Pre-1997 Models

surging while running a/c

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Old Jun 14, 2010 | 06:00 PM
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junebug55's Avatar
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From: nc
surging while running a/c

i have a 88 f-250 with a 460 this past week while funning the a/c the truck will surge like it has gained HP. then after a few times of doing that it will go back to running like it used to also a couple of mornings on the way to work the check engine light will flash but will not stay on. could it be a sensor or something clogged up?
 
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Old Jun 14, 2010 | 10:17 PM
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Optika1 illushu's Avatar
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From: Coal Region, Pa
does the idle rise when the A/C compressor cycles?
 
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Old Jun 16, 2010 | 08:42 AM
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From: nc
yes about 100 to 200 rpms
 
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