Search found 287 matches

by Dougflas
Tue May 26, 2020 8:52 am
Forum: Automotive Air Conditioning Forum
Topic: Problem understanding gauge readings
Replies: 2
Views: 60

Re: Problem understanding gauge readings

and do not rule out old leaky hoses.
by Dougflas
Sun May 24, 2020 6:21 am
Forum: Automotive Air Conditioning Forum
Topic: R4 compressor NEVER cycles
Replies: 15
Views: 196

Re: R4 compressor NEVER cycles

need to know ambient temp. if it is hot enough, the compressor will not cycle due to heat load. low airflow may cause evap to freeze. tape manifold to windshield and indicate pressures. without checking system, you may have a defective cap tube switch in the evap or it may not be in proper location.
by Dougflas
Sun May 24, 2020 1:53 am
Forum: Automotive Air Conditioning Forum
Topic: 1999 Chev Astro AC problems.
Replies: 4
Views: 472

Re: 1999 Chev Astro AC problems.

I have a complete of service manuals for a 1998 Astro van. I believe they are the same for a 1999.
I will sell them for $30.00 plus $40.00 shipping. They are complete and heavy
by Dougflas
Sat May 16, 2020 3:56 pm
Forum: Automotive Air Conditioning Forum
Topic: 1988 corvette, don't understand what it's doing?
Replies: 45
Views: 2581

Re: 1988 corvette, don't understand what it's doing?

You still need to mist the condenser with a hose. Passages may be plugged internally. Air may flow thru the outside of the condenser but not thru all the passages. I probably did not explain that. Sorry
by Dougflas
Sat May 16, 2020 3:53 pm
Forum: Automotive Air Conditioning Forum
Topic: Old Chrysler A/C
Replies: 12
Views: 907

Re: Old Chrysler A/C

This is an R12 system. You can try putting a shower cap on the compressor and let it sit. Then after a few hours, put a leak detector inside the shower cap. This system also uses an EPR valve so it is handy to have another low side gauge. I do have gaskets for that system. I would also advise you to...
by Dougflas
Sat May 16, 2020 3:38 pm
Forum: Automotive Air Conditioning Forum
Topic: 1988 corvette, don't understand what it's doing?
Replies: 45
Views: 2581

Re: 1988 corvette, don't understand what it's doing?

I personally think you're wasting your time trying to flush that condenser. Corvettes were know for having lousy AC systems to start with. To bring the high side down, mist the condenser with a water hose. If the high side drops like a rock, you have possibly an air flow problem and you're not rejec...
by Dougflas
Fri May 15, 2020 3:59 pm
Forum: Automotive Air Conditioning Forum
Topic: 1988 corvette, don't understand what it's doing?
Replies: 45
Views: 2581

Re: 1988 corvette, don't understand what it's doing?

you might want to use an infared thermometer and "shoot" the condenser in various spots to see if it is indeed plugged. As for aluminum fittings, sometimes you can drill a small hole in the nut, squirt Kroil I them and let them sit. And them use more Kroil multiple times. Praying helps.
by Dougflas
Fri May 15, 2020 6:38 am
Forum: Automotive Air Conditioning Forum
Topic: 99 silverado ac drier frosts up
Replies: 4
Views: 649

Re: 99 silverado ac drier frosts up

Please give more info as rpm (should be 1500) Max cool. doors/windows open, low side psi, high side psi, Ambient temp, humidity, vent temps, does compressor clutch stay engaged?
by Dougflas
Mon May 11, 2020 4:31 am
Forum: Automotive Air Conditioning Forum
Topic: High 'Low-Side' Pressure
Replies: 15
Views: 1163

Re: High 'Low-Side' Pressure

And being it is a Ford product, you could have a problem with a blend door.
by Dougflas
Sun May 10, 2020 6:12 am
Forum: Automotive Air Conditioning Forum
Topic: No cool at idle and smoke
Replies: 16
Views: 1618

Re: No cool at idle and smoke

You can only flush the compressor by filling and dumping the oil a few times.

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