I have a problem maybe you guys can help me out. I am throwing a CEL for my o2 sensor, so i replaced it and reset the ecu and still throwing it. Besides that problem, my car is idling high. When i start it, it idles at 1000rpm or so, but when it reaches opeating temperature it idles at 1700, any idea what this can be? Thanks in advanceI

 

What year is the car? If it's 96+ are you sure you replaced the bad O2 sensor?

As for the idle, check for vacuum leaks.

 

its obd1 and i replaced it myself. Thanks ill check vaccumm leaks

 

It was a vaccum leak in the manifold thanks