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.

high idle 1st start

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Old 10-01-2006, 11:15 AM
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foxpony28
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Join Date: Jul 2006
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Default high idle 1st start

my 88 GT idles at almost 1200 rpm the first time you start it up and will idle there the whole time you drive it. when the car is warm if i turn it off and turn it back on it idles at the right rpm, or even after it will sit for hours after the first time i drive it that day it idles right. i olnly drive it on nice days could it be from sitting for days at a time? i'm think its some kinda of sensor like the tps or idle air control please tell me what you think. thanks.



88 5.0 BBK -fender cold air, shorty headers, off-road h-pipe, 65mm throttle body, under drive pulleys- ford racing 9mm wires flow master 40's
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