2001 7.3 AC not working
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Senior User
Joined: Jun 2010
Posts: 260
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From: Prince Edward Island
2001 7.3 AC not working
Hi,
My AC stopped working, not sure when as we hadnt used it since last fall and I tried it once over the winter to keep it lubed up.
Tried so far:
pressure switch on the evaporator - wont turn on the compressor. Had the truck running with AC running(warm air) jumped the connector with no result.
air clutch spacing - currently at .032 is this too much? If I read it right, it should be .020? Would that cause it to not engage at all?
What would my next step be to try?
Thanks!
My AC stopped working, not sure when as we hadnt used it since last fall and I tried it once over the winter to keep it lubed up.
Tried so far:
pressure switch on the evaporator - wont turn on the compressor. Had the truck running with AC running(warm air) jumped the connector with no result.
air clutch spacing - currently at .032 is this too much? If I read it right, it should be .020? Would that cause it to not engage at all?
What would my next step be to try?
Thanks!
Thread Starter
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Senior User
Joined: Jun 2010
Posts: 260
Likes: 0
From: Prince Edward Island
Hi,
Tapped the plate and wont engage, started the "shim fix" and turned on key/ac and the clutch didnt move.. so I couldnt get the 88mm bolt out.
Would that mean something else is wrong? I checked the connections and the #24 fuse which all seem ok.
thanks!
Tapped the plate and wont engage, started the "shim fix" and turned on key/ac and the clutch didnt move.. so I couldnt get the 88mm bolt out.
Would that mean something else is wrong? I checked the connections and the #24 fuse which all seem ok.
thanks!
Thread Starter
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Senior User
Joined: Jun 2010
Posts: 260
Likes: 0
From: Prince Edward Island
Which one is the low pressure switch? I jumped the one on the canister. If I remember right without going out to look, there is 2 plugins on the side of the compressor.
Thanks!
Thanks!
Logistics Pro
Joined: Jul 2003
Posts: 3,595
Likes: 52
From: Lawton, Oklahoma
Check for power through the high pressure cutoff switch to the clutch. If you are getting power to the clutch (check with multimeter to ensure it is full battery voltage, you may have a bad clutch coil. Those high pressure cut off switches and the pigtails to them have been problematic over the years. Ive bypassed a few of them when I couldnt get appropriate replacement pigtail or pins to repair the connector. There may be high resistance from burned pins in the switch too. (The high pressure switch is the one in the line next to the compressor. Low pressure is the cycling switch on the accumulator)
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Thread Starter
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Senior User
Joined: Jun 2010
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From: Prince Edward Island
Looks like that is the problem!!
After plugging it back in after testing voltage, the clutch engaged... so worked for a few minutes before stopping again, moved it a bit and started again.. think I will get new ends for it or squeeze the connectors tighter THANKS for the info leading to such a simple fix
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