Search found 617 matches

by bohica2xo
Sat Jul 20, 2019 8:58 am
Forum: Automotive Air Conditioning Forum
Topic: 2006 Saturn Vue cooling at idle
Replies: 10
Views: 79

Re: 2006 Saturn Vue cooling at idle

The sensor is on the high side line someplace. AC Delco part number 1551343

Again, a Mitchell subscription can be a big help. You can screen shot the wiring diagrams & save them, that alone is worth the $20 charge

https://eautorepair.net/Marketing/Default.asp
by bohica2xo
Fri Jul 19, 2019 4:53 pm
Forum: Automotive Air Conditioning Forum
Topic: A/C Compressor Clutch
Replies: 5
Views: 42

Re: A/C Compressor Clutch

No friction material. Metal on metal.

Be sure to set the gap correctly when you reassemble it.
by bohica2xo
Fri Jul 19, 2019 2:32 pm
Forum: Automotive Air Conditioning Forum
Topic: 2006 Saturn Vue cooling at idle
Replies: 10
Views: 79

Re: 2006 Saturn Vue cooling at idle

The high side is a 3 wire pressure transducer that feeds high side pressure information to the PCM. The PCM makes the fan speed decision. It is not a simple switch, and is not adjustable. It is a 5 volt input, with a 1 to 4.5v output. The sensor could be bad, or the wiring to the sensor. The high si...
by bohica2xo
Fri Jul 19, 2019 8:33 am
Forum: Automotive Air Conditioning Forum
Topic: 2006 Saturn Vue cooling at idle
Replies: 10
Views: 79

Re: 2006 Saturn Vue cooling at idle

Many times someone has a vehicle for a few months, and has no history on it. Since you have owned it for a long time, you know that this is a new issue. You replaced the entire system - was there a reason to go after the Evaporator? Your radiator fans would be the logical place to start. I believe t...
by bohica2xo
Thu Jul 18, 2019 9:09 am
Forum: Automotive Air Conditioning Forum
Topic: 2006 Saturn Vue cooling at idle
Replies: 10
Views: 79

Re: 2006 Saturn Vue cooling at idle

The fans should change speed depending on cooling load. This is normally decided by refrigerant pressure & ambient temperature. A few questions: Have you owned this car since it was new? When was the last time you changed the cabin air filter? Are there some clicking or popping sounds from the d...
by bohica2xo
Tue Jul 16, 2019 7:54 pm
Forum: Automotive Air Conditioning Forum
Topic: V5 Compressor Question
Replies: 6
Views: 68

Re: V5 Compressor Question

It depends on the overall condition of the compressor when it comes to the case O ring. If it has lived it's life in a wet corrosive environment like salted roads, it is probably a belly leaker. If it is an Arizona car it is less likely to have that issue. Here is the teardown for that job: https://...
by bohica2xo
Thu Jul 11, 2019 9:30 pm
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

Any positive displacement pump is variable output by changing the RPM The electrically commutated PMDC motors are fairly efficient over a broad speed range. So there is no need to use a variable displacement compressor with a variable speed motor. A little Sanden with a direct drive (no belt losses)...
by bohica2xo
Tue Jul 09, 2019 6:10 pm
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

Use a similar sized valve - forgot about the external equalization. Unless you live in some remote spot, there is an industrial hose shop somewhere nearby. The Aeroquip stuff works well, but you need to use the whole system - hose, fittings & tool Some odd MVAC fittings are not available from Ae...
by bohica2xo
Mon Jul 08, 2019 3:46 pm
Forum: Automotive Air Conditioning Forum
Topic: Old R12 System
Replies: 4
Views: 405

Re: Old R12 System

If you had both service valves closed during testing, then yes the high side is too low for a good compressor.

Given that you have a POA valve, this is probably an A6 compressor?

Year / Make / Model would be a big help in helping you diagnose this system
by bohica2xo
Mon Jul 08, 2019 3:42 pm
Forum: Automotive Air Conditioning Forum
Topic: 1979 Lincoln R12 System - Blows colder at idle
Replies: 3
Views: 297

Re: 1979 Lincoln R12 System - Blows colder at idle

I believe the 1979 Mark V still had a POA valve on the low side. The low side should remain steady, and around 30 psi. That heater valve was a great idea 40 years ago. They are subject to the ravages of age, and poorly maintained cooling systems. Since it is 105f here in Las Vegas right now I would ...

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