Search found 238 matches

by Dougflas
Mon Jul 08, 2019 4:57 am
Forum: Automotive Air Conditioning Forum
Topic: Building a custom R134a system for 1985 square body Blazer
Replies: 9
Views: 396

Re: Building a custom R134a system for 1985 square body Blazer

If you use a TXV, you need to use a drier and not an accumulator. The locations in the system are totally in different places.
by Dougflas
Sun Jun 30, 2019 3:44 pm
Forum: Automotive Air Conditioning Forum
Topic: System Evacuation Question
Replies: 1
Views: 462

Re: System Evacuation Question

When you apply a vacuum, you are boiling off the moisture. You can not measure this unless you use a micron gauge. Your manifold gauge will indicate -29 ish but a micron gauge will indicate how much vacuum you're actually pulling. I suggest watching some You tube videos on pulling a vacuum.
by Dougflas
Thu Jun 27, 2019 1:48 pm
Forum: Automotive Air Conditioning Forum
Topic: R134a port adapter: leaks and questions
Replies: 9
Views: 1151

Re: R134a port adapter: leaks and questions

Actually ALL hoses must have a low loss fitting at it's end.
by Dougflas
Thu Jun 27, 2019 9:52 am
Forum: Automotive Air Conditioning Forum
Topic: R134a port adapter: leaks and questions
Replies: 9
Views: 1151

Re: R134a port adapter: leaks and questions

Answer appears to be: yes this works. When charging R12 is there any means of stopping the remaining refrigerant in the manifold hose from discharging to atmosphere when you unthread it from the suction port? Not without a low loss adaptor that shuts the hose off. Harbor Freight is like a Nest ther...
by Dougflas
Tue Jun 25, 2019 6:47 am
Forum: Automotive Air Conditioning Forum
Topic: AC low pressure not pulling down.
Replies: 2
Views: 558

Re: AC low pressure not pulling down.

a 30 minute vacuum does not do squat as far as a vacuum. If you do not have a micron gauge, leave the pump on it for a few hours. Your compressor is a scroll type and probably has a control valve in it. The compressor may be in a de=stroked position due to a stuck control valve.
by Dougflas
Fri Jun 07, 2019 2:34 am
Forum: Automotive Air Conditioning Forum
Topic: Land Rover Defender High side Too High
Replies: 1
Views: 501

Re: Land Rover Defender High side Too High

mist the condenser with a water hose. If high side drops rapidly, there may be an air flow across the condenser or the condenser is not doing its job problem.
by Dougflas
Tue May 14, 2019 5:15 pm
Forum: Automotive Air Conditioning Forum
Topic: New Motorcraft compressor, clutch wouldn't turn by hand, squealed after installation
Replies: 17
Views: 2310

Re: New Motorcraft compressor, clutch wouldn't turn by hand, squealed after installation

If the evaporator lines are not cold, you have a refrigeration issue. I have run across this once before on an add on system. The drier was installed in reverse. I am not saying this is your problem but it is something to keep in mind. Without pulling up your vehicle, you may have a defective TXV Ha...
by Dougflas
Tue May 14, 2019 2:59 am
Forum: Automotive Air Conditioning Forum
Topic: New Motorcraft compressor, clutch wouldn't turn by hand, squealed after installation
Replies: 17
Views: 2310

Re: New Motorcraft compressor, clutch wouldn't turn by hand, squealed after installation

I did not read all of your notes. Let's start over. Run vehicle at 1500 RPM, doors /windows open. Set system on max cool. After 15 minutes. is the input and output tubes of front evaporator cold and about the same temps? If so, the front cooling/refrigeration system is working. Start looking at air ...
by Dougflas
Sat May 04, 2019 4:57 pm
Forum: Automotive Air Conditioning Forum
Topic: V5 control valve
Replies: 8
Views: 1059

Re: V5 control valve

That is an excellent price on a new compressor.
by Dougflas
Sat May 04, 2019 3:40 am
Forum: Automotive Air Conditioning Forum
Topic: V5 control valve
Replies: 8
Views: 1059

Re: V5 control valve

X2 what GM said. I have used Nylog on the o rings before reass'y. But I have had a couple not work and used a replacement.

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