1996 Volkswagen Jetta AC NOT COLD

JOE BAKER

MEMBER
1996 VOLKSWAGEN JETTA

Air Conditioning problem
1996 Volkswagen Jetta 4 cyl Front Wheel Drive 88000 miles

AC NOT COLD, DUCT TEMP 70 DEGREES, REPLACED, EXPANSION VALVE, DRYER AND COMPRESSOR. ALSO FOUND THAT THE HOSES ARE BOTH HOT. IF THE HEATER HOSES ARE PINCHED OFF, AC DUCT TEMP GOES DOWN TO 60 DEGREES. CHECK BLEND DOOR AND CABLE ADJ. OK

4 Replies

BILLYMAC

MECHANIC
2,204 POSTS

Hi. What is the pressure on high and low side?

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Monday, August 17th, 2009 AT 4:06 PM

BILLYMAC

MECHANIC
2,204 POSTS

HI Joe
I was asked by Mike from 2carpros to try and help with your a/cprob. I have an idea what is going on but need to know the pressures of your a/c system.

If you could reply with this info if you have it I will be happy to help.

Billymac

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Tuesday, August 18th, 2009 AT 11:52 AM

JOE BAKER

MEMBER
2 POSTS

HIGH SIDE READS 150 /LOW SIDE 50
OUTSIDE TEMP IS 92 DEGREES, AC LINES ARE COOL

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Tuesday, August 18th, 2009 AT 12:44 PM

BILLYMAC

MECHANIC
2,204 POSTS

Hi. Well pressure is great system is working normally. This means the evaporator is cold, the only prob is
you should have fan air blowing only across evap and not heater core. But what you have is fan blowing across both, which means the blend door is not doing it, s job. If the door is working properly then a flap or gasket or something is stopping the fan air from only blowing across the evap this car should have a heater valve in the heater hose make sure this is shutting down the coolant while the air is on. There may be some paper or other obstructions blocking the evaporator. You may need to tear into the heat ac distribution box to find this prob.
Billymac

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Tuesday, August 18th, 2009 AT 3:22 PM