Need compatible cable or device for TunerPro

[ralmo94]

Here are some notes of codes that seem relevant Compared to a stock 2001 Z28

CAI or IAT modification, was stock IAT in Maf and removed?
P0111 Intake Air Temperature Circuit Range/Performance Problem

DBW or DBC ?
p0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
p0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input
p0123 Throttle/Pedal Position Sensor/Switch A Circuit High Input

Engine Temp in Logs?
p0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
p0128 Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
p0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
p0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
p0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
p0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
p0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
p0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
p0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
p0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
p0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
p0151 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
p0152 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
p0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
p0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
p0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
p0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
p0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
p0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
p0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
p0171 System Too Lean (Bank 1)
p0172 System Too Rich (Bank 1)
p0174 System Too Lean (Bank 2)
p0175 System Too Rich (Bank 2)

? Disabled by mistake? IDK
p0200 Injector Circuit Malfunction

p1133 HO2S Insufficient Switching Sensor 1
p1134 HO2S Transition Time Ratio Sensor 1
p1153 Bank 2 Fuel Control Shifted Lean
p1154 Bank 2 Fuel Control Shifted Rich

[Dukenukemx]

Does it have any codes?
If the codes are disabled resetting won't turn them on.
They can be set also so they still report but keep the light out. I might look a little closer at that part of your bin.
If you log O2 voltage it would give an idea of how far off the fueling is, and at this point it is the only data we have to go off of.

I had put a stage 2 cam with long tube headers and ported and polished 241 heads. Couldn't drive it without it stalling out. Had to tow it to Corvettes of Westchester to tune it. It did have some codes that he told me he just turned off to prevent a light. In the bin file I can see a lot of them have been turned off. That's why I'm wondering if that's the reason why no trim is reported?

If you have a wide band that could be used, I didn't notice you answer if you had one or not, so I'm assuming you don't?

Nope, not yet. Something I was going to worry about after I get this tuned somewhat properly.

[ralmo94]

A question still unanswered is if it is reporting a Intake Air Temp? if not, could be the issue? If it is, Log the temp

[Dukenukemx]

A question still unanswered is if it is reporting a Intake Air Temp? if not, could be the issue? If it is, Log the temp

Did a log with o2 sensors and intake temp. Not sure if it worked and didn't get a good long drive but I did get it up to temp. Gonna take the Vette for a very long drive tomorrow so debating if I should log the entire time.

[Dukenukemx]

So I tried looking at trimalyzer and this is what I see. Not sure if that means I didn't log enough or that 0% is good? Not sure if I'm doing this right.

[ralmo94]

So I tried looking at trimalyzer and this is what I see. Not sure if that means I didn't log enough or that 0% is good? Not sure if I'm doing this right.

on the main input, Trim bank A and B is ment to be Long term fuel trims, INT bank A and B is ment to be sort term.
if choosing o2 voltages, should choose A and B trim bank, and on INT A and B should be set to none, and trim input type should be changed to arbitrary value and because map is in psi, it needs to be converted into kpa, that needs to be done in spread sheet software and saved, I can do that for you, see if your app can log it in KPA?

Gonna take the Vette for a very long drive tomorrow so debating if I should log the entire time

I would, it doesn't cost any more than just deiving. Log as many thing engine related as you can

[ralmo94]

So I made the conversion, while looking at the log in csv, I noticed there is no reading on the bank 1 O2's?

Also no throttle position data, maybe its on a different channel?

Here is the graph with O2 voltage from bank 2, looks pretty rich.
trimalyzer_Zdt8cGCQTT.png
I wonder why closed loop won't work.

When you connect to the car, can you check to see that the channels you are logging are reporting data?

[steveo]

logging narrowband o2 voltages doesn't tell you anything.

trimalyzer is designed to analyze your fuel trims

fuel trims are a result of closed loop operation

the average of your o2 data vs rpm vs map is pretty much useless information

if you are not in closed loop trimalyzer will not help you (unless you know how to abuse it for a different purpose, which you don't really)

trimalyzer does a few things well but it is not a log viewer

you should use a tool that'll graph your logs so you can see what's going on and why you aren't entering closed loop

is your coolant temp too low? does your o2 never warm up? are you throwing codes that prevent closed loop operation?

[ralmo94]

I found 2 things that I think may be suspect comparing to a stock truck tune, maybe others can comment
UniversalPatcher_J7a7oMRlJW.png Description is
Airfuel closed loop mode is entered when oxygen sensors become ready, this calibration is set, and closed loop coditions are not met, otherwise remain in afterstart mode.,
Truck tune has it checked,
UniversalPatcher_QUVhN8MkNK.jpg
Truck tune allows 2 times the out of threshold counts to be ready.

I changed those two items to match the truck tune, if you want to give it a shot.

Maybe some one could comment on if those two things would keep you out of closed loop,
Maybe its the missing o2 data on Bank 1, Is the sensor connected?

