Ac issues on a 99 beetle
#1
05-07-2008, 03:43 PM
Ac issues on a 99 beetle
Ok, my wifes beetle has not had a working AC since early last year. She wasn't worried about it so I let it go untill now.
I checked to see if the compressor kicked on and it did not. However I remember reading someplace that if the system is completly emtpy of freon it was designed not to come on? I also checked the fuses ontop of the batt, all of which looked fine.
My bro had a spare can of AC booster laying around and he brought it up this afternoon. I followed the directions on the can and none of the freon seemed to exit the can. However when I checked the dash vents, the temp seemed to get cool and then warm again, but never cold!
Is there anything else I should check?
thanks
I checked to see if the compressor kicked on and it did not. However I remember reading someplace that if the system is completly emtpy of freon it was designed not to come on? I also checked the fuses ontop of the batt, all of which looked fine.
My bro had a spare can of AC booster laying around and he brought it up this afternoon. I followed the directions on the can and none of the freon seemed to exit the can. However when I checked the dash vents, the temp seemed to get cool and then warm again, but never cold!
Is there anything else I should check?
thanks
#3
05-07-2008, 04:43 PM
RE: Ac issues on a 99 beetle
The AC system does have a pressure switch that will not allow the compressor to come on if the charge is low. You can check the compressor by removing the connector at the switch and jump terminals 1 and 2, that will bypass the switch. If you added some R134a to the system make sure it was added to the low side(marked by a L on the cap). The pressure should be around 35 to 45 psi if the system is good. This is checked with the system on and the fan on high. There are more fuses on the left side of the instrument panel under a plastic cover. Open the drivers side door and you will see and have access to it.The best way to test the system is with a manifold guage set to find out what the pressure is on both the high and low sides. Start withthe simple and check all the fuses, both on thebattery and on the inside. Then remove theconnector on the compressor and clean itas well as the one on the pressure switch.If the fan works and the compressor clutch engages and still no cool air the problem my be in the rest of the system such as the receiver-dryer or possibly an overcharge.
#5
05-07-2008, 07:38 PM
RE: Ac issues on a 99 beetle
ORIGINAL: mausolfh
The AC system does have a pressure switch that will not allow the compressor to come on if the charge is low. You can check the compressor by removing the connector at the switch and jump terminals 1 and 2, that will bypass the switch. If you added some R134a to the system make sure it was added to the low side(marked by a L on the cap). The pressure should be around 35 to 45 psi if the system is good. This is checked with the system on and the fan on high. There are more fuses on the left side of the instrument panel under a plastic cover. Open the drivers side door and you will see and have access to it.The best way to test the system is with a manifold guage set to find out what the pressure is on both the high and low sides. Start withthe simple and check all the fuses, both on thebattery and on the inside. Then remove theconnector on the compressor and clean itas well as the one on the pressure switch.If the fan works and the compressor clutch engages and still no cool air the problem my be in the rest of the system such as the receiver-dryer or possibly an overcharge.
The AC system does have a pressure switch that will not allow the compressor to come on if the charge is low. You can check the compressor by removing the connector at the switch and jump terminals 1 and 2, that will bypass the switch. If you added some R134a to the system make sure it was added to the low side(marked by a L on the cap). The pressure should be around 35 to 45 psi if the system is good. This is checked with the system on and the fan on high. There are more fuses on the left side of the instrument panel under a plastic cover. Open the drivers side door and you will see and have access to it.The best way to test the system is with a manifold guage set to find out what the pressure is on both the high and low sides. Start withthe simple and check all the fuses, both on thebattery and on the inside. Then remove theconnector on the compressor and clean itas well as the one on the pressure switch.If the fan works and the compressor clutch engages and still no cool air the problem my be in the rest of the system such as the receiver-dryer or possibly an overcharge.
Thanks
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