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Old 04-17-2002, 08:14 AM
Registered User
Join Date: Apr 2002
Location: Connecticut
Posts: 61
Question 300 SEL No cold air

Hi everyone,
Recently had system converted to r134 including replacing compressor.
System is fully charged the compressor comes on the high and low pressure looks good but only ambient temp air comes out of the vents and compressor kicks off after a couple of minutes. Had a garage look at it and said this is a job for a benz dealer probably some sensor.
I would like to try to trouble shoot this before I subject myself to the mercy of the dealer.
Is there any sensor that I can jump or bypass to trouble shoot this myself.

Any help would be appreciated.

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Old 04-17-2002, 10:44 AM
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Join Date: Dec 2001
Posts: 571
If you hired someone to convert it, make them fix the problem. Many people have successfully migrated from R-12 to R-134A. If it's not cooling, the installation and/or materials used are flawed in some way.

I cannot guarantee you that 134 will cool down to the same temp. as R-12, but from what you've presented here, it sounds like something is way off.
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