1997 Volkswagen Jetta A/C no cold air

J_STINE

MEMBER
1997 VOLKSWAGEN JETTA
4 CYL
FWD
MANUAL
125,000 MILES

1997 Jetta GT. My a/c is not blowing cold air. I checked the low side pressure and get a reading of 45 psi. Compressor is clicking on. I have no idea what could be wrong. Anyone got an idea?

Tuesday, May 19th, 2009 AT 10:15 AM

3 Replies

DOCFIXIT

MECHANIC
18,828 POSTS

Hi
What is at rest low side? Does compressor cycle on and off? Can you get a high side reading? Are line going into evaporator cold to touch? Is air kinda cool or just hot?
Let me know
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Tuesday, May 19th, 2009 AT 2:48 PM

J_STINE

MEMBER
2 POSTS

Thanks for the quick response.
Low side rest pressure is almost 100 psi. Compressor does not cycle on and off constantly; it stays on when I press the a/c button on the console. I can't get a high side reading because the connection requires a different fitting than the low side connector.

The lines going into the evaporator are both the same temperature when running the car for over 10 mins, and compressor for at least 5 mins; they are kinda cool, but not cold or hot. The air is kinda cool, but not cold. When I move the knob on the console from the coolest temperature up a few clicks/ halfway to moderate temperature, the air is immediately warm.

Thanks

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Tuesday, May 19th, 2009 AT 3:16 PM

DOCFIXIT

MECHANIC
18,828 POSTS

Couple thing can cause problem but without High side reading I don't know, like goning to Doctor and all he has is sistolic and no distolic he can"t say if your about to stroke out. So best guess is expansion valve faulty or blend door not operating and letting heat/outside air into evap.

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Wednesday, May 20th, 2009 AT 10:38 AM