 Don't know what's wrong |
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 Oct 26, 2005 - 10:31 PM
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 Enthusiast  Joined Aug 17, '03 From Bloomington, Indiana Currently Offline Reputation: 62 (98%)  |
Hey everyone... For the past my car has been idling at around 1250 rpms and all the way up to 1900 rpm when the car starts... after a while it goes back down to 1000-1100, but whats up? anyone? I searched, but dont think I knew what I was searching for
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Oct 26, 2005 - 10:41 PM
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 Enthusiast Joined Mar 8, '04 From Newport, RI Currently Offline Reputation: 63 (99%) |
first you should check to see if a vaccum hose came off or if one is damaged/cracked in the bay. That would definatly cause a high idle.
Do any under the hood stuff lately ? -------------------- |
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Oct 26, 2005 - 11:15 PM
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 Enthusiast Joined Feb 7, '03 From Northern Virginia Currently Offline Reputation: 23 (100%) |
wouldn't it do that to warm the car up? idk that's what mine does...didn't think it was such a big deal since it does fall to normal idle when it warms up
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Oct 26, 2005 - 11:47 PM
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Enthusiast Joined Jul 10, '05 From Monroe, WA Currently Offline Reputation: 6 (100%) |
1900 seems kinda high for a warm up usually 1200-1400 then a 900 idle for the st I think. anyone else agree with this?
-------------------- 94' ST Coupe - 5sfe Motor swap and brake swap.
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Oct 27, 2005 - 12:53 AM
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 Enthusiast Joined Feb 9, '03 From Sioux falls, South Dakota Currently Offline Reputation: 1 (100%) |
mine idles at 1800 or so on a cold day until the oxygen sensor heats up then it returns to normal idle at 800.
-Aaron- This post has been edited by afroman: Oct 27, 2005 - 12:53 AM --------------------  |
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Oct 27, 2005 - 1:16 AM
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 Enthusiast Joined Jun 23, '05 Currently Offline Reputation: 4 (100%) |
QUOTE(dustin15brown @ Oct 26, 2005 - 9:31 PM) Hey everyone... For the past my car has been idling at around 1250 rpms and all the way up to 1900 rpm when the car starts... after a while it goes back down to 1000-1100, but whats up? anyone? I searched, but dont think I knew what I was searching for [right][snapback]349497[/snapback][/right] idle speed should be 700rpm for 96 mt st, the IAC (idle air control valve) could be faulty. remember that idle speed varies depending on electric load. turn off all electric accessories and see if it is still idling high. if so disconnect IAC and check for proper resistance between terminals. for 96 the accepted range is 17-24.5 ohms. --------------------  I think Bigfoot is blurry, that's the problem. It's not the photographer's fault. Bigfoot is blurry. And that's extra scary to me, because there's a large, out-of-focus monster roaming the countryside. |
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Oct 28, 2005 - 1:27 AM
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Enthusiast Joined Feb 7, '05 From Fresno, CA Currently Offline Reputation: 0 (0%) |
Mine idles at 500-700 once it is warmed up.
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Oct 28, 2005 - 8:16 AM
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 Enthusiast Joined Aug 20, '03 From Annapolis, Md Currently Offline Reputation: 5 (100%) |
It could be a cold start idle,mine only goes around 1400, but every area will be dif, and the number of miles could alos change it a bit.
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