PCM/ EPROM - All HIGH readings

[CA Cutlass Supreme]

F I X E D

It's a good thing i pulled the ICM / ECM fuses before hooking up the battery. I was gonna test the car and found that i left it in neutral with the key on!! (had to rotate the motor forward yet again to tighten the backside bolt of the smog pump).

I did the idle relearn for 10 minutes and drove it through Portland and Vancouver, no problems. Also, the LED instrument panel works as it should. I think the VSS was confusing the panel, now it works fine, no erratic blinking. Got mph, gas level, odometer.


whew! Nice to have a running car again.

Happy New Year!

[JohnDD]

So what was the problem?

[CA Cutlass Supreme]

Originally Posted by JohnDD

So what was the problem?

I think the start of the problem was a shorted VSS that was confusing my dash. Then i had bad wiring (shorted)/conduit to the 3X sensor and most likely a bad 3X crankshaft sensor. I also replaced the 24X sensor just on principle along with the ICM (my original was 14 years old), then finally a nice new goodyear belt tensioner and new serpentine and smog belts.

So a couple shorts and two bad sensors (3X and VSS)

[xeroinfinity]

Glad to hear you got it goin !!

It usualy is something silly simple, good job at stickin with it too.
Most would have scaped it or just set it on fire.

Happy New years !

[CA Cutlass Supreme]

Originally Posted by xeroinfinity

Glad to hear you got it goin !!

It usualy is something silly simple, good job at stickin with it too.
Most would have scaped it or just set it on fire.

Happy New years !

One thing though. If i just turn the key on w/o starting it, the check engine light stays on. Once i start it, it goes away. Is this normal? I tried using the special GM key (short a/b) to read codes, but i just hear this weird sound and quit that quicklike.

[ecartman]

Originally Posted by CA Cutlass Supreme

One thing though. If i just turn the key on w/o starting it, the check engine light stays on. Once i start it, it goes away. Is this normal? I tried using the special GM key (short a/b) to read codes, but i just hear this weird sound and quit that quicklike.

As long as the light goes out when the engine is started, it is fine.

[CA Cutlass Supreme]

Originally Posted by ecartman

As long as the light goes out when the engine is started, it is fine.

Thank you!