Search found 209 matches

by Dougflas
Fri Jun 15, 2018 5:54 am
Forum: Automotive Air Conditioning Forum
Topic: 1998 Chevy Astro Van 4.3
Replies: 2
Views: 141

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: 137

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: 7
Views: 198

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: 434

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: 434

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: 131

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.
by Dougflas
Thu May 31, 2018 6:34 pm
Forum: Automotive Air Conditioning Forum
Topic: o-ring thicknesses for VIR tubes and hoses?
Replies: 4
Views: 131

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

What year? Some GM’s used capture type o rings.Also, which connection?
by Dougflas
Thu May 31, 2018 4:53 am
Forum: Automotive Air Conditioning Forum
Topic: COLD AIR BUT SURGES WHEN DRIVING
Replies: 6
Views: 248

Re: COLD AIR BUT SURGES WHEN DRIVING

Did you use a POA elimination kit? A6 compressors were not meant to cycle on and off. GM tried that on some models and changed to the R4. R4 did not have an oil sump worth a damn so they were not a good choice. We will need high side pressures as well as low side pressures at 1500 RPM Reman'ed A6 fr...
by Dougflas
Wed May 30, 2018 10:08 am
Forum: Automotive Air Conditioning Forum
Topic: 1976 Firebird A/C HELP!
Replies: 4
Views: 166

Re: 1976 Firebird A/C HELP!

Those systems have a sight glass on the VIR so charge until the glass is clear. With your gauges connected, engine at 1200 to 1500 rpm, disconnect the blower resister, does the low side drop to approximately 30 PSI? If not, start looking at the POA inside the VIR ass'y. If Tim does not have parts fo...
by Dougflas
Thu May 17, 2018 4:44 am
Forum: Automotive Air Conditioning Forum
Topic: Replaced compressor, failed again 9 days later. Advice sought
Replies: 19
Views: 811

Re: Replaced compressor, failed again 9 days later. Advice sought

Do not forget to use the black light and glasses on the evaporator drain tube.

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