• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

AC Blowing Leaks In Metal

Steven Monteith

Steven Monteith

New member
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?
 


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.
 
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?
 
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?
 
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.
 
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.
 


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.
 
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....
 
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.
 
BillBoost37 said:
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.
Click to expand...


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?
 
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.
 


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.
 
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.
 
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
 


I took a look at mine, the high side switch is after the condenser so it has to be that since the switch wouldn't see the pressure if its clogged
 
You must log in or register to reply here.
Back
Top