not responding to changes

[MEAN LT1]

Me and a friend of mine put in a cam and rockers on a 96 T/A. He diecided to keep all the emissions for now until he could afford some long tubes(backwords I know). Anyway, the car starts and drives fine but I wanted to lower the idle. I load it up and th car still idles at like 900RPM. I datalogged it and the pcm is cammanding 900 all the time. I even tried going back in T/C and dropping t down to 600 and it still doesnt respond?. Ive never had a car not respond to the commands im giving it. Anybody have experience with this?

Also. The car is a obd1 swap, the pcm worked great in my car before I put it in his.

[Fastbird]

Some things come to mind. You're commanding the idle to 600, but where's the TPS and what's the IAC doing during this would be my first and foremost questions.

[Z28pr0jekt]

Some things come to mind. You're commanding the idle to 600, but where's the TPS and what's the IAC doing during this would be my first and foremost questions.

That's an important point but he said reading the PCM its still only commanding it to 900.. if you set it to 850 the computer should command 850 (doesn't mean that will happen but it should show up on the datalog as that is what the comp is TRYING to get to)

I know when I tried to set mine below 825 it just didn't want to go but it still read as trying to get to whatever I was trying to set it at

[Fastbird]

That's an important point but he said reading the PCM its still only commanding it to 900.. if you set it to 850 the computer should command 850 (doesn't mean that will happen but it should show up on the datalog as that is what the comp is TRYING to get to)

I know when I tried to set mine below 825 it just didn't want to go but it still read as trying to get to whatever I was trying to set it at

I think he said he went in and set it lower but it didn't respond. Sounds to me like a wide open IAC, mis-set TPS, and/or moderate vacuum leak. It's amazing how much a slightly mis-set throttle body can toss off your idle.

[MEAN LT1]

I just went through my datalog and everything looks good. IAc ranges from 57-61 steps, throttle position indicates %0.0 and volt wise its at 0.61.

[edcmat-l1]

Can you post up a tune on here? And a data log too if you can. What are you using to log?

[Fastbird]

I just went through my datalog and everything looks good. IAc ranges from 57-61 steps, throttle position indicates %0.0 and volt wise its at 0.61.

Well.....so much for my theory.:shiner:

[MEAN LT1]

Can you post up a tune on here? And a data log too if you can. What are you using to log?

Im suing datamaster to log. I tried putting the files on the site but it doesnt like the .bin file from tunercat or the from datamaster. I can send the files to your email if you like.

[MEAN LT1]

So I have figured it out....I think. It appears the vehicle thinks its a auto. So I decided to go in and lower the idle in drive instead of park/neutral. Mind you the car is a factory m6 car, so I change the idle settings in drive to 750rpm and what the hell, the damn thing responded. The PCM I swapped into the car came out of a a4 car but the bin file I flashed came from an m6. Could there be a setting I missed that will make it still think its an a4 vehicle?

[edcmat-l1]

So I have figured it out....I think. It appears the vehicle thinks its a auto. So I decided to go in and lower the idle in drive instead of park/neutral. Mind you the car is a factory m6 car, so I change the idle settings in drive to 750rpm and what the hell, the damn thing responded. The PCM I swapped into the car came out of a a4 car but the bin file I flashed came from an m6. Could there be a setting I missed that will make it still think its an a4 vehicle?

Should be in the constants. Down at the bottom of the list, should be a choice on trannys.
Of course that's just off the top of my head, not knowing exactly what car/tune, etc.