adjusting for a off idle stumble? it's stumbles in drive or park, but in park its really bad. And i know it really rich at idle.
With the 8747 it idled really low but never stumbled.

[EagleMark]

That is usually an AE adjustment. But before I would do anything there I would know fuel pressure is 13PSI.

Also do a compare of your bin to ASDU and in tables there are four settings for Open Loop Closed Loop. Copy all them from ASDU to your bin and you will have closed loop idle like you did on your 8747! Might just go away...

[1leg]

That is usually an AE adjustment. But before I would do anything there I would know fuel pressure is 13PSI.

Also do a compare of your bin to ASDU and in tables there are four settings for Open Loop Closed Loop. Copy all them from ASDU to your bin and you will have closed loop idle like you did on your 8747! Might just go away...

I'll be doing all the system check this weekend. I also burned a chip with the changes you suggested. test it tomorrow.

[EagleMark]

And i know it really rich at idle.Just caught this from above, then reading your last post. If it is really rich at idle which is open loop in that bin, then accelerate the RPM reach closed loop and there's going to be a drastic change! Possibly your stumble!

But now you will have closed loop idle, and if not to rich O2 will stay hot enough to give BLM readings to tune Idle VE cells!

[1leg]

using the AHWZ bin as a starting point did the IAC reset and updated the 4 open/closed loop setting to the same as the ASDU. Suburban runs much better still has a little stumble but i would say its about 90% better, at least its drive able. Still has BLMs in the 119-121 range at idle. IAC seems to go wacky sometime, goes really low when i go from park to drive. I wasn't able to duplicate the problem consistently to get a handle on what might be causing it

Still takes a long time to get in to closed loop so i checked the BLM history, still way rich at idle. making some changes to ve in the idle cells.
Questions
Going down in the VE cell = leaner RIGHT?
How much would you change if you had 119 BLM in a cell and the cell has 19.50 in it?(just want to see how much i can change in one step)
Would a heated O2 sensor be better? this truck has a custom exhaust system O2 sensor is in the stock location in the merge collector but moved about 6-12" away from the engine compared to were it was before, I also have shorty headers.
Would it be better to move the O2 into one of single down pipes?
Should the O2 stay consistent when at cruse speeds? My o2 voltage will drop suddenly from above 400 then go to 50 or 60 even with the steady 2500-2800 rpm.

Thanks everyone for the help. Its great to see the changes making improvements. finally heading in the right direction.:jfj:

[gregs78cam]

I am sure someone more knowledgeable than I will chime in soon but these are my thoughts.


Questions
Going down in the VE cell = leaner RIGHT? Yes
How much would you change if you had 119 BLM in a cell and the cell has 19.50 in it?(just want to see how much i can change in one step) Calculated value should be 18.12, I would go with somewhere around 18.25 and sneak up on the right number
Would a heated O2 sensor be better? this truck has a custom exhaust system O2 sensor is in the stock location in the merge collector but moved about 6-12" away from the engine compared to were it was before, I also have shorty headers. Anytime you add headers always go with a heated O2, just my thinking though.
Would it be better to move the O2 into one of single down pipes? I think really only if you put a bung in both and then check the other bank after you think the tune is satisfactory
Should the O2 stay consistent when at cruse speeds? My o2 voltage will drop suddenly from above 400 then go to 50 or 60 even with the steady 2500-2800 rpm. As long as it is moving across stoich that is good. A reading of .050 could just be timing of the data point picking up the extreme peak of the swing, I like to watch the O2 cross counts and make sure they accumulate quickly.

Thanks everyone for the help. Its great to see the changes making improvements. finally heading in the right direction.:jfj:

[1leg]

Thanks Greg.

That way exactly the same way i was thinking. just want to confirm that i wasn't doing something wrong. I might have to take it to the exhaust shop this week and have him add a couple of O2 bungs to my down pipes.

[EagleMark]

With headers and your non heated O2 sensor that far back at highway speed it sounds like it's cooling off going open loop. Run your data log in TP and look at Item list for O2 ready and closed loop when this is happening. Or post up your data log!

[1leg]

With headers and your non heated O2 sensor that far back at highway speed it sounds like it's cooling off going open loop. Run your data log in TP and look at Item list for O2 ready and closed loop when this is happening. Or post up your data log!

It was going open with the bin you gave me but with the AHWZ bin, it is not doing it. I think i will install a heat 02. I made some tweeks to the VE in the idle cells and got them to around 126-127. And went into closed a little faster but not until you drive it for a little bit. it doesn't just idling or reving the engine in park. this is right after you start it, even when warmed up.

[gregs78cam]

Yup, I just got the WBO2 swapped to the other pipe, and a NBO2 put back in, and at an idle it goes back and forth from open to closed. I knew that I would have to put a heated one in from the begining, but just wanted to datalog the difference between real NBO2, and simulated. Now I just have to mount a relay.

