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 A/C help on 2000 Chev 1 ton
#1560420
08/25/07 11:33 PM
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Joined: Oct 2004
Posts: 413
Hunt n Fish
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Angler
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OP
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Joined: Oct 2004
Posts: 413 |
 OK, Here's the deal... 2000 Chevy Extended Cab 1 Ton dually with 7.4 engine. Only has 29000 miles and sits in enclosed building until we go camping with 5th wheel. AC doing funny things. Runs a while, cools like crazy (I'm talking good and cold), then quits. At first I thought maybe the compressor was cycling for low freon, but it's showing about 40 lbs low side running on Max. Then one time it quit and when I hit a small chug hole it started cooling again. Same thing happened to my wife. Bump it stops, bump it starts. Sounds like a short to me. Aside from making sure all connectors are in good & tight has anyone got any other ideas before I break down and go the shop route to trace the harness. 
"Life is not waiting for the storm to end - It's about learning to dance in the rain" HnF  
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 Re: A/C help on 2000 Chev 1 ton
[Re: Hunt n Fish]
#1561161
08/26/07 01:12 PM
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Joined: May 2005
Posts: 8,909
fool4fishing
TFF Celebrity
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TFF Celebrity
Joined: May 2005
Posts: 8,909 |
OK, Here's the deal... 2000 Chevy Extended Cab 1 Ton dually with 7.4 engine. Only has 29000 miles and sits in enclosed building until we go camping with 5th wheel. AC doing funny things. Runs a while, cools like crazy (I'm talking good and cold), then quits. At first I thought maybe the compressor was cycling for low freon, but it's showing about 40 lbs low side running on Max. Then one time it quit and when I hit a small chug hole it started cooling again. Same thing happened to my wife. Bump it stops, bump it starts. Sounds like a short to me. Aside from making sure all connectors are in good & tight has anyone got any other ideas before I break down and go the shop route to trace the harness. Check out the connectors in back of the control head. Seen one in the past with that same problem and it was a connector not making good contact. If you do remove it, take a pick and bend the tabs a little to make it tighter. Also check the connector at the low pressure switch and do the same.
F4F LIFE'S TOO SHORT TO FISH ONLY ON WEEKENDS!
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Re: A/C help on 2000 Chev 1 ton
[Re: fool4fishing]
#1561391
08/26/07 04:14 PM
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Joined: Aug 2004
Posts: 9,407
Stan Browning
TFF Celebrity
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TFF Celebrity
Joined: Aug 2004
Posts: 9,407 |
replace the low pressure cycling switch on the receiver dryer,very common problem on that year model especially with the low mileage.
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Re: A/C help on 2000 Chev 1 ton
[Re: Stan Browning]
#1561486
08/26/07 05:25 PM
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Joined: Oct 2006
Posts: 3,293
bubba gump
TFF Team Angler
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TFF Team Angler
Joined: Oct 2006
Posts: 3,293 |
stan is right on, low pressure cycling switch! seen it many times. we usualy open hood when it is malfunctioning, and tap on pressure switch. will cause compressor to start working
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Re: A/C help on 2000 Chev 1 ton
[Re: bubba gump]
#1561696
08/26/07 07:38 PM
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Joined: Oct 2004
Posts: 413
Hunt n Fish
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Posts: 413 |
Thanks for the info.
I'll check the rest of the connectors - (easist) then go for the cycling switch....
Is this switch something that can be replaced without pulling the system down? I don't have a vacuum pump or reclaimer or what ever you call that thing to save the freon.
At least I've got an idea and I'm not loosing my marbles!
Thanks again......
"Life is not waiting for the storm to end - It's about learning to dance in the rain" HnF
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Re: A/C help on 2000 Chev 1 ton
[Re: Hunt n Fish]
#1561904
08/26/07 10:00 PM
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Joined: Aug 2004
Posts: 9,407
Stan Browning
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TFF Celebrity
Joined: Aug 2004
Posts: 9,407 |
Yes just be quick taking it off and putting it back on it has a schrader that will shutoff when it is not depreesed by the switch.
Last edited by Stan Browning; 08/27/07 04:01 AM.
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Re: A/C help on 2000 Chev 1 ton
[Re: Stan Browning]
#1578019
09/03/07 12:03 AM
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Joined: Oct 2004
Posts: 413
Hunt n Fish
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Follow-up
Pressure Switch replaced - working good!
Thanks again........
"Life is not waiting for the storm to end - It's about learning to dance in the rain" HnF
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Re: A/C help on 2000 Chev 1 ton
[Re: Hunt n Fish]
#1578617
09/03/07 02:06 PM
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Joined: Aug 2004
Posts: 9,407
Stan Browning
TFF Celebrity
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TFF Celebrity
Joined: Aug 2004
Posts: 9,407 |
Glad to have helped.and also glad your fixed.
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