Answer this PCM question for me......confused....
09-18-2005, 04:33 PM
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Answer this PCM question for me......confused.... I've been having major overheating troubles due to something going on when I turn my A/C on...but thats another issue.
Every time the temps go way up from the overheating my engine would detonate like a JOKE. All of sudden yesterday, the overheating happened again like it always has but I had absolutely no detonation. I pulled over and popped the hood and made sure it was actually hot as hell and it was, just like always. But no detonation.
Question is:
Can a PCM finally realize the problem and pull timing to stop the detonation?
Every time the temps go way up from the overheating my engine would detonate like a JOKE. All of sudden yesterday, the overheating happened again like it always has but I had absolutely no detonation. I pulled over and popped the hood and made sure it was actually hot as hell and it was, just like always. But no detonation.
Question is:
Can a PCM finally realize the problem and pull timing to stop the detonation?
Last edited by Quickin; 09-24-2005 at 06:49 PM.
09-18-2005, 05:37 PM
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Originally Posted by Black02SS
The PCM doesn't "realize" a problem so to speak. It can pull timing based on IAT's and ECT. If the car was programed to reduce timing at a set IAT, then it will. It has some pulled from the factory already.
09-18-2005, 06:17 PM
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Originally Posted by 2001NBMZ28
Yes, that's the ECT sensor - PN 15326388, about $25 at the dealer.
Does it show an SES code?
Last edited by Quickin; 09-18-2005 at 06:30 PM.