Check AC charge?

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Nov 9, 2008
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How can I check to see if the ac system has any charge in it? I’m wondering if it leaked out and if I can then cut out parts without having to get someone to evacuate it. I don’t have the car at this time so I can’t just flip the ac on to check.
 
A pressure gauge set is the obvious answer. Even the low side ones that come with cans of r134a should show you, along with the presence or absence of the "pffft" when you connect it.
 
Can I just press on any of the schraders and listen? I mean, pre and post compressor, both sides should be equal in pressure right? been sitting a couple months now. I’ve never worked on ac, have a vague idea how they work and all, but not about start working on them now.
 
Yes, you can very quickly press the schrader valve on the charge port and listen for it to discharge a small amount of gas. I don't know how things are in your area but in my area the local shops will evacuate the system and reclaim the refrigerant for around $30. Some will want to charge for the full reclaim and recharge procedure which is usually $80 but you just have to let them know you're going to open the system up and don't want to discharge the gas into the atmosphere.

If the system is already discharged then proceed with caution when opening things up.
 
How can I check to see if the ac system has any charge in it? I’m wondering if it leaked out and if I can then cut out parts without having to get someone to evacuate it. I don’t have the car at this time so I can’t just flip the ac on to check.

Is your A/C not working or just working poorly?

Now if it's just a little low and not working the best that it can, yes that can be difficult to measure. If it's so low that it's not coming on yeah, just tap the vale to see what comes out.
 
Is your A/C not working or just working poorly?

Now if it's just a little low and not working the best that it can, yes that can be difficult to measure. If it's so low that it's not coming on yeah, just tap the vale to see what comes out.
Well, it was working just fine--then I hit a rock and bent the radiator all up. In order to do the rad the condensor has to come out. If it somehow is still holding a charge then I'll get it evacuated--but if it leaked out all on its own (what are the odds of taking out the rad but not the condensor???) then I don't have to worry about it.

This is on my wrecked car. I'm getting frustrated that nothing is getting done on it. I'd like to toss in the towel and move on, yet I kinda don't want to go car shopping either. So do I limp the car home, pull the condensor and then see how to unbend things back into a usable shape? Car was sorta ok before, and could be forced into living another year or two, as long as I have low standards (like no a/c etc).
 
All these restrictions on venting r134 into the atmosphere and yet you can walk right into any walmart and buy r134 duster gas that's entire purpose is to be sprayed uncontrollably into the air.
DIYers can buy virgin R-134a/R-1234yf but AC Pro is all the rage. However, if there is moisture in your system and/or you keep on topping off with AC Pro, the risk of damage to your compressor is real. And it can destroy recovery machines.
 
Radiator does not have anything to do with condenser except for location proximity.
Theoretically, removing radiator carefully and put a new one, should not bother the condenser.
Unless you have something weird with a condenser that is tied together to radiator.

R-134 is pesky, you cannot have too much or too little pressure.
So, don't touch it or even try to recharge it if it works properly.
 
Radiator does not have anything to do with condenser except for location proximity.
Theoretically, removing radiator carefully and put a new one, should not bother the condenser.
Unless you have something weird with a condenser that is tied together to radiator.
Many cars and trucks are built so that you can't remove one without the other. Have to pull both the rad and condenser then separate them on the bench.

I recently replaced a radiator in a 12 dodge avenger. Absolutely no way to get the radiator out without pulling the condenser and the condenser also contains the transmission cooler. Quite a job.
 
Radiator does not have anything to do with condenser except for location proximity.
Theoretically, removing radiator carefully and put a new one, should not bother the condenser.
On my '99 Camry I was able to R&R the radiator without messing with the condensor. On this one they are unlikely to unmate. I know for a fact that the condensor is pushed into the radiator and will have to be removed, as the radiator is almost into the engine mount.

camry1.jpg
 
Well, it was working just fine--then I hit a rock and bent the radiator all up. In order to do the rad the condensor has to come out. If it somehow is still holding a charge then I'll get it evacuated--but if it leaked out all on its own (what are the odds of taking out the rad but not the condensor???) then I don't have to worry about it.

This is on my wrecked car. I'm getting frustrated that nothing is getting done on it. I'd like to toss in the towel and move on, yet I kinda don't want to go car shopping either. So do I limp the car home, pull the condensor and then see how to unbend things back into a usable shape? Car was sorta ok before, and could be forced into living another year or two, as long as I have low standards (like no a/c etc).
Need to just wait it out and let the insurance either write you a check for the damages or total it and buy it back. I think it’ll definitely be worth your time.

But don’t be afraid to bring Karen out and tell them the time it’s taking is getting ridiculous. Have the insurance pay for a rental car, that’ll speed it up.
 
Need to just wait it out and let the insurance either write you a check for the damages or total it and buy it back. I think it’ll definitely be worth your time.

But don’t be afraid to bring Karen out and tell them the time it’s taking is getting ridiculous. Have the insurance pay for a rental car, that’ll speed it up.
Loads of fun.

Am refusing to rent a car. Why have something nice only to return to my clunker? Don't know what I'm missing, as long as I never taste what I could be having.
 
Yes, you can very quickly press the schrader valve on the charge port and listen for it to discharge a small amount of gas. I don't know how things are in your area but in my area the local shops will evacuate the system and reclaim the refrigerant for around $30. Some will want to charge for the full reclaim and recharge procedure which is usually $80 but you just have to let them know you're going to open the system up and don't want to discharge the gas into the atmosphere.

If the system is already discharged then proceed with caution when opening things up.
$30-$80?? I wish I lived there. I'm getting quotes as high as $200 for recovery and recharge.
 
All these restrictions on venting r134 into the atmosphere and yet you can walk right into any walmart and buy r134 duster gas that's entire purpose is to be sprayed uncontrollably into the air.
I understand the point you’re trying to make, but to say they’re designed to be sprayed uncontrollably into the air is a bit of an exaggeration.
 
$30-$80?? I wish I lived there. I'm getting quotes as high as $200 for recovery and recharge.
I suppose it's possible that I get a neighborhood rate since both shops that I use are right near my house. I have never asked an "off the street" customer what they pay. I do the recharge myself but I don't have a reclamation machine and I honestly just hate releasing the gas into the atmosphere. Besides, that little valve gets incredibly cold if you just push it in and let it bleed.
 
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