Search found 193 matches
- Sun May 21, 2017 8:31 am
- Forum: Automotive Air Conditioning Forum
- Topic: 1998 Chevy K2500 5.7L
- Replies: 4
- Views: 6305
Re: 1998 Chevy K2500 5.7L
Cycling is dependent on heat load across evaporator- so to see it cycle, open hood, reduce blower motor speed to lowest speed and make sure it is on recirc air inside- wait about 10 minutes- it should cycle eventually.
- Sat May 20, 2017 8:45 pm
- Forum: Automotive Air Conditioning Forum
- Topic: Oil for seals?
- Replies: 4
- Views: 6852
Re: Oil for seals?
I worked for Delphi- the compressor supplier to GM for many years- we always used mineral oil on all o-ring joints and threaded connection- with both R-12 and R134a applications. The assembly plants did likewise. The small amount used would never cause an issue with the integrity of a 134a system. H...
- Sat May 20, 2017 8:39 pm
- Forum: Automotive Air Conditioning Forum
- Topic: 1998 Chevy K2500 5.7L
- Replies: 4
- Views: 6305
Re: 1998 Chevy K2500 5.7L
Uhm- that would be the high pressure cut-out switch- that will shut down the compressor at 425 psi head pressure to avoid blowing the pressure relief valve at 500 psi. It is a normally closed switch, system will not run without it plugged in- it opens upon high pressure and closes again at about 250...
- Sat May 20, 2017 4:38 am
- Forum: Automotive Air Conditioning Forum
- Topic: Oil for seals?
- Replies: 4
- Views: 6852
Re: Oil for seals?
I use mineral oil- have for 30 years- with no issues.
- Thu May 04, 2017 5:09 pm
- Forum: Automotive Air Conditioning Forum
- Topic: 2002 GMC Sierra 5.3 AC wont stay on
- Replies: 2
- Views: 4959
Re: 2002 GMC Sierra 5.3 AC wont stay on
What you describe is a very common failure mode- next time it quits cooling when you know it should be on, let engine running, pop hood and look at front of compressor, is it turning? Here is a cut and paste from previous post like yours Next time it is blowing hot and it should be cool-- stop, pull...
- Thu Mar 23, 2017 5:30 am
- Forum: Automotive Air Conditioning Forum
- Topic: 07 Chevy HHR Low Side Service Port
- Replies: 4
- Views: 7558
Re: 07 Chevy HHR Low Side Service Port
Does it show the leak with the cap on? To test my leak detector- I take the cap off.
- Sun Mar 19, 2017 2:22 pm
- Forum: Automotive Air Conditioning Forum
- Topic: Ford F-250 A/C blows cold then hot
- Replies: 3
- Views: 6133
Re: Ford F-250 A/C blows cold then hot
Is compressor nose (front end) turning when it starts blowing hot?
- Sun Mar 05, 2017 9:15 am
- Forum: Automotive Air Conditioning Forum
- Topic: Stumped - incessant cycling and pressures all out of whack (video included)
- Replies: 3
- Views: 6476
Re: Stumped - incessant cycling and pressures all out of whack (video included)
Keep in mind, that a a/c system with a variable stroke compressor that cycles frequently is because of of high pressure cut-outs- most likely- high head pressure is usually due to lack of air flow through condenser, or blocked condenser, --so do your cooling fans work? - your head pressure you see o...
- Wed Dec 07, 2016 6:40 am
- Forum: Automotive Air Conditioning Forum
- Topic: Lack of pag oil in compressor
- Replies: 8
- Views: 11474
Re: Lack of pag oil in compressor
On V-7 variable displacement compressors as is yours- oil should be drained/added through the oil drain bolt/plug on the side of the compressor. There are three pressure zones, suction, discharge, and crankcase- there is at any given time a reservoir of 3 fl ozs in the crankcase. Your new compressor...
- Wed Oct 12, 2016 5:54 pm
- Forum: Automotive Air Conditioning Forum
- Topic: 2011 Ram Compressor not kicking on
- Replies: 9
- Views: 15258
Re: 2011 Ram Compressor not kicking on
you have about 5% of needed refrigerant in your system--- find your leak..fcix it, evacuate and recharge to factory spec compressor will come on when you put in the right amount of refrigerant.