AC Problem during acceleration after complete replacement

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Jul 2, 2014 | 07:13 AM

#16

projectSHO89

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Joined: Jan 2004

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From: St Louis

The problem is not charge level.

The clutch I referred to is not the fan clutch but rather the compressor clutch. it sounds like, for whatever reason, it is disengaging. Usually this is due to either hard acceleration (PCM disengages it to give the power to acceleration) or the compressor clutch is simply slipping mechanically under too much load.

A capable scan tool can monitor the PCM's PIDs for the AC Clutch Relay to see if the PCM is commanding the disengagement.

I'd probably lean towards a bad clutch.

Jul 2, 2014 | 08:02 AM

#17

ag-ford-4x4

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Joined: Aug 2005

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Quote:

Originally Posted by projectSHO89

What kind of scan tool do I need? My scangauge won't do it. The compressor is new.....and I know for fact the clutch plate was brand new, which means the pulley and solenoids and everything on the compressor was new. My tag under the hood says 42oz, but I thought I read a blurb somewhere that Ford changed this spec. does anyone know how much refrigerant is supposed to be in this truck? I was only charged for 32oz, but obviously there was some left over in the machine or soemthing. Never could get a straight answer on how much was actually put in.