Originally Posted by
ecenterprise
I have an automatic. not sure what module was replace. It just turn over. The car is in the shop now for 2 weeks and nothing yet. they want to put a PCM in.. Need help plz
Here is some help for you - get the car out of there.
While PTCMs can fail, in 6 years and 80,000 miles of owning three Crossfires, and spending all this time on this forum, I think I can remember ONE PTCM that failed.
If the car spins over with the starter, we must determine if we have spark and at least 50 pounds of fuel pressure BEFORE we go anywhere else. Common "it turns over but won't start" causes:
1) Bad Crank sensor
2) Bad Cam sensor (kinda rare but it does fail)
3) Bad battery - (yes, it may spin the engine but not start the engine, odd I know, but I've seen it several times)
4) No fuel pressure (bad fuel pump relay, fractured solder on the Relay control module - both can be fixed with a new RCM for about $129)
5) Low fuel pressure (due to screwed up fuel pump or fuel filter/regulator)
Notice that ANY of these can fail and only 1) or 2) will throw a code and light the Check Engine light - and often, they fail and even THEY don't light the light - this, I think, leads many desparate techs to toss expensive modules at the problem. THey've already tossed one module at it and that didn't work, did it?