AC Blowing Leaks In Metal

**Steven Monteith** · 06-30-2014

I'm continuing to have a high pressure problem. At high RPMs the air will blow hot from springing a leak. First couple of times it cracked the little canister that connects to the compressor. 3rd time it blew a whole in the compressor. Each time there was a brand new compressor, orifice tube and accumulator put in. System was flushed and everything was done correctly. These leaks all happened a week or 2 apart. Obviously there is a problem with high pressure. Bad high pressure switch? Clogged Condensor? What else could cause this?

**ericspecullaas** · 06-30-2014

ok quesetion to you do you have an ac gauge that tell your the pressure in the line. i bet your either over filled or under filled. when the pressure in the ac compressor gets above 50 it turns off the compressor preventing it from blowing up. now you could have a bad safety switch but I doubt that. make sure your have lower than 50psi in the line.

**Steven Monteith** · 06-30-2014

My mechanic that did the job has the guages. He does plenty of AC work so I'm pretty sure he filled the system correctly. So you think there is a chance the high pressure switch is bad?

**ericspecullaas** · 06-30-2014

maybe but also it could be a blender door. mine went bad and one side blowing hot air other side ice cold ac air. when you move the control knob does the air flow change at all?

**Steven Monteith** · 06-30-2014

I don't think I ever tried messing with the control knobs. Both sides are blowing hot though. I think I've had some sort of issue a long time ago with one side blowing hot and the other blowing cold.

**02NavyBlue** · 06-30-2014

It could be a clogged condenser right? I'm not sure exactly where the high pressure switch is at but if something is restricted before it that could be an issue.

**Anthony Smith** · 07-01-2014

I'm no AC mechanic, I just know the basics but if it's blowing components apart at high rpm I would bet that it isn't shutting off when it's supposed to. The compressor clutch is supposed to disengage when your on the throttle, I'm not sure what switches command it to do that though.

**Steven Monteith** · 07-01-2014

I've heard before from a couple of mechanics for toyota that it could possibly be a bad high pressure switch or a clogged condenser. A guy at autozone was mentioning something about an electrical issue. But he wasn't sure if my car had something like that...compressor relay or something....

**BillBoost37** · 07-01-2014

Skip the blend door theory.. you have a better chance of aliens messing with your AC at night than a blend door causing the issue.

Also not an expert, I'd agree though..if that high switch is good.. something is keeping it from seeing the pressure.

**Steven Monteith** · 07-01-2014

Originally Posted by BillBoost37

Skip the blend door theory.. you have a better chance of aliens messing with your AC at night than a blend door causing the issue.

Also not an expert, I'd agree though..if that high switch is good.. something is keeping it from seeing the pressure.

If the switch is good then it must be a clogged condenser right? Because I got a new evaporator every time it blew. I bought a new condenser and high pressure switch just to make sure. Just trying to make sure if it can be anything else so I can replace that too. Could that little canister coming off of the compressor be clogged? Or would that be noticeable when flushing out the system?

**BillBoost37** · 07-01-2014

At this point you are most of the way to a new system. Not sure how much pressure it takes to blow those pieces apart, but the high side when I'm charging is typicallying sitting in the 150-225psi range. That is normal for the high side port.

**SnowDrift** · 07-01-2014

If the pump comes apart, the condenser has to be replaced. It cannot be flushed. The tubes are too tiny for the debris to move through. The larger round type tubes can move material through them when flushed, but the smaller ones cannot. If I recall correctly, anyhow, the condenser is the first thing the refrigerant sees after leaving the pump, thus the dumping ground for trash from the bad compressor.

**02NavyBlue** · 07-01-2014

That's correct ^ replacing it is almost required like he said. Few compressors will have a screen to catch debris on the high pressure side in case of complete failure. I don't think our compressors have them.

**Steven Monteith** · 07-01-2014

Ok. Seems like replacing the condenser is a good idea.

**02NavyBlue** · 07-01-2014

It's probably where I would have started. The evaporator only sees around 30 psi normally so it wouldn't ever cause that. If it saw higher pressure it wouldn't get cool. Your problems should be solved after this