Search found 456 matches

by Cusser
Tue Sep 10, 2019 4:06 pm
Forum: Automotive Air Conditioning Forum
Topic: Pressures Equalize Instantly
Replies: 13
Views: 763

Re: Pressures Equalize Instantly

Remember that service valve caps must be intact to seal a system - check those !!!
by Cusser
Tue Sep 10, 2019 4:04 pm
Forum: Automotive Air Conditioning Forum
Topic: Slow Leak
Replies: 2
Views: 432

Re: Slow Leak

I put a compressor on a 92 Ford van about 4 years ago. It’s came back twice out of refrigerant. The van is only driven about once a month. The only dye I see is a light dusting around the clutch and drive plate. It held vacuum at 310 microns for a couple hours this morning. I’m going to pressure te...
by Cusser
Tue Sep 10, 2019 5:53 am
Forum: Automotive Air Conditioning Forum
Topic: Pressures Equalize Instantly
Replies: 13
Views: 763

Re: Pressures Equalize Instantly

You have a leak. It is undercharged, just a few days after service. I believe its supposed to blow cold air at those pressures. While AC is on with engine idle i have around 30 psi low side and 150 psi high side Should really measure such pressures at bout 2000 rpm. At 2000 rpm at 100F, I would exp...
by Cusser
Mon Sep 09, 2019 7:59 pm
Forum: Automotive Air Conditioning Forum
Topic: Pressures Equalize Instantly
Replies: 13
Views: 763

Re: Pressures Equalize Instantly

bohica2xo wrote:You have a leak. It is undercharged, just a few days after service.


Take it back to the shop, it's covered by their warranty.
by Cusser
Sun Sep 01, 2019 7:21 am
Forum: Automotive Air Conditioning Forum
Topic: Running R12 In A R134 System
Replies: 5
Views: 122

Re: Running R12 In A R134 System

philipswanson wrote:Not illegal. But can it be done mechanically? That's the question.


With the equipment I already have at my home, I could technically fill an R134a system with R-12, and vice-versa. Without changing/converting either of the service valves.
by Cusser
Fri Aug 30, 2019 8:07 pm
Forum: Automotive Air Conditioning Forum
Topic: Running R12 In A R134 System
Replies: 5
Views: 122

Re: Running R12 In A R134 System

I'm probably wrong, but I thought that R-12 was only legal in systems originally built for R-12.

I still have an R-12 truck, but will confess that my 1998 and 2004 Frontiers and 2005 Yukon with factory R134a are really cold, and I'm in Phoenix AZ.
by Cusser
Fri Aug 30, 2019 7:20 am
Forum: Automotive Air Conditioning Forum
Topic: System pressures while filling
Replies: 3
Views: 92

Re: System pressures while filling

Disclaimer - I know a bit, but I am NOT an AC expert. I have to ask: did you read those pressures WHILE the low pressure side refrigerant valve was open to the refrigerant container? Because if so, I never pay any attention to readings unless the low pressure line is closed to the refrigerant source...
by Cusser
Fri Aug 23, 2019 6:10 am
Forum: Automotive Air Conditioning Forum
Topic: 2001 gmc yukon 1500
Replies: 4
Views: 142

Re: 2001 gmc yukon 1500

bohica2xo wrote:Fan clutches get tired. they still spin, just not very hard.


When I read the original post this morning, I also was thinking fan clutch. Just last month I replaced the fan clutch in my 1988 Mazda truck - again. These seem to last about 6 years here in Phoenix.
by Cusser
Tue Aug 20, 2019 5:50 am
Forum: Automotive Air Conditioning Forum
Topic: 1985 Nissan 720 DKV14b
Replies: 5
Views: 116

Re: 1985 Nissan 720 DKV14b

I'd get brand new compressor if available. Try board sponsor, ackits.com
by Cusser
Tue Aug 13, 2019 5:59 pm
Forum: Automotive Air Conditioning Forum
Topic: On TXV systems does compressor cycle ? Intended function of high pressure switch
Replies: 2
Views: 100

Re: On TXV systems does compressor cycle ? Intended function of high pressure switch

On my 1988 Mazda truck, and my 1998 and 2004 Nissan Frontiers - all which have expansion valve systems - the de-icer switch on the evaporator case (which has a sensor in the evaporator fins) makes their compressors cycle.

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