1990 sentra drives fine,no hessitation at all.At idle rpm's are near very low almost to a stall.Here's the funny thing.When i turn the air,the computer compensates for the compressor and it idles normal????ANY IDEAS????:eek7:CAR IS 93000 MILE GENIE!!!!

reset the idle. the proper procedure is probably in a FAQ some where here, or theres a couple other people who know how.

iff you idle it up when air is off it might go to a higher...should be ajustment right where cable goes should be a screw right there unless it's factory setting..good luck.

older nissans had an ecu relearn process involved with resetting the idle. id suggest a bit of research.