My mother 1990 Lumina Sedan suddenly refused to start the after she had ridden it the day before without any issues for years. Last time it had a problem was when it suddenly died about 12 years ago and I believe the mechanic said it was the CPS (Crankshaft Pos Sensor). If I remember right he said he bypassed it so that it would never cause any future issues. And whatever he did worked well for years, I have a few questions, is bypassing the CPS possible? After trouble shooting this car now for the last 10 days, we eliminated fuses and such and to me it looked like it could be possibly the Ignition Control Module (ICM) or the Electronic Control Module (ECM/PCM). Took it in to a garage and after their analysis they said it was probably all 3. I said that's impossible for all 3 to die at the same time. So they convince me to replace the least expensive part, the CPS. If fact they said there are 2 CPS's in the Lumina one in the Oil Pan and one outside (I don't believe there is 2). Anyway silly me agreed to let them change the outside one which is the only one I am aware of. Needless to say once replaced the car still didnot start (still has no Spark at the coming of the Spark plugs). So now they thinking to replace the IGM, then next possibly the ECM. I am reluctant to give them the ok to replaced these in fear that the bill mounting up and there's no guarantee that after all 3 parts are replaced that the car will start. My initial thoughts was that the ICM had gone, only wished that they had started there first. Any opinions?
Thursday, November 22nd, 2012 AT 6:57 PM