all except for the engine itself. i have a 91 Cherokee with a 92 motor... there are maybe 1 or 2 wires from the harness that don't go to anything at all! they don't affect anything except to cause a...
Correct low idle speed should be in the neighborhood of 750-800 rpms. A bit higher when the engine is cold is acceptable. Anything higher, above 1000 rpm probably indicates an issue that needs to be...