5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old May 23, 2009 | 08:12 PM
  #1  
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Exclamation HELP!!!

hey guys whats a normal idle for a manual 5.0? becasue mine sits at about 600 rpm at idle. and my volt meter jump back and forth till i start driving it. any input would be great and much appreciated! thanks guys
Old May 23, 2009 | 08:34 PM
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mine is around 1100, my dads 70 is around 1250 or so
Old May 23, 2009 | 08:48 PM
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urs sounds high. isnt normal like 750-800?
Old May 23, 2009 | 09:08 PM
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are you having a problem???
Old May 23, 2009 | 09:19 PM
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um kinda. every time i re-time it i pull that plug ur supposed to to time it(forgot the name of that censor) and every time i plug it back in it goes back down to 600. i cant figure out why
Old May 23, 2009 | 09:31 PM
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it's the spout connector.......set timing with spout out......then perform a base idle reset
Old May 23, 2009 | 09:34 PM
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yea thats what i did. ill disconnect it and time it and every time i plug it back in the computer resets it to 600 rpm. it was never that low till about a month ago. it always sat around 750-800 rpms
Old May 23, 2009 | 09:38 PM
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run a koer and make sure that no IAC codes are presesnt
Old May 23, 2009 | 09:40 PM
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The U/D pulleys you have might be part of the problem. Either swap out the alt or put the stock pulley back on.
Old May 23, 2009 | 09:44 PM
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umm ha im not quite sure how to run that test lol

and Boss Hotrod it never did this before and ive had the pulleys on for over a year now

Last edited by 95stang gt; May 23, 2009 at 09:47 PM.



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