A/C Code 66 (low freon) at speed, but not at idle.
#1
A/C Code 66 (low freon) at speed, but not at idle.
Getting a code 66 (low freon) on my 1992 Regency Elite after conversion from R12 to R134a. Pressure is good, so I replaced the a/c pressure switch on the accumulator suspecting it to be the culprit. Car can site at idle for 30+ minutes, 60 degrees max fan, without an issue and compressor cycling at 10 secs on, 2 off. But as soon as you drive away within a mile it will gen a code 66 again. Been through AllData without any progress. Any comment would be appreciated.
#2
This is an issue on GM cars with EATC that are retrofitted to R-134a. You will have to add a resistor across one of the system switches, I don't recall the details, but if you post the question on http://www.autoacforum.com/ , they are quite familiar with this concern.
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July 6th, 2012 06:45 AM