RPM Fluctuating between 1000 - 2000 at Idle
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Old November 22nd, 2010, 11:42 PM   #1
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RPM Fluctuating between 1000 - 2000 at Idle


Recently my 3.8L V6 mustang has been having problems with the RPMs. While I have my car in park the RPMs will fluctuate between 1,000 to as high as 2,000 RPMs. Lately its been doing this about once or more per minute. The vehicle is already warmed up when doing this and so far I don't have any lights on. Any Suggestions on what it could be?

PLEASE HELP!
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Old November 23rd, 2010, 01:26 AM   #2
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clean your IAC and MAF, im sure there is a good write up if you google it.
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Old November 23rd, 2010, 03:06 AM   #3
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Carb cleaner... happened to me before.

Unfortunately for me, cleaning it wasn't enough... replaced it.

Plus you WILL find write-ups by search on Google.
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Old November 23rd, 2010, 11:13 AM   #4
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Originally Posted by southfour View Post
clean your IAC and MAF, im sure there is a good write up if you google it.
This. I'll do a writeup on this sometime this week for the site in my sig (I've got a ton of stuff I need to get written for that). Anyone wanna get me a clear pic of an iac? I'm without my car (on vacation but always checkin in with you guys lol).

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Old November 23rd, 2010, 10:52 PM   #5
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Thank you so much!


Thank you! I asked some people at my work (I work at a car dealership) and they said the IAC is most likely and that you can't clean them, just better to replace it. But at least now I know what the problem is.
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Old November 24th, 2010, 06:42 PM   #6
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They are retarded, you can clean it... I would from now on no longer listen to them.
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Old November 24th, 2010, 07:37 PM   #7
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Originally Posted by Europegirl17 View Post
Thank you! I asked some people at my work (I work at a car dealership) and they said the IAC is most likely and that you can't clean them, just better to replace it. But at least now I know what the problem is.
I recommend all of them be fired. IACs can be cleaned. I've cleaned mine and it fixed the same issue you're having. There's no reason to replace a $60 part when you can clean your current one and it should fix the problem.
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