2002 Cavalier a/c problems

Hello,

My daughters a/c works fine and blows very cold at 40 MPH or above. When slowing down in traffic and eventually coming to a stop, you can feel the compressor cycle on and off and the air coming out of the vents is actually very warm. I attempted last night to try and service the system but it wouldn't take any refrigerant indicating to me it was fully serviced. Thanks

Mike

are the fans coming on when the a/c is on?

are the fans coming on when the a/c is on?

Yesterday when I wrote this I would have said: "let me go look", but I now I can say NO. I took it in and had a $14.95 system diagnostic done and they told me the fan was bad (which I had no idea that small fan had anything to do with the A/C operating correctly). They want $119.99 for the fan and $90.00 to install it. I stopped by Adavance Auto (Jacksonville Florida) on the way home and they have 2 fan motors in stock for $23.00 each!

Mike

A/c works by turning a liquid into a gas which creates a cooling effect. This happens in the evap core. The gas then needs to be turned back into a liquid so it firsts enters the compressor. When you compress a gas it creates heat. That heat is removed in the condenser which condenses the gas back into a liquid. No fan = no heat transfer through the condenser and the high side pressures exceed max which turns off the compressor.

If you where traveling 60 MPH down the freeway the A/C would probably work fine until you came to a stop.

A/c works by turning a liquid into a gas which creates a cooling effect. This happens in the evap core. The gas then needs to be turned back into a liquid so it firsts enters the compressor. When you compress a gas it creates heat. That heat is removed in the condenser which condenses the gas back into a liquid. No fan = no heat transfer through the condenser and the high side pressures exceed max which turns off the compressor.

If you where traveling 60 MPH down the freeway the A/C would probably work fine until you came to a stop.

So you are telling me that a $23.00 fan is causing all of this? :)

Mike

A/c works by turning a liquid into a gas which creates a cooling effect. This happens in the evap core. The gas then needs to be turned back into a liquid so it firsts enters the compressor. When you compress a gas it creates heat. That heat is removed in the condenser which condenses the gas back into a liquid. No fan = no heat transfer through the condenser and the high side pressures exceed max which turns off the compressor.

If you where traveling 60 MPH down the freeway the A/C would probably work fine until you came to a stop.

I replaced the fan motor yesterday and the A/C works like a champ! :)

Mike