1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage

A/C cycling switch

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Old 05-31-2010, 01:17 PM
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A/C cycling switch

I have a 2001 F-150 truck that at 2000 rpm and above, the suction line on A/C drops down to 24 psi therefore the cycling switch opens but will not close until the truck has set and completely cooled off. Is the suction line suppose to drop that much pressure, should I have more refrigerant?
 
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