Search found 205 matches

by bohica2xo
Thu Jul 20, 2017 9:09 am
Forum: Automotive Air Conditioning Forum
Topic: Compressor clutch sticking when de-energized
Replies: 2
Views: 68

Re: Compressor clutch sticking when de-energized

Probably best to return the compressor to the rebuilder. Be sure to tell them which refrigerant you are using.
by bohica2xo
Thu Jul 20, 2017 9:07 am
Forum: Automotive Air Conditioning Forum
Topic: Need some direction....
Replies: 13
Views: 207

Re: Need some direction....

An overcharge of oil or refrigerant can cause high head pressures.

Your original post mentions a slow decline, which absent adding anything to the system is usually a condenser problem.

If you have added materials to the system and then it changed, that is a different condition.

.
by bohica2xo
Wed Jul 19, 2017 6:19 pm
Forum: Automotive Air Conditioning Forum
Topic: Diagnostic assistance....
Replies: 8
Views: 161

Re: Diagnostic assistance....

Glad you found some junkyard parts for your car.
by bohica2xo
Tue Jul 18, 2017 9:25 pm
Forum: Automotive Air Conditioning Forum
Topic: Need some direction....
Replies: 13
Views: 207

Re: Need some direction....

425 psi is a condenser issue, not a weak compressor. Generally an airflow issue. Condensers clog deep in the fins with small debris & insects. The face can look clean & still be plugged. Wait for dark. Hang a shop light or bare bulb in the radiator shroud, and start looking straight through ...
by bohica2xo
Tue Jul 18, 2017 6:02 pm
Forum: Automotive Air Conditioning Forum
Topic: High Pressure issue R4 Compressor Chevrolet Tahoe
Replies: 11
Views: 143

Re: High Pressure issue R4 Compressor Chevrolet Tahoe

If the fans don't run with the compressor it is not right. You can let it ride the HPCO until they do, but eventually that will cost money. The 1994 trucks all had mechanical clutch fans. Fix the electrical error that is keeping the fans from starting with the A/C compressor command as GM intended. ...
by bohica2xo
Tue Jul 18, 2017 5:53 pm
Forum: Automotive Air Conditioning Forum
Topic: Parallel or Serpentine Condenser
Replies: 6
Views: 127

Re: Parallel or Serpentine Condenser

So the compressor was not seized? Just the clutch bearing?

.
by bohica2xo
Tue Jul 18, 2017 10:35 am
Forum: Automotive Air Conditioning Forum
Topic: High Pressure issue R4 Compressor Chevrolet Tahoe
Replies: 11
Views: 143

Re: High Pressure issue R4 Compressor Chevrolet Tahoe

Condenser airflow issue.

Fan type?
by bohica2xo
Tue Jul 18, 2017 9:13 am
Forum: Automotive Air Conditioning Forum
Topic: Parallel or Serpentine Condenser
Replies: 6
Views: 127

Re: Parallel or Serpentine Condenser

Wow. There should have been 500cc's or 16 ounces of oil in that sump. The first question is Where did that oil go? As far as a compressor only replace, we will need more info for that decision. How many hours on the truck? A/C used how many months out of the year? How many evaporators on the truck? ...
by bohica2xo
Sun Jul 16, 2017 10:17 am
Forum: Automotive Air Conditioning Forum
Topic: Parallel or Serpentine Condenser
Replies: 6
Views: 127

Re: Parallel or Serpentine Condenser

We have some people here on the forum with class 8 truck experience, may take a couple of days for them to chime in. That TM31 compressor is a pretty tough unit - it almost had to run out of oil somehow to seize. It has a sight glass on the oil sump too. I have dealt with a few on motorhomes. Genera...
by bohica2xo
Sat Jul 15, 2017 4:05 pm
Forum: Automotive Air Conditioning Forum
Topic: Diagnostic assistance....
Replies: 8
Views: 161

Re: Diagnostic assistance....

If your Ion has no fans, it is missing essential parts. Here is what you are looking for: http://www.rockauto.com/en/moreinfo.php?pk=887283&cc=1433712&jsn=337 Depending on the engine, it may have the CVC compressor - which is variable displacement, and can exhibit all sorts of symptoms. YEAR...

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