crankshaft position sensor

[bobb1589]

OK. I have an OBD1 Trouble Code 36 (24X Signal Circuit Error) - Faulty Circuit error from coil packs to module. The manual says to test the coils and ignition module. They say before i check the manual i should check the Crankshaft position sensors functionality. Here are the symptoms.

I will go out and start the car from a cold start. I will drive it around for a little and then go into a store or something and come out to start it and it cranks but wont start. Eventually I can get it to start. So my guess is that the CPS is heating up and not functioning correctly. Does this sound right?

Car is a 1995 3.4 V6. I have been reading around about the Distributor-Less Ignition System. My understanding is that the CPS sends a signal to the ignition module which adjusts the timing, etc. Is this correct? So if the CPS was bad it would cause a problem like this? My idle is pretty rough and the car is running rich.

[JSPERFORMANCE]

sounds like you are on the right track, either that or the module itself..

[bobb1589]

i would hope its not the module they are much more expensive

[Tru2Chevy]

When the CPS died on my 3.1 v6 the car wouldn't start at all.

- Justin

[bobb1589]

well i am almost positive this is the problem... i just recalled that less than a year ago it was replaced for the code 36 and the car was still running then... it is still running now but throwing code 36 again. i am going to call the mechanic who put it in and see if there is any type of warranty on it

[bobb1589]

somehow it was the EGR that was bad... replaced it and the car runs better than it ever has