I have a 1992 Pontiac Grand Am (SE) with a V6 engine and Auto transmission. A couple of days ago the speedometer sensor started going out on me--speedometer doesn't work at times; Check Engine light comes on; car runs rough, and sometimes at high idle; stalls out; and the air conditioner doesn't cool. All this happens at about the same time, then suddenly everything starts working (for a while), and then it starts acting up again just as suddenly.
I don't mind replacing the sensor myself, but I can't find out where it's located. I can find all sorts of information on 'speedometer sensors' on the internet except where it is located on this particular make and model car. If anybody can help me out I'd be gratefull.