1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Car is reving nonstop?

Discussion in 'General Tech and Maintenance' started by raidmax, Nov 14, 2006.

  1. raidmax

    raidmax New Member

    Messages:
    140
    Likes Received:
    1
    Joined:
    Sep 3, 2006
    Location:
    East Coast
    When I start my car it revs to about 3000 rpms then goes down to 1100 rpms..... and keeps doing this over and over?

    I've checked all the vac lines and it looks like everything is pluged up in the engine bay...
     
  2. joecivic

    joecivic save the single cams

    Messages:
    177
    Likes Received:
    2
    Joined:
    Sep 10, 2006
    Location:
    baltimore
    air ldle control valve is a common problem and will cause this to happen
     
  3. kkid28

    kkid28 He who burns the rubber.

    Messages:
    45
    Likes Received:
    0
    Joined:
    Nov 5, 2006
    Location:
    Regina, Saskatchewan.... Canada!
    A little more detailed perhaps?
     
  4. D See 2

    D See 2 Senior Member

    Messages:
    2,405
    Likes Received:
    0
    Joined:
    Sep 29, 2002
    Location:
    Baltimore, MD
    There has got to be a vac leak somewhere... 3000 is pretty high. Check all hoses, PCV valve, and gaskets. Also, the FITV (fast idle thermo valve) could be way out...
     
  5. igotnothin

    igotnothin New Member

    Messages:
    228
    Likes Received:
    5
    Joined:
    Oct 2, 2006
    Location:
    harford co MD
    hit it with a hamer and light the bitch on fire


    sounds like the idle controle, double check vac lines, and check them again. almost positive that is it. same thing with my old civic. never go to 3000 though
     
  6. fakk_13

    fakk_13 92GSRB17

    Messages:
    37
    Likes Received:
    0
    Joined:
    Oct 20, 2006
    Location:
    Oak Town, WA
    yeah my car did that to and it was my intake air control valve. on my car its located by the throttle postion sensor on the intake manifold.
     
  7. raidmax

    raidmax New Member

    Messages:
    140
    Likes Received:
    1
    Joined:
    Sep 3, 2006
    Location:
    East Coast
    I just replaced all the vac lines about a week ago. I'll check and see if I have any leaks tomorrow.
     
  8. SlushboxTeggy

    SlushboxTeggy It's only stupid if it doesn't work VIP

    Messages:
    9,392
    Likes Received:
    245
    Joined:
    Sep 14, 2004
    Location:
    New Jersey
    Check your coolant level. I use to have that problem when my radiator was leaking. It would rev like that when the coolant was low.
     
  9. raidmax

    raidmax New Member

    Messages:
    140
    Likes Received:
    1
    Joined:
    Sep 3, 2006
    Location:
    East Coast
    Can somebody tell me where the Air Idle Control Valve and the fast idle thermo valve is located? I've searched google and searched through my Chilton Repair Manual and cant figure out where they are.

    I have a h22a JDM swap in my prelude... stock manifold and tb.
     
  10. raidmax

    raidmax New Member

    Messages:
    140
    Likes Received:
    1
    Joined:
    Sep 3, 2006
    Location:
    East Coast
    bump....

    can somebody tell me where the Air Idle Control Valve and the fast idle thermo valve is? JDM h22a motor and stock intake mani.

    **Edit
    I took a hammer and started beating the shit out of everything under the hood. I then drove my car around the neighborhood (really fast) and now it doesnt rev anymore. It idles now around 1400 rpms.
     
    Last edited: Nov 18, 2006
  11. raidmax

    raidmax New Member

    Messages:
    140
    Likes Received:
    1
    Joined:
    Sep 3, 2006
    Location:
    East Coast
    coolant level is good.... my car is overheating. I've replaced the thermostat, but didnt help anything.

    I can feal fluid in the radiator feed hose and the return hose. I can take off the hose from the top of radiator to the radiator resivore.... and "steam" is coming out of the hose. It doesnt seem like any fluid is leaving the resivore and circulating in the engine.

    ...after I beat the hell out of everything under my hood, it now only has the rev problem untill it warms up. Then it idles fine @ about 1300 rpms. When I first start it, it revs to about 2500 rpms then down to 1000 rpms and repeats.
     
  12. fasterimage

    fasterimage 2 SLOW CREW

    Messages:
    124
    Likes Received:
    0
    Joined:
    Jul 30, 2006
    Location:
    State College, PA
    that sounds about like the problem I am currently trying to solve myself....if i find something i'll let ya know!
     
  13. F22HB

    F22HB New Member

    Messages:
    69
    Likes Received:
    0
    Joined:
    Aug 14, 2006
    similar problem on my car, it gets better as it warms up.
     
  14. raidmax

    raidmax New Member

    Messages:
    140
    Likes Received:
    1
    Joined:
    Sep 3, 2006
    Location:
    East Coast
    Where is the fast idle thermo valve and air idle control valve?

    JDM h22a /w stock intake manifold.

    Problem not solved.... my prelude still idles up to about 2500 rpms then down to 1200 rpms over and over.
     
  15. GSRCIVICTN

    GSRCIVICTN Lost in a sea of rednecks

    Messages:
    431
    Likes Received:
    3
    Joined:
    Feb 10, 2006
    Location:
    Nashville, TN
    Beating it with a hammer didn't fix it??
     
  16. Nickg4c

    Nickg4c Member

    Messages:
    127
    Likes Received:
    0
    Joined:
    Jul 28, 2006
    Location:
    Gilbert, Az
    Take the throttle body off the car, look at the side that would have faced the firewall, you should see two screws holding a plate on. Unscrew them and pull the plate off. Take a couple screwdrivers and screw the plastic thing in there down, reassemble and see if that fixes the reving problem. I think you have an air bubble as well which is causing the thing to overheat, you'll have to try and get it out or take it to a shop that has a special tool for getting them out. Just to let you know the air idle control valve is on the front of the intake manifold and has a coolant line running to it, if this is the problem its cause of the air bubble.
     
Verification:
Draft saved Draft deleted

Share This Page