Search found 1104 matches

by Tim
Tue May 09, 2023 7:29 am
Forum: Automotive Air Conditioning Forum
Topic: No A/C then sudden perfect a/c after as much as hour
Replies: 5
Views: 1073

Re: No A/C then sudden perfect a/c after as much as hour

In this case meter shows a/c fully charged when a/c is blowing cold. I don't trust Mr. "AC Pro". Need a real set of gauges on it and know for sure on the amount of refrigerant in the systems. That is how all proper repairs start. A leak test prior to recovery and recharge should be done.
by Tim
Fri Apr 28, 2023 7:36 pm
Forum: Automotive Air Conditioning Forum
Topic: Compressor clutch stays on?
Replies: 5
Views: 1103

Re: Compressor clutch stays on?

Best to use a scan tool and check for trouble codes. Get a wiring diagram and trace power routes.
by Tim
Thu Apr 27, 2023 5:16 am
Forum: Automotive Air Conditioning Forum
Topic: Compressor clutch stays on?
Replies: 5
Views: 1103

Re: Compressor clutch stays on?

Condition Possible Causes Correction Constant A/C compressor engagement and warm air from passenger vents 1. Low refrigerant system charge 1. See Refrigerant System Leaks in this group (Refer to 24 - Heating and Air Conditioning/Plumbing/Diagnosis and Testing) . Test the refrigerant system for leaks...
by Tim
Mon Apr 24, 2023 10:48 am
Forum: Automotive Air Conditioning Forum
Topic: Battling leak at suction/discharge connection at compressor
Replies: 8
Views: 1193

Re: Battling leak at suction/discharge connection at compressor

Weld or something causing the line to vibrate too much, creating a crack over time. I have seen this a lot over the years with transverse engines.
by Tim
Fri Apr 21, 2023 7:27 am
Forum: Automotive Air Conditioning Forum
Topic: How to test EPR (evaporator pressure regulator)
Replies: 14
Views: 6879

Re: How to test EPR (evaporator pressure regulator)

I'll bite.

What's your plan to double the condenser size on a 1999 Lexus LS400?
by Tim
Fri Apr 21, 2023 6:43 am
Forum: Automotive Air Conditioning Forum
Topic: 1986 Corvette R-12 to R-134a Conversion
Replies: 104
Views: 13122

Re: 1986 Corvette R-12 to R-134a Conversion

I have my popcorn and waiting to see you get sub 200PSI on a vette with an ambient over 90!
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by Tim
Thu Apr 20, 2023 11:35 am
Forum: Automotive Air Conditioning Forum
Topic: 1986 Corvette R-12 to R-134a Conversion
Replies: 104
Views: 13122

Re: 1986 Corvette R-12 to R-134a Conversion

We're talking about a Vette here with an accumulator. The inlet and outlet on the evap should be close in temp. So charge to 80% and feel the difference. Slowly add more until they feel the same.
by Tim
Wed Apr 19, 2023 7:08 pm
Forum: Automotive Air Conditioning Forum
Topic: 1986 Corvette R-12 to R-134a Conversion
Replies: 104
Views: 13122

Re: 1986 Corvette R-12 to R-134a Conversion

The higher capacity listing is most likely for an A6 compressor, which this does not have. Also, there is or was enough refrigerant to engage the clutch if "All" the electrical was operating correctly. Jumping the clutch coil only provides data for a single system component. The data I pos...
by Tim
Wed Apr 19, 2023 1:10 pm
Forum: Automotive Air Conditioning Forum
Topic: 1986 Corvette R-12 to R-134a Conversion
Replies: 104
Views: 13122

Re: 1986 Corvette R-12 to R-134a Conversion

tbirdtbird wrote: Wed Apr 19, 2023 1:07 pm If you do the math, Tim's data shows charge to be 2.25 lbs, and your service center (? a brake shop) installed 1.8 lbs).
The data I posted is from ALL data, OE charge.