[ralmo94]

logging narrowband o2 voltages doesn't tell you anything.

trimalyzer is designed to analyze your fuel trims

fuel trims are a result of closed loop operation

the average of your o2 data vs rpm vs map is pretty much useless information

if you are not in closed loop trimalyzer will not help you (unless you know how to abuse it for a different purpose, which you don't really)

trimalyzer does a few things well but it is not a log viewer

you should use a tool that'll graph your logs so you can see what's going on and why you aren't entering closed loop

is your coolant temp too low? does your o2 never warm up? are you throwing codes that prevent closed loop operation?

I suggested he use it before I knew he didn't have any fuel trims. Trying to work with what he's got.
Average vlts at 900mv, seems rich, nothing to tune by, but valuable info I would say, showing cl and tuning maybe requird

[Dukenukemx]

I wonder why closed loop won't work.

When you connect to the car, can you check to see that the channels you are logging are reporting data?

I did check and there's nothing. Torque even has specific PID's for GM vehicles, which is neat as it reports even more data. One thing that crossed my mind is that maybe I didn't even write any changes to the PCM. I say this because I notice total lock up occurring only at 56+ Mph like Chucks did was setup for. Might be my perception so later today I will read the PCM and see if the changes were made. In PCM Hammer I wrote parameters only, and not sure if that's proper? I did unplug the battery half way on my trip to see if that was needed, but no change.

I also feel stupid not realizing that PCM Hammer comes with PCM logger, as I've been using PCM logger from the Microsoft store. I'll have to give it a try.

I found 2 things that I think may be suspect comparing to a stock truck tune, maybe others can comment
Description is
Airfuel closed loop mode is entered when oxygen sensors become ready, this calibration is set, and closed loop coditions are not met, otherwise remain in afterstart mode.,
Truck tune has it checked,

Truck tune allows 2 times the out of threshold counts to be ready.

I changed those two items to match the truck tune, if you want to give it a shot.

Maybe some one could comment on if those two things would keep you out of closed loop,
Maybe its the missing o2 data on Bank 1, Is the sensor connected?

Thanks I'll give it a try. One other thing I should note is Chuck put in a 160F thermostat while he was tuning. Not sure if that can have an effect on closed loop, but the O2 sensors do seem to come alive once warmed up?

[ralmo94]

Then I'm wondering if the o2's are connected in the correct plug of the harness, since bank 2 sensor 1 and sensor two are the only ones reporting data. Bank two should be drinkers side, sensor 1 should be the front sensor that trims the fuel. Sensor 2 is after the cat, and only used for cat efficiency monitors. If you have headers and deleted cats there should be data on bank 1 sensor 1, and bank 2 sensor 1.

I don't know if parameters only should be written or not. I seen earlier in the thread a. Mention of a custom OS,if that is loaded, you should probably write entire.

Thresholds are set low enough in the tune, 160 stat shouldn't keep it ol, while that is cold, I would recommend a 180 or so for a street driven car, but I'd be concerned with closed loop before I messed with that. JMHO. Definitely check O2 wiring

[Dukenukemx]

Then I'm wondering if the o2's are connected in the correct plug of the harness, since bank 2 sensor 1 and sensor two are the only ones reporting data. Bank two should be drinkers side, sensor 1 should be the front sensor that trims the fuel. Sensor 2 is after the cat, and only used for cat efficiency monitors. If you have headers and deleted cats there should be data on bank 1 sensor 1, and bank 2 sensor 1.

I don't know if parameters only should be written or not. I seen earlier in the thread a. Mention of a custom OS,if that is loaded, you should probably write entire.

Thresholds are set low enough in the tune, 160 stat shouldn't keep it ol, while that is cold, I would recommend a 180 or so for a street driven car, but I'd be concerned with closed loop before I messed with that. JMHO. Definitely check O2 wiring

I just read the PCM and no changes were made. It still disables TCC until 57 Mph and closed loop is still off. That explains a lot. I'm gonna go full PCM write @ralmo94's changes and see if closed loop and TCC comes back. I assumed parameters was enough, but I guess Chuck put in a custom OS? He did use HPTuners, so I don't know if that software does that?

[ralmo94]

If the o2's are connected in the wrong spot, programming won't change that. Need to confirm o2's on each bank. Fuel trims are bank system,

[Dukenukemx]

If the o2's are connected in the wrong spot, programming won't change that. Need to confirm o2's on each bank. Fuel trims are bank system,

I did put in long tube headers and now that I think about it I don't remember if I checked which side has which O2. I think I went but right wire right side and left wire left side. The good news is that full write did the trick, and now fuel trims are back on. The bad news is that it runs like crap. I went to log but was too afraid to drive it too far. I noticed that when I tried to give it a bit more gas the short term bank 1 trim just went to nothing until I released some of the pedal. Giving it more gas felt like I could damage something.

I'm still trying to learn how to use trimalyzer and I'm guessing this means I'm running REALLY lean?