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  #1  
Old 11-01-2010, 06:30 AM
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Join Date: Sep 2010
Posts: 9
Default Idle RPM not consistent

So, my 96 4cyl has an idle problem. It wants to idle high at 1500 rpm but not all the time. I thought it was bc of the dirty throttle body so iI cleaned it. The problem got better for a few weeks then started again. It doesn't do it all the time, and when it does I can use the trans(manual) to drag the rpm down to 900 and then it will stay until i come back to a stop. then it will be high again, but not all the time. The IAC is newer but was replaced b4 I got the truck. Any insight would be great.
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  #2  
Old 11-01-2010, 02:11 PM
Ford Ranger Owner
 
Join Date: Aug 2010
Posts: 50
Default Re: Idle RPM not consistent

Still sounds like the IAC to me. If the TB was pretty gummed up, my bet is so is the IAC valve. I'd pull it off and clean it really good with some TB safe cleaner and a brass wire brush (that's how I clean mine without damaging anything). Oh yeah, remove the battery cable before you start. That will force the computer to re-learn it's idle and drive settings. It couldn't hurt.
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1996 Mazda B2300 SE
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  #3  
Old 11-03-2010, 07:22 AM
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Default Re: Idle RPM not consistent

Thanks for the info. I really appreciate it.
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  #4  
Old 11-03-2010, 03:08 PM
Ford Ranger Owner
 
Join Date: Aug 2010
Posts: 50
Default Re: Idle RPM not consistent

No problem. Let us know how it turns out.
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