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truck rpms

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Old Nov 11, 2009 | 02:54 PM
  #1  
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truck rpms

I got my truck about a week ago not running and got it running today and at idle the rpms run around 2000 i was wondering if the problem could be with the fuel pump.
 
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Old Nov 11, 2009 | 03:35 PM
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I dont think a fuel pump can cause high rpms :P
 
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Old Nov 11, 2009 | 03:42 PM
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Vacuum leak(s)! The plastic vacuum hoses are a well-known source of leaks due to their aging and tendency to develop cracks. Rusted through metal vacuum reservoirs are also high on the list. Stuck idle control valve is next on the list AFTER every vacuum circuit has been checked and repaired.
 
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Old Nov 11, 2009 | 03:43 PM
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Suspect the IAC or a bound throttle cable. The fast idle at start should peak at about 1500 and then quickly fall off. You can kick it down manually with a tap of the accelerator.

Maybe a really massive vacuum leak? I'd pull codes if I were you. fordfuelinjection.com
 
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Old Nov 12, 2009 | 04:27 PM
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could it be the tranny that has been causing problems lately think i fixed it but was wondering.
 
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Old Nov 15, 2009 | 09:10 AM
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Originally Posted by andyman91
could it be the tranny that has been causing problems lately think i fixed it but was wondering.
Not very likely.
 
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Old Nov 15, 2009 | 09:43 AM
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my truck was doing same at idle cleaned the IAC what a difference know on to surging problems. I also replaced all vacuum lines with rubber hose made a huge difference
 
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