is pcm going?
10-20-2007, 09:27 PM
#1
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is pcm going? Following tunewith 98 z, bank 2 read -100.0. Tuner claimed pcm going as it could not be reset even though back cats tuned out and both front cats new
and engine just rebuilt. Is this possible???? Upon closer pcm inspection, unit is old and has been rebuilt??? No leaks on engine.
and engine just rebuilt. Is this possible???? Upon closer pcm inspection, unit is old and has been rebuilt??? No leaks on engine.
10-20-2007, 09:50 PM
#3
Following tunewith 98 z, bank 2 read -100.0. Tuner claimed pcm going as it could not be reset even though back cats tuned out and both front cats new
and engine just rebuilt. Is this possible???? Upon closer pcm inspection, unit is old and has been rebuilt??? No leaks on engine.
and engine just rebuilt. Is this possible???? Upon closer pcm inspection, unit is old and has been rebuilt??? No leaks on engine.
10-20-2007, 09:57 PM
#4
Its a STRONG possibility which is why I'd have a different reputable tuner look it over 
But basically what Ed is saying is 98's have the ability to only scan 24 bytes of info so if the person who was scanning your car with say a config from a 99+ theres a good chance 50/50 that he was logging more than 24 bytes of info which in turn our software will start dropping PID's to get it down to the correct amount of bytes of data...it usually starts with the fuel trims and then onto the others until its down to 24 bytes of data.
But basically what Ed is saying is 98's have the ability to only scan 24 bytes of info so if the person who was scanning your car with say a config from a 99+ theres a good chance 50/50 that he was logging more than 24 bytes of info which in turn our software will start dropping PID's to get it down to the correct amount of bytes of data...it usually starts with the fuel trims and then onto the others until its down to 24 bytes of data.
10-21-2007, 08:25 AM
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Well, this all began in an effort to get the car passed NC state inspection. I kept getting p0171 codes, bank 1. SO I was getting heads/cam installed and this problem followed the car through to the tuning. THe tuner, CAM, claimed that bank 2 read -100.0 percent.
SO he tuned the car anyhow. But three non-ready codes rom the PCM still existed.
SO, I drive the car all over from cold startup, go to the inspector's and they claim it's not ready to be inspected. THe tuner tuned out the back cats and I haven't had any more
codes thrown( ex P0171) but it still won't pass the inspection even though it makes 400
RWHp on the dyno. WHat should/would you guys do/or go from here???Neeed help....
SO he tuned the car anyhow. But three non-ready codes rom the PCM still existed.
SO, I drive the car all over from cold startup, go to the inspector's and they claim it's not ready to be inspected. THe tuner tuned out the back cats and I haven't had any more
codes thrown( ex P0171) but it still won't pass the inspection even though it makes 400
RWHp on the dyno. WHat should/would you guys do/or go from here???Neeed help....
