can this be a pcm issue?
Thread Starter
Teching In
Joined: Apr 2004
Posts: 22
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From: Clovis, New Mexico
can this be a pcm issue? I have a 98 TA with an LS1 that has developed a serious problem. One morning it just would not start. After having a new pump put in the car due to no fuel pressure, It STILL has no fuel pressure. Me and a friend started doing some checking, and when you hotwire the pump at the relay, it builds pressure, so the pump is in and working properly. The injectors on the car are NOT clicking, so it seems the PCM is not sending the proper pulse to open them.
What would cause the car to have no pressure unless hotwired, and have no injector pulses? Possibly a bad PCM?
Thanks for your help.
What would cause the car to have no pressure unless hotwired, and have no injector pulses? Possibly a bad PCM?
Thanks for your help.
Thread Starter
Teching In
Joined: Apr 2004
Posts: 22
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From: Clovis, New Mexico
Originally Posted by crainholio
VATS failure may be the cause. Whip out your code scanner and see if any error codes are stored.
Also check the fuse panel, each and every fuse pull & inspect.
Also check the fuse panel, each and every fuse pull & inspect.
Checked the vats........ will not let it crank at all, when the vats is disconected. checked all fuses....all good
Thread Starter
Teching In
Joined: Apr 2004
Posts: 22
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From: Clovis, New Mexico
Originally Posted by crainholio
Whip out your scanner, check for codes, then watch the RPM indicator while cranking. Should increment revolutions while the starter is spinning the engine.
Originally Posted by SloZ06
checked with autotap and got P0601 trouble code! Bad computer? could programming fix?
DTC P0601 Control Module Read Only Memory (ROM)
This sounds like a hardware issue, if so it's replacement PCM time.
