Its not cool
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Its not cool
I have a 93 F-250 with the 7.3L diesel (non-turbo). The A/C is not working and the vent blows partly warm air even at the coolest setting. The A/C clutch does not engage and there is no voltage present at the compressor connector when I turn the A/C on. When I jumper 12 volts to the compressor it engages but the system does not put out any cool air. Is this as simple as needing a charge? Is there a low pressure switch in the system which prevents the compressor from running with low/no freon in the system?
Great truck so far (got a great deal when I bought it about 3 months ago). Hope to install a Banks sidewinder in the next year or two.
Jeff
Great truck so far (got a great deal when I bought it about 3 months ago). Hope to install a Banks sidewinder in the next year or two.
Jeff
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i ain't rite
Joined: Mar 2005
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From: Marlboro Mental Hospital.
yes, there is a low pressure switch, and yes, you need a recharge. but before you recharge it, you should run a vacuume test on it to see if there is a leak so you do not waste the freon
Postmaster
Joined: Jun 2004
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From: Pleasant Hill, MO
if it's similar to my F-150's cooling system, it only took 1 pound of R-134a refrigerant to charge the thing. If you are buying stuff or paying for a vacuum test, waste 10 bucks on the one pound of refrigerant. might be cheaper.
Ryan
Ryan
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Originally Posted by tjc transport
yes, there is a low pressure switch, and yes, you need a recharge. but before you recharge it, you should run a vacuume test on it to see if there is a leak so you do not waste the freon
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Joined: Sep 2004
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From: Douglasville,GA
If you can find it in your area there is a drop in replacement for R12 that allows you to top off your existing system with no modifications. One way you can check for leaks is to apply a soapy water solution to all of the fittings and connections. You may find a loose schrader valve. Don't worry about pulling a vacuum on the system unless you evacuate it to make repairs.
If you are unsure of your ability,check with a reputable repair shop.
If you are unsure of your ability,check with a reputable repair shop.
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