Search found 213 matches

by Dougflas
Thu Oct 18, 2018 1:35 pm
Forum: Automotive Air Conditioning Forum
Topic: Resurrecting 1970 GM AC with POA
Replies: 24
Views: 9332

Re: Resurrecting 1970 GM AC with POA

There is currently moisture in the system. Pulling a vacuum will boil it off. Put some refrigerant in the system at this point. you want the system to be pressurized.
by Dougflas
Thu Oct 18, 2018 5:08 am
Forum: Automotive Air Conditioning Forum
Topic: Resurrecting 1970 GM AC with POA
Replies: 24
Views: 9332

Re: Resurrecting 1970 GM AC with POA

Evacuate the system and put a little refrigerant in the system. You do not want the system to be at negative pressure.
by Dougflas
Sat Sep 29, 2018 6:26 am
Forum: Automotive Air Conditioning Forum
Topic: Can't find leak on R134 conversion - tried UV and Sniffer
Replies: 5
Views: 3223

Re: Can't find leak on R134 conversion - tried UV and Sniffer

Leaks can be evasive at times. Try sniffing the drain tube after the vehicle was running, put a plastic bag around the front of the compressor. The size of your leak should not be that difficult finding. Do not put your sniffer at the opening of a can of refrigerant. Too much refrigerant will trip i...
by Dougflas
Sat Sep 29, 2018 6:09 am
Forum: Automotive Air Conditioning Forum
Topic: Resurrecting 1970 GM AC with POA
Replies: 24
Views: 9332

Re: Resurrecting 1970 GM AC with POA

I have not been here in a while due to computer issues. I probably have OEM fittings if you need some. Also. I see your questions have been answered. As far as oil capacity, remember the only component that requires oil is the compressor. The OEM compressor required about 11 oz of mineral oil if mem...
by Dougflas
Fri Jun 15, 2018 5:54 am
Forum: Automotive Air Conditioning Forum
Topic: 1998 Chevy Astro Van 4.3
Replies: 2
Views: 380

Re: 1998 Chevy Astro Van 4.3

I had a 1998 Astro van with front and rear evaporators that you could hang meat in it. I have a set of the factory manuals on this vehicle if you're interested. They are in super clean condition. They have all wiring, unit repair, etc Email d k t v at aol. com
by Dougflas
Fri Jun 15, 2018 5:44 am
Forum: Automotive Air Conditioning Forum
Topic: Problem with testing polarity on A/C clutch coil
Replies: 5
Views: 474

Re: Problem with testing polarity on A/C clutch coil

The black band on the diode should face the ground.
by Dougflas
Fri Jun 15, 2018 5:35 am
Forum: Automotive Air Conditioning Forum
Topic: 1967 Catalina AC Help/Advice
Replies: 19
Views: 1432

Re: 1967 Catalina AC Help/Advice

You may have hot air passing around the evaporator due to the vehicle being a 1967 (51 years old) and the rubber gaskets inside the evaporator box being bad. Bypass the heater and see if the vent temps drop. To test the POA on vehicle, kill the blower motor. At 1200 to 1500 rpm, the low side should ...
by Dougflas
Fri Jun 08, 2018 12:44 pm
Forum: Automotive Air Conditioning Forum
Topic: AC blows cool instead of cold
Replies: 11
Views: 1242

Re: AC blows cool instead of cold

I think those vehicles had control valves for the V5 compressor.
by Dougflas
Thu Jun 07, 2018 12:45 pm
Forum: Automotive Air Conditioning Forum
Topic: AC blows cool instead of cold
Replies: 11
Views: 1242

Re: AC blows cool instead of cold

AC system not activated. Compressor not engaged
by Dougflas
Sun Jun 03, 2018 8:03 am
Forum: Automotive Air Conditioning Forum
Topic: o-ring thicknesses for VIR tubes and hoses?
Replies: 4
Views: 468

Re: o-ring thicknesses for VIR tubes and hoses?

Just measured mine from my kit. Use the .070 size. Good luck on installing a VIR in a 1973 Vette. Make sure the top of the VIR is in the correct orientation. You may want to use a SMALL amount of Never Seize on the threads.

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