1995 Geo Prizm engine idle and low RPM cutout

Hello,

I cleaned the throttle body and IAC. The throttle body and IAC were'nt very dirty. The IAC was'nt clogged at all, just a little bit of black soot-looking dirt that came right off with some carb cleaner and a rag. I also replaced the 2 water hoses and the vaccum line that goes to the IAC. Problem still remains unchanged. Spark plug wires have about 14,000 miles on them. Going to get new ones in the morning. Spark plugs themselves are brand new. (NGK Platinum) Still no tach. I must also add that the problem is'nt occuring until engine is warmed up. Thanks for the reply.

Thanks for the information. New wires had no positive effect. I do have a couple of questions about the ignition timing and valve clearances. As for the ignition timing. Can that be changed by moving the distributor like the old days or is that controlled by the ECM? I'm not exactly sure what you are refering to with the valve clearances. Can you elaborate a little more?

Hello. Thank You for your information and time. I am happy with your answers. My vehicle has been repaired. Although it was somethng that would have been difficult to diagnose without actually being present to see what was happening. What had to be replaced was the ignition coil. That solved the cutting out at low rpm "bucking" issue and was partly to blame for the low idling thing. The other part was a short in the signal wire for the tps causing a check engine light to flash and giving a code for a map sensor. That was found by accident upon just moving the wires around while having the scanner hooked up and everything being good 1 second and not the next. Anyway, like I said before, thank you for your time and answers. You may keep the small donation.