Car will revs up and down at 2000 rpm in P or neutral

Car will revs up and down at 2000 rpm in P or neutral 1 answer

rev up and down in park 6 answers

When I put it in park after driving it it revs up 2000 psi's and down and up Do you know what causes this?

No speedo,check engine light,revs up and down 2 answers

When first taking off,car will lightly rev up and down when letting out of the gas. After driving for a few miles check engine light will pop on then about 10 to 15 mins later the speedo starts work...

Why is my idle running high(about 1500 rpm) and sometimes it goes up and down ? 10 answers

Is it expensive to fix ? Also, sometimes I have to gun the gas to bring down the idle and than it goes up than down. Thanks.

Car doesn't seem to ne getting fuel when starting. The starter turns over and have plenty of power getting to the car.. If I pump the gas pedal or hold it down when I try to start it, will start 3 answers

Once it is running it is almost like its choking out and the check engine light will flash for a bit then the car runs OK... Any ideas?