revs go up and down when in park

Discussion in 'General Motoring' started by pixielee, Jan 26, 2007.

  1. pixielee

    pixielee Guest

    i have a 93 honda prelude auto and when it is in park the revs go up and
    down does anyone know why it would do this. it doesnt happen with
    anything else.
     
    pixielee, Jan 26, 2007
    #1
  2. pixielee

    MishaA Guest

    could be fast idle valve, could be eacv, could be lack of coolant, and
    could be your tranny...
     
    MishaA, Jan 26, 2007
    #2
  3. pixielee

    Elmo P. Shagnasty Guest

    This happened on my 02 Odyssey; the idle air control valve went bad.
     
    Elmo P. Shagnasty, Jan 26, 2007
    #3
  4. pixielee

    jim beam Guest

    check coolant level inside radiator is full to the top and that all air
    is purged from the system.
     
    jim beam, Jan 27, 2007
    #4
  5. pixielee

    chicago Guest

    I had that happening to me on neutral during cold weather, I was told by a
    trustable mechanic it was not a big deal and I never did anything about it,
    still running great, although I didnT face extreme cold really lately.
     
    chicago, Jan 28, 2007
    #5
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads

  1. '86 Prelude revs climb when releasing gas...

  2. 1999 Accord V6 - typical revs and gas mileage

  3. my 98 honda civic idles up and down when warm

  4. Up and down idle when weather is cold

  5. 1989 Accord revs and shuts off

  6. revs drop below idle when clutching in

  7. Prelude revs up and down at idle

  8. 92 Accord Ex (Automatic)...Oil Light... Engine Reving up and down when in neutral and park...

Loading...