Ac showing overfull compressor cycling off and on HELP!!!
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Ac showing overfull compressor cycling off and on HELP!!!
2003 dodge ram 3500 blows warn when idle cold when driven but compressor cycling ever couple of seconds bought a recharge can and gauge shows 100-130 when compressor on and 55-65 when compressor cycles off but showing it to be over full any advise would be helpful
Champion
Joined: May 2012
Posts: 3,065
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From: Renton, WA
are you sure you're hooked up to the right side?
should be the larger diameter line next to or on the dryer that you want to hook up to...
and pressure should drop while the compressor is engaged, and should raise when the compressor stops turning.
should be the larger diameter line next to or on the dryer that you want to hook up to...
and pressure should drop while the compressor is engaged, and should raise when the compressor stops turning.
Veteran
Joined: Jun 2011
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From: ND
Welcome to DF
Driving down the road everything seems fine, but once you stop or are idleing the A/C quits blowing cold?
Try cleaning out the A/C condenser on the very front of the radiator. You would not beleive the amount of crap that gets lodged in there. Bugs, rocks, road grime. Hopefully its just restricted air flow to the condenser and a good cleaning clears everything up.
Driving down the road everything seems fine, but once you stop or are idleing the A/C quits blowing cold?
Try cleaning out the A/C condenser on the very front of the radiator. You would not beleive the amount of crap that gets lodged in there. Bugs, rocks, road grime. Hopefully its just restricted air flow to the condenser and a good cleaning clears everything up.
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Joined: Sep 2011
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Those sound like numbers hooked up to the high side, not the low side. If your gauge is hooked up to the high side, those numbers are too low. It should be around 75 PSI when compressor is off and around 180 PSI when it's on.
If you've lost some pressure, you have a leak. If it's still able to hold the pressures you stated, it's a very small leak. You'll eventually want to find out where the leak is by adding some dye. Wait a few weeks and check all the AC lines and components for leaking dye.
In reality, you can't accurately fill your system by PSI (pressure), you fill by pounds (as in weight). The only way to do this is to empty all the freon (recover) and refill it with the correct amount. You'll have to take it to a shop for them to do this unless you have an AC recovery machine. The sticker under the hood will tell you how many pounds you need, usually about 2 lbs. Shops charge a service fee + price per pound. You won't need 2 pounds because there's already freon remaining in the system. They simply suck it out so the system's empty, then refill what was sucked out + whatever additional is needed to get 2 lbs of freon. We charge about $75 to do this at my shops. We add dye for another $20.
If you've lost some pressure, you have a leak. If it's still able to hold the pressures you stated, it's a very small leak. You'll eventually want to find out where the leak is by adding some dye. Wait a few weeks and check all the AC lines and components for leaking dye.
In reality, you can't accurately fill your system by PSI (pressure), you fill by pounds (as in weight). The only way to do this is to empty all the freon (recover) and refill it with the correct amount. You'll have to take it to a shop for them to do this unless you have an AC recovery machine. The sticker under the hood will tell you how many pounds you need, usually about 2 lbs. Shops charge a service fee + price per pound. You won't need 2 pounds because there's already freon remaining in the system. They simply suck it out so the system's empty, then refill what was sucked out + whatever additional is needed to get 2 lbs of freon. We charge about $75 to do this at my shops. We add dye for another $20.
Last edited by autoexpress; Aug 4, 2012 at 08:31 AM.
