A/C compressor wont kick on
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Elder User
Joined: Sep 2008
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From: Stafford, VA
A/C compressor wont kick on
2004 X 5.4.
Turn **** to A/C, MAX A/C, or defrost and nothing. I checked the 10 amp fuse in the panel. it's fine. I can hear the relays working when I turn to defrost or to a/c. Last summer I added some 134A to it to top it off. The defrost worked fine all winter long. Will the compressor come on if the 134a is low? or is there some sort of low freon sensor? If I walk out to the truck, should I be able to spin the clutch by hand w/out the vehicle running?
Turn **** to A/C, MAX A/C, or defrost and nothing. I checked the 10 amp fuse in the panel. it's fine. I can hear the relays working when I turn to defrost or to a/c. Last summer I added some 134A to it to top it off. The defrost worked fine all winter long. Will the compressor come on if the 134a is low? or is there some sort of low freon sensor? If I walk out to the truck, should I be able to spin the clutch by hand w/out the vehicle running?
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Elder User
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From: Stafford, VA
Dumb question. Where is the accumulator and the lp switch?
Senior User
Joined: Dec 2008
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From: Taylors, SC
On the passenger side firewall. It is the vertically mounted cylinder abount the size of a 16 oz coke bottle that has a hard line going into the top and also has a port for the low pressure test / charging hose.
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Elder User
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From: Stafford, VA
Alright. I'll try this tomorrow or the next day and report back fellas. Thanks
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From: Houston, Texas
I had the same problem last year when I had to replace the A/C condenser on my truck. If it's low, it simply won't kick on no matter what you do. It took about 3 cans of the synthetic stuff you can get at walmart or autozone. As soon as it had enough, it kicked on and has kept my truck cool ever since. You may need to bleed off some air for it kick in, but try adding some refrigerant first....
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Elder User
Joined: Sep 2008
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From: Stafford, VA
OK UPDATE!!
I added a can of freeon today, and it still didn't wanna kick on so I jumped out the low pressure switch and it started working. I hooked the switch back up and shut off the truck, when I restarted it, it started cycling properly. Should be good for now unless I have a leak somewhere. Thanks fellas!!
I added a can of freeon today, and it still didn't wanna kick on so I jumped out the low pressure switch and it started working. I hooked the switch back up and shut off the truck, when I restarted it, it started cycling properly. Should be good for now unless I have a leak somewhere. Thanks fellas!!
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Elder User
Joined: Sep 2008
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From: Stafford, VA
Thats my next move. I have a co worker with the dye kit, so I'll use his. Thanks for the replies.
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