[EagleMark]

It was going open with the bin you gave me but with the AHWZ bin, it is not doing it. I think i will install a heat 02. I made some tweeks to the VE in the idle cells and got them to around 126-127. And went into closed a little faster but not until you drive it for a little bit. it doesn't just idling or reving the engine in park. this is right after you start it, even when warmed up.There may be another parameter to adjust for closed loop idle? Like speed? But where your O2 is I think it's not hot enough. Does O2 ready say ready? Your old data log from 1228747 did the same thing! Stayed open loop till you started driving then went closed loop and stayed in closed loop for a little bit when at idle in park, then cooled off and went open loop. So it's back to O2 sensor placement getting to cool...

[1leg]

Oh Boy, she is starting to run good. I have been doing some freeway logs and using the excel spread sheet to make correction. Ill attach the latest log below from this mornings run. It was running so good i went ahead and did a hill climb to get some data from other cells. It has only took about 4 logs 2 idle/off idle and 2 freeway logs to get to this point. After todays log she should be running great. Still have a very slight stumble off idle and i'm going to bump the idle up another 25 rpm. Still need to work on the temp being off. Tried to buy a new plug but the store didn't have one. Got a heated o2 for a 93 s10 to hook later today. that should also help.

Question?
At one point when climbing the hill i was at a stead climb then all of a sudden the truck seemed to accelerate faster like it all of sudden picked up 50 more hp or something. I was driving and did see what was happening in the computer. What do you think this was? it wasn't the trans kicking down. could this be the PE?

[1leg]

if you look close when i was accelerating with more the 70% throttle the TCC goes into locked mode. look around 6:33 and 17:39. it might just be a wiring thing. The trans shows its in low also. I believe that the trans was in second gear already in both cases. i was climbing a hill in both cases.

[EagleMark]

Sounds like you hit PE. You don't want to use PE BLM readings when adjusting tables. The ADX is also not built for Turbo 400 it was built for 700R4? That I can take a look at.

[EagleMark]

I can't find any ALDL file for van with turbo 400 and 1227747?

When you saw the TCC light come on that should be your Kickdown working. That is what the wiring diagram is showing and what the changes are in bin between 3 speed and 700R4. You can just edit that to change name. You do not have high gear because it's not 700R4 overdrive so it should never go high gear?

[1leg]

I didn't want to shut PE off during tuning until I got things a little closer. I was running so lean on the freeway that i was scared to turn PE off. I'm going to do 1 more log latter to confirm that i'm a little closer. I can't tune realtime yet, i don't want to pull over on the freeway just to burn a chip AGAIN:nono:

[1leg]

kick down works just not on the freeway, might need to adj something but it does around tow from around 35-45.

[1leg]

A compare my current bin(AHWZ) to the ASDU. On the 3speed biin every thing is maxed out except for the TCC-COAST vs TPS is set to 5.20%

See screen capture

[EagleMark]

It's really strange there are bins for this but no ALDL.ds file? Although who knows where the list of files came from there are a few marked ***** DELETED****** and A108 is not even listed. So I guess best we can do is reword the TCC because it uses same A7 wire from ECM... Does it show engaged when kickdown is active?

[1leg]

It say LOCKED when its kicks down on the log. I'm not really watching the computer when i'm driving. The cop here in socal look for people looking down when driving, I don't need any tickets.

[EagleMark]

In XDF I changed name from TCC Control to Turbo 400 and deleted the parameters that were 0 or maxed but left the others with values with Turbo 400 = Old TCC Name.


I also changed the TCC lock name in ADX to Kick Down and now will say OK or Kick Down in red. So now we have a $42-1227747 Turbo 400 XDF and ADX for TunerPro.

[gregs78cam]

Another option, would be to make another sub-section in the original .xdf that is just for the TH400, and reference the same locations with different names. That way one .xdf works for both applications. You can also do the same thing with the .adx. OH THE AWESOMENESS that is Tunerpro!

[EagleMark]

That would have worked too... :mad1:

But it was easy enough to do that and add a T on file name. They are also in the ECM information thread.

[1leg]

What is the best way to disable PE.

And thanks guys for the work on the xdf and adx.

[gregs78cam]

Normally setting TPS% to 100% should work but a sure fire way is set Min Temp to 255 @ L4912

[1leg]

I'm back, been busy moving and a few other things, but now i have some time to get back to tuning. I manged to get the
mechanical temperature gauge hooked up so i can verifiy that the computer is reading accurate. I need to get out and drive to confirm but so far it looks accurate. I manged to find another 8747 as a back up. I'm going to leave this one untouched and keep in the truck just incase. I also found a 91 suburban 350/4l80 computer. Paid way to much for them. $65 each.