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What would cause my a/c to stop blowing cold air? It blows ...

Sent to Car Experts July 07, 2006 5:01 p.m.

What would cause my a/c to stop blowing cold air? It blows hot then cold...stays like that for a little while and then blows cold again... then blows hot again...I bought a guage from AutoZone and it shows 48 to 50 psi in the a/c system...I have a 2001 Chevy Silverado...305 V8

Optional Information:
2001 Chevrolet Silverado 305 v8

Already Tried:
checked the a/c system for freon pressure...indicated 48 to 50 psi with outside temp at 87 deg F...

Customer (name blocked for privacy)

Status: Closed Value: $8

Info Request
July 07, 2006 6:13 p.m. (1 hour and 11 minutes later)

REPLIED to Info Request

Does your gauge only check pressure on one line? Is this the pressure while the compressor is running?

BOBBY -- Technician/ Service Advisor -- 100% Positive Feedback on 997 Car Accepts
ASE MASTER CERTIFIED, CALIFORNIA EPA AIR CONDITIONING CERTIFIED, AA DEGREE AUTOMOTIVE/DIESEL TECH

Reply to BOBBY
Sent July 10, 2006 12:06 p.m. (2 days and 17 hours later)

Yes, this pressure is while the compressor is running and the a/c setting is on "high" inside the cab.

Yes, this the low-pressure line guage reading only.

Also, the a/c doesn't cut out, when I run it on "high" (level 4 or 5) on the dash controls.

Thanks!

Customer (name blocked for privacy)

Answer
July 10, 2006 1:59 p.m. (1 hour and 52 minutes later)

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BOBBY -- Technician/ Service Advisor -- 100% Positive Feedback on 997 Car Accepts
ASE MASTER CERTIFIED, CALIFORNIA EPA AIR CONDITIONING CERTIFIED, AA DEGREE AUTOMOTIVE/DIESEL TECH

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