engine revs up and down
same thing happened to me and i just left it...my car kept overheating so i checked the radiator and it was bone dry...put sum liquids in it and it helped a little but then 3 weeks later my distributer went out....got it reaplaced and no more reving up and down
It sounds like it could be the fast idle thermo valve. Take off the pipe that runs from the throttle housing to the air cleaner, you should see 2 holes just before the butterfly, cover up the bottom hole with your finger and see what happens if idle settles down then you need to take off the FITV and clean it (its located at the bottom of the throttle housing).


