I did some digging around when you mentioned the cut-off switch. I’ve found it does apparently have one but I’m struggling to figure it out. I read somewhere else that it’s likely to be on the drier (accumulator?) and after I pulled a cap off I found two electrical spade type connectors, which I’m ...

Finally got back to this car. Recovered and recharged to oem level. No help, still poor cooling. Pulled orifice and it looks like this. Not a good sign, this is going to be entire system as John described? Based on the look of the OT, I'm not surprised that the cooling performance is poor. Little t...

A red refrigerant dye (NOT with stop leak) that FJC describes as "visual" is available. It's not fluorescent, and it doesn't glow brightly like the greenish yellow dye does using a UV light and special eyeglasses in a darkened shop. It might be sufficient for your purposes, though.

Most of what you'll find for MVAC systems is the greenish yellow or green fluorescent dye, and sometimes but rarely, fluorescent red. The much better option IMHO is a decent-quality "sniffer"--electronic leak detector--that can sense even minute refrigerant leaks that the dye won't show. W...

Seems to me the refrigerant continues to leak out, shutting down the compressor. I don't think heating-up the car had anything to do with it. Hopefully, there was no sealer in the refrigerant can you put in. Sealer can destroy a system right quick. I suggest not jumping the clutch to force-engage th...

Do you have a High Pressure Cut-Off and/or a Low Pressure Cut-Off switch (or a binary or trinary switch) installed? If the answer is yes, you can safely drive the vehicle regardless of whether the A/C system is turned on or off because the compressor won't engage anyway if the refrigerant is low or ...

it has 90K With 90,000 miles on the clock, the A/C system probably would benefit from a new compressor, along with a new OT and accumulator, which contains a desiccant. On a 2005 LeSabre it has poor cooling performance. At 80deg ambient, vent temp at 72deg. Low side is 55-60, high side 170. Thought...

Is it possible there to much "gas" in the system vs liquid refrigerant? It's a sanden compressor, maybe its bad yet again? thanks for any help. Was this system converted from R-12 to R-134a? I doubt that it's the compressor failing. When you hear that hissing sound, it usually means that ...

Remember that whenever you attach your Manifold Gauge Set (MGS) to a system, you lose some amount of refrigerant that (when you disconnect the MGS) remains in the hoses. How much depends on the length of the hoses, and also how much remains in the gauges and the manifold itself, if any. With a compa...

I agree with Tim.

Although the compressor might be "tired," pressures can often throw you off with a variable-displacement compressor. Best to weigh-in the OEM-specs charge first, then see how it performs.

How many miles on this car?