Questions and Answers

Oldsmobile 98 No Check Engine Light Q. Yes Sir, I have a 1985 Oldsmobile 98. 3-8 liter V-6. The car has been sitting up for 8 years and only has 100,000 miles on it. I recently decided to get it going. It would't start so I put a new fuel pump on it and pulled the fuel rail off and cleaned the injectors. And of course a fuel filter and a tune up. Starting the car in the morning it takes about three times for it to catch up.

You can drive the car two or three times and it runs great. Then, say, the fourth time it wants to not take the gas like its starving and then it will act okay for the next three or four times.

I know the IAC motor is not testing right and the idle is a little high, but I also think it's something else also. When I put the scanner on it I noticed that the PROM reading keeps going constantly from one PROM number to another constantly and the computer reading are going haywire.

Also in this list of problems if it helps is when you turn the key on the only dash information that lights up is the amps gauge, no other bulbs light up no Check Engine Light, no nothing but the amps light. I'm thinking that maybe the computer is bad but I didn't want to get one and that not fix it.

If by chance it's the computer can I just get the computer or is there a chip that I also have to get for it or does it come with the computer? I'm not sure since this is my first replacement of a computer.

Thank you for your time on listening to my problem.

A. Sounds like a bad ECM (computer). Most times when the Check Engine Light won't come on a key on, engine off, the ECM is not getting power, blown ECM fuse, or the ECM is bad.