I thought it may be pinging. I just filled the tank with 87 octane, so it may be difficult to fix that issue.
The engine isn't overheating. The temp gauge is working properly with a new sensor. The radiator fan is working properly with a new sensor.
There is no knock sensor. The engine has a traditional mechanical distributor setup. I triple checked the ignition timing. I haven't been able to get the idle down to the factory 750rpm. The best I can do is 1,000rpm. I did install new NGK plugs and Autozone wires.
This car has Federal emissions (for 1993) and therefore, no EGR system.
BTW: at idle, the engine is as smooth as it can be. I can hardly hear the engine running at stop lights.
I was wondering if I had a transmission problem.
Tuesday, September 21st, 2010 AT 9:25 PM