94prelude-s Posted January 13, 2009 Share Posted January 13, 2009 !!! I hadve just recently went and bought me a 1994 honda prelude s and i am having a idle problem. when i start my car and it just sits there and runs the car will rev up and down between 1 thousand RMP and 1.5, and i will do that asd long as the car is idleing, but as soon as i trun the A/C on it will stop and idle like it should.I had bought a idle control valve i think thats what it was and put that on because someone told me that was most likely my problem and i was not! does anyone have the same problem? and if so did you get it fixed? and how could i get mine running right? Link to comment Share on other sites More sharing options...
Repsol Posted January 14, 2009 Share Posted January 14, 2009 IACV. (Idle-Air-Control-Valve) Mine does the same thing. I'm not sure how to fix it though. It's not hard, but somebody on here should be able to guide you through it. Link to comment Share on other sites More sharing options...
James Matteu Posted January 14, 2009 Share Posted January 14, 2009 Find the vaccum leak, it should be making a hissing sound. Since you bought the car with a leak, you probably cannot distinguish the sound from the other noises the car makes, so find someone with a Prelude or Accord that works fine and listen to the motor with the hood up, then compare with yours; it should be obvious where the leak is at that point. Link to comment Share on other sites More sharing options...
Repsol Posted January 15, 2009 Share Posted January 15, 2009 I don't know how to fix mine. :( Link to comment Share on other sites More sharing options...
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