Search found 156 matches

by GM Tech
Sat Jun 25, 2016 5:15 am
Forum: Automotive Air Conditioning Forum
Topic: Running A6 without oil
Replies: 3
Views: 2545

Re: Running A6 without oil

A-6s have an oil sump and pump guilt in- do you think there was any oil in it? You can pull drain plug to see. As long as it still turns, there is hope- they typically have a thermal fuse that will blow and shut them off if body gets too warm--- did body get too hot to touch? They are pretty tough- ...
by GM Tech
Thu Jun 23, 2016 6:15 am
Forum: Automotive Air Conditioning Forum
Topic: Need AC advice for 2000 Silverado
Replies: 11
Views: 6329

Re: Need AC advice for 2000 Silverado

Whoa Nelly!!! Your first clue is your static pressure!!!! Low Side 35.5 to 40.0 (116 in Hg) High Side 35.5, 8 Bar, (115 in Hg) You should read at least 80-90 psi at 80-90 degree ambient!!! and nearly 110 psi at 107 degree ambient- (it runs real close to temp variation) 35 is wayyyy to low- unless it...
by GM Tech
Tue Jun 21, 2016 7:14 pm
Forum: Automotive Air Conditioning Forum
Topic: Odd restriction problem...need another perspective
Replies: 2
Views: 2214

Re: Odd restriction problem...need another perspective

How's your airflow inside the car from the vents? A 93 H-car was notorious for evaporator leaks where the oil leached out onto the air inlet face of evap and then dirt and debris would plug up the air flow path, causing huge inefficiencies, as well as a loss of refrigerant. I personally changed doze...
by GM Tech
Wed Jun 01, 2016 6:00 am
Forum: Automotive Air Conditioning Forum
Topic: AC problem 2003 Chevy Silverado
Replies: 2
Views: 2320

Re: AC problem 2003 Chevy Silverado

How do you know "coolant" (refrigerant) is fine? Is static pressure above 47 psi? If so, and relay is not energizing, then problem is most likely an input to the ECM is not happy. So the two primary inputs are the low pressure cycling (evap freeze protection) switch on accumulator, and the...
by GM Tech
Thu May 12, 2016 5:24 am
Forum: Automotive Air Conditioning Forum
Topic: 2004 Silverado AC works for 10 minutes, but once cycles off will not cycle back on! Help please!
Replies: 3
Views: 2991

Re: 2004 Silverado AC works for 10 minutes, but once cycles off will not cycle back on! Help please!

No codes get set for relay problems or air gap too wide issues on the C/K platform. Very, very common for wide air gap- I've done maybe 4 or 5 a season for that era truck. Remove a shim and get another 100k miles out of compressor.
by GM Tech
Tue May 10, 2016 4:26 pm
Forum: Automotive Air Conditioning Forum
Topic: Ac troubleshooting
Replies: 9
Views: 6371

Re: Ac troubleshooting

Never seen a gauge with a kit measure the high side only---they measure low side, and when you say there is too much pressure- I can only assume this is with a/c off- since code 66 disables the compressor. and you are merely measuring static suction pressure which would be "in the red" if ...

Go to advanced search