A/C not working well

mikelbeck

Buick Newbie
6
0
1
Buick Ownership
2002 Rendezvous
I recently bought a 2002 Rendezvous CX for my son. The A/C works but has a few issues.

It takes a long time for it to get cold but it does eventually. Yesterday we were out driving the car (it was in the high 80s outside) and it took 10 minutes before it was cool and about 20 minutes before it was comfortable inside. Could it just need a charge?

There are 2 vents that blow warm air when the A/C is on. The others blow cool (not cold) air. Here's an image I found online https://media.ed.edmunds-media.com/buick/rendezvous/2003/oem/2003_buick_rendezvous_4dr-suv_cx_d_oem_1_500.jpg, the vents I'm talking about are the ones are the one on the left hand side above the headlight switch and the one in the middle above the CD slot. Also I was hearing a hissing sound from the dashboard while the A/C was on, but only on the driver's side. What would cause this?

Any ideas?
 

txbarney

Full Member
268
2
18
Central Texas
Buick Ownership
Buick
There could be several things to check on a 15 year old car. You might check the cabin air filter, I think all Rendezvous had one, it might be dirty and clogged. A dirty filter will slow down the air flow and take longer to cool the car.
Buy a $5 thermometer at the auto parts store.....stick it in the vent and check the temp of different vents. At road speeds you should see the output temp below 50, ideally 40.
 

mikelbeck

Buick Newbie
6
0
1
Buick Ownership
2002 Rendezvous
So I'm back to my 2 year old thread. The A/C no longer even tries to blow cool air, it's just warm. The compressor and clutch are both spinning and I checked the low side pressure and it has enough. I'm thinking this problem is either the blend door/motor or the orifice tube. Any suggestions about what to check?
______________________________
 

mikelbeck

Buick Newbie
6
0
1
Buick Ownership
2002 Rendezvous
Correction. The clutch is not spinning. When I turn on the A/C, the fan doesn't spin either. If I disconnect the temp sensor both fans go on, so at least I now they're getting power and the motors work.
 
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