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  • #1

    Intermittent high idle

    Every couple days my camaro idles at 1500 rpm in park when warm and 1200 in gear. Sometimes if I do a wot throttle snap it idles back down to normal. It doesn't work all the time.

    Checked my tps voltage. 0.463 volts closed, and 4.63 at wot. I slowly checked the voltage from closed throttle to open and I get a smooth increase in voltage.
    Last edited by Blue_Thunder; August 15th, 2010, 02:03 PM.

    1989 Stock L98, Holley Stealth Ram intake, Hooker Headers, GMMG cat-back with cat-delete, #24 Bosch D3 Injectors
    Tags: 120, 1200, 1500, 200, 500, adjustment, back, bad, camaro, couple, days, dow, gear, high, idle, idles, men, normal, park, rpm, ten, throttle, tps, work, wot
  • #2
    Your IAC could be sticking
    Gone but not forgotten: 1986 Chevrolet Camaro IROC-Z

    "You shall ride eternal. Shiny and chrome."

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    • #3
      I thought about that. But would it be that intermittent?

      1989 Stock L98, Holley Stealth Ram intake, Hooker Headers, GMMG cat-back with cat-delete, #24 Bosch D3 Injectors

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      • #4
        It's possible
        Gone but not forgotten: 1986 Chevrolet Camaro IROC-Z

        "You shall ride eternal. Shiny and chrome."

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        • #5
          I replaced the IAC, It didn't really help. The engine didn't idle high all the time driving but at 3 lights it was idling at 1200 rpms... Now I have no idea whats causing this.

          1989 Stock L98, Holley Stealth Ram intake, Hooker Headers, GMMG cat-back with cat-delete, #24 Bosch D3 Injectors

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          • #6
            vacuum leak or tps, did you check the tps coming down from open throttle to close and find any glitch spots?

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            • #7
              Originally posted by Dudek View Post
              vacuum leak or tps, did you check the tps coming down from open throttle to close and find any glitch spots?
              I checked the tps both ways. Its good. Wouldn't a vacuum leak make it idle high all the time though?

              1989 Stock L98, Holley Stealth Ram intake, Hooker Headers, GMMG cat-back with cat-delete, #24 Bosch D3 Injectors

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              • #8
                I had a high idle problem and my comp. wouldn't relearn a new tps base position, so I slotted the holes in the tps and turned it to read 0%

                Used to own a Firebird.

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                • #9
                  Try cleaning the throttle blades, they could be sticking or adjusted improperly. Eric L

                  1997 Camaro SS #2819 M6, Red, 3.42, 1 of 27, Ttops, BBK shorty headers, Flowmaster cat back, 1.6 rr, LT4 valve springs, ASAM CAI, Centerforce clutch, runs 12s, breaks 10 bolts.
                  http://s602.photobucket.com/albums/t...20Camaro%20SS/


                  1963 Plymouth Valiant Signet 200, 6.0 LS3, Carb, Rapid Motorsports Dominator 2X cam.
                  http://s602.photobucket.com/albums/t...uth%20Valiant/

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                  • #10
                    Originally posted by prorac1 View Post
                    Try cleaning the throttle blades, they could be sticking or adjusted improperly. Eric L
                    Thats what I was thinking, dirty TB.


                    May be time for some seafoam too?
                    1998 Chevrolet Camaro Z28 - 6 Speed

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