100+ PSI on Low Pressure Side of A/C

[Rob Bell]

Re: 100+ PSI on Low Pressure Side of A/C

Are you just using the stop leak, or the R134A with the seal conditioner? Use the R134A with the seal conditioner first. Most of the time it's a leaky seal on the compressor pulley shaft. The seal conditioner works wonders. I recently did an R12 to R134A conversion on my beater by myself, and so far the A/C is working great.

[KennyD]

Re: 100+ PSI on Low Pressure Side of A/C

Well I added 3oz of stop leak and also 134a with o-ring conditioner and sealer. When I added the big can, the compressor engaged. Started cooling the car interior. Well, this lasted only a day, and now the pressure is low again. Looks like its compressor swap time.

[Firebirdkid96]

Re: 100+ PSI on Low Pressure Side of A/C

Well I added 3oz of stop leak and also 134a with o-ring conditioner and sealer. When I added the big can, the compressor engaged. Started cooling the car interior. Well, this lasted only a day, and now the pressure is low again. Looks like its compressor swap time.

sounds accurate

[Rob Bell]

Re: 100+ PSI on Low Pressure Side of A/C

Before you go swapping compressors, run some of that leak detecting dye through it to make sure. If it leaked out after only a day, it could be a leak in the condenser or evaporator. It seems like leaky compressor seals take longer.

If there is still freon in the system and it's just low, then yes, it probably is a compressor seal. When they are weak, they allow some of the gas to escape until it gets to a point where they can hold in the remainder.

[nascar24jd]

Re: 100+ PSI on Low Pressure Side of A/C

You need to add enough R134a to get the compressor to turn on and then you can check the actual pressure.

[Firebirdkid96]

Re: 100+ PSI on Low Pressure Side of A/C

Before you go swapping compressors, run some of that leak detecting dye through it to make sure. If it leaked out after only a day, it could be a leak in the condenser or evaporator. It seems like leaky compressor seals take longer.

If there is still freon in the system and it's just low, then yes, it probably is a compressor seal. When they are weak, they allow some of the gas to escape until it gets to a point where they can hold in the remainder.

My Compressor clutch seal leaked a full charge in fifteen minutes.

I agree that he should run a leak detector through it, but if he used o-ring conditioner, that should've had it in it.

[Rob Bell]

Re: 100+ PSI on Low Pressure Side of A/C

Not all of the R134A cans have both dye and O Ring conditioner in them. Since he already put in the O ring conditioner and it did not work, then the next step is to get a can with the dye in it and run that through. A/C parts are very expensive, he has to be absolutely sure he's replacing the right part.

As an update to my earlier post, my beater's A/C did eventually leak back down. It took a while though. I put a can of R134A with dye in it the other day and will be watching to see what happens. A replacement compressor for my car is about $280 if that ends up being the problem.