matman88

So I just had my ignition replaced 3 months ago and my car has been running great until last night when I went to go start it in the rain the starter turned but the motor wouldn't start. I immediately thought it was another opti but i just replaced that not too long ago and when I hooked a plug up to the coil with a different type of plug wire I got nothing when I grounded it to the headers and had my girlfriend turn it. any easy way to check if it's the coil or ignition?
Also, giving it gas usually changes the speed the motor turns over at but it doesn't anymore. what are the chances it's an ECM('93)?

matman88

I just checked the codes and I got a 63-oxygen sensor right side circuit open or map sensor out of range. this shouldn't cause the car to not start at all should it?

matman88

this is probably a dumb question but does right side from where I sit or right side if I'm looking at the engine.

matman88

after doing some research I found that a bad opti can cause no spark from the coil too. I don't really understand how this is possible. does anyone know a good diagnostic procedure that will tell me if the problem is my computer, icm, coil opti or just an O2? this is driving me crazy... I hate electricity

Big Al

iTrader: (1)

The Opti provides two signals to the PCM, they have to be there. The right and left side are with you sitting in the driver's seat. The O2 sensor has nothing to do with it starting.

Al 95 Z28

matman88

does that still apply to the '93s ECM as opposed to a PCM?