I'm getting the same thing here with my 95 4 door. 600-1500, up and down, up and down. No particular time of the day or reason. It starts, then stops.
I had my wife in the car when it started one time - she started giving me these looks. I had to go through this little "It's not ME, the car is doing it - all by itself...". She didn't believe, so I took my left foot off the gas and showed her. "See, the car is doing this, all by itself".
My guess is it is electrics. Some sensor telling the computer wrong data.
Originally Posted by mrroboto89
Hi. I have a 97 escort with a manual transmission. Today while I was driving home and was stopped the idle rpms were moving up and down from about 500 to 1500. It did it at a couple of other stops and to keep the car from dying I had to keep my foot on the gas. I just had an oil change a few days ago and the air filter was replaced. Im really not sure what to do about it. Any help?