http://www.apdty.com/ Click the above link to find the Accumulator for your vehicle. In this video we’ll show you how to remove the AC compressor, accumulato…
2003 GMC Yukon AC Compressor and Accumulator Repair Part 2: Accumulator
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2003, Accumulator, Compressor, Part, repair, Yukon
- Categories: GMC
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I’ll try that thanks
that sounds more like you are just low on refrigerant. if the orifice tube is clogged, the low side will drop so fast the high side won’t even get a chance to build up any pressure. I suspect that the system is just low on charge. Try adding a 0.75 lb can of refrigerant and see what the pressures go to.
25 and 180
What are the pressure readings when the compressor turns off? (low and high)
I think that I might have a clogged orifice tube on my 05 Yukon. The system has plenty of refrigerant and the compressor seems to be working. It keeps kicking off on low pressure as the high side is climbing. The low side line gets cold and sweats but no cooling air. Is this a bad o-tube? If so is this a sign of failing compressor?
Thanks
Unfortunately with that thing you are only seeing half the picture, to properly figure out what is going on you need a dual-manifold gauge, you have to be able to monitor both the high and low side pressures. For the low side to be as high as you mention, it could be a few things, from contaminated refrigerant, overcharged system, or even a bad ac compressor, but you can’t tell without having a high pressure gauge connected also.
I have a 2002 GMC Truck Sierra 1500 4WD 5.3L and when i use the R-134a A/C pro refrigerant with hose gauge from autozone…. when filling gauge goes up high almost to 65lbs but when i accelerate the engine the pressure drops to the normal and the more i accelerate the engine the pressure drops even more can you please help? Thank you in advance.
How much should this cost to have done?
Man, you just saved my bacon. I have this same model, and am about to do the same repair! Thanks so much for talking us through it. People like you are awesome!
Yes it is a good idea to flush the rear, you can follow the lines towards the front and disconnect them at the front and flush it from there.
If you have rear ac(suburban) should you or how do you flush the system back there? I’m replacing both the front and rear accumulator’s along w/ a new compressor. Thank’s.
You might not have enough refrigerant still,, those trucks hold a lot, and even though there might be enough refrigerant to turn the compressor on, doesn’t necessarily mean there is enough for the system to cool. You should put some manifold pressure gauges (or have a shop do it) on the truck and see if your high and low pressure sides are within spec, I bet you need more freon.
We have a 2003 Suburban just like the Yukon in your video. When we got it the seller said the AC had never worked for him and he had it for 3 years. I checked the shrader valve at the low side and noticed there was some pressure. I thought if it was holding pressure that long even though it wasn’t much, it must not be leaking and we could just charge it and it would work. I put two large cans of refrigerant in and the compressor kicked on and sounded good, but the air stayed hot. What to do?
yeah just today i was helping the guy where i work figure out the mystery of the two ports in the same line.all i was finding is that they were the high and low.. our boss made him feel so dumb because he just couldnt believe it, i will let him know, he isnt getting the a/c to blow cold, i wil show him this.. make another vid clarifying that the low and hi are on the same line, maybe i will suggest to him what i see..here
hello. i just did a 2002 yukon. someone replaced the compressor but not the orifice tube nor the dryer. i changed all that and the expasion valve, they were full of metal shavings. but now i can only put one can of freon in and it cools after the orifice and not out of the evap.nor to the dryer, what do you think. there is a restriction somewhere but ur guess is as good as mine. please help. thanks
It is very important when doing the compressor. The reason is that any debris in the system can get sucked into the new compressor, quickly damaging it and either causing it to fail, or work inefficiently. Most compressor manufactures will even void your warranty unless you have proof that the system was flushed when the job was performed.
How important is it to flush the system out? Do you feel that its necessary?
You would have to check for power going to the compressor at the same time it is not engaging when it should be. So if the clutch is getting power, but not engaging, then you need a new one. But if you are not getting power, then the problem is something else electrical upstream from the compressor.
I have a question ,my ac on my gmc envoy blows out cold air for about 10 minutes and than hot air . I changed the ac cycle swithch on the acumulator and sttill the same. I niticed my compressor shutting off and turning on continuously until engine gets hot and than stops engaging. pipes are hot from the condensor to the evaporator. when it cools down for a while and I restart the engine it does the same thing . Does this mean its my compressor?
Wayne
They will usually come with the part that you are replacing.
I am guessing you need to buy the new seals or do they come with new compressor/accumulator? Good video
Thank you very much for the information. I have now taken care of my problem. I have no doubt that your site will eventually be the talk of Youtube. More and more people are trying to take care of problems instead of taking their car to a dealer. You are a great service and I hope you continue.
Sincerely, Pat Greene
Believe it or not, on that same line are both the high and low pressure fittings. The Orifice tube is in between the two fittings, and it is what creates the pressure difference between high and low sides. The smaller of those two is the low side and the larger is the high side. Once the system is up and running you will even notice the line goes from hot to cold right at that spot where the orifice tube is in that same line.
That would have been Great…Except I watched the whole video and STILL don’t know where the Low pressure port is to Recharge the system. There are 2 on the small line…Which I thought was the High pressure side…and I know you need to charge on the Low pressure side :/ :/ :/
I’ve been lookiing for 2 hours now trying to find and make sure I charge from the low pressure side : /
Pat Greene
I ran in to the same problem with orifice tube. It jammed 3/4 of the way in. After i took it back out, I removed the o-ring and replaced it with the o-ring from the orifice tube being replaced. Oiled it up, and it slid in snugly.
I have a 2002 escalade , when ever I turn on the ac after a couple of weeks of use with a new belt the compressor makes a nasty machine gun noise and the belt breaks , my service always says when they replace and change the ac belt the compressor
Is fine it spins free , or I justed Needed some oil or Low on gas , that’s tells me it’s a bad compressor , why Won’t they change it or
Is it me.
We did actually flush the evaporator, Any time you flush the system you want to be sure to flush the condenser, the evaporator, and all the lines. I did not add any additional oil to the accumulator because on this particular job, we also replaced the compressor, the compressor we used came with the required amount of oil for the entire system. So no additional oil needed to be added.