Automotive Air Conditioning Information Forum

At first you mentioned that the compressor *is* engaging, then later you mentioned that the compressor actually *isn't* engaging. I'm confused.

If you're going to convert the car from R-12 to R-134a, you'll be better served, in my humble opinion, by replacing the serpentine-style OE condenser with the largest parallel-flow condenser that will fit. If you go with a modern PF condenser, you should be able to make up the hoses or lines (or ...

If I understand correctly, you replaced the battery, now the A/C compressor won't engage. Before doing anything further, scan the vehicle for Diagnostic Trouble Codes (DTC's), or have it done. Clear the codes, and you'll probably find that the A/C system works again.

If it doesn't, the system might ...

Thanks, Tim. The same to you and yours and to everyone on the Forum.

Okay, good.

I recommend leaving the '00 Silverado Dually alone until you get the '99 Yukon A/C system running well.

Does the A/C work in the Dually?

Thanks for the additional specs. After 26 years and a misplaced orifice tube, who knows if that accumulator is original. I'm guessing it is because the decal is a GM decal. I'll charge to that spec and report back on temps and pressures. I wonder if there was a TSB or other guidance from GM to ...

Interesting that in the *GPD Refrigerant & Oil Guide* that Tim posted in the Automotive Air Conditioning Procedures, Tips and FAQ sub-forum shows the same specs that I posted yesterday, which was 64 ounces net weight (4 pounds) of R-134a, and 11 fluid ounces of PAG-150. Regardless, I would still go ...

In my humble opinion, the single-case design of the 4440 (SD7H15) is superior to the multi-case design of the HT6. Check carefully, but I believe the Sanden should bolt right up.

Sounds good about the OT.

The OEM specifications that I have for your vehicle are as follows: 64 ounces net weight of R ...

Issue #1. No charge at all in the system. Had to go somewhere so I pressurized the system with nitrogen up to 200 psi and went on the hunt. Could not hear anything but then a slight air noise by compressor. foamed it with soapy water spray and it bubbled and foamed from every joint on the HT6 ...

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