A/C Grindes BAD

[thewash]

I Have a 99 ranger v-6 flex fuel. When I turn on the A/C I hear a griding noise then the clutch engages. Also at times I turn on the a/c and it wants to stop the engine out right. Plaese help me pin point this problem anyone.
Additional info a shop recently refilled the freon and adjusted the clutch. Im thinking Im getting takin for cash I dont have by these people. I say that after 2500.00 dollars in repairs that havent done much for me but give me more problems than what I went in with.

 

[Wicked_Sludge]

it sounds to me like your a/c compressor is toast. this usually happens when the refridgerent leaks down low enough that insufficient oil is circulated through the system when engaged. id take it to another shop for a second opinion.

 

[amanda11270]

I am an ESCO certified and schooled refridgeration technician in both MVAC (cars and truck) and HVAC (Buildings and houses), and from what you are telling me, one of two things have happened, your compressor has just plain gone bad or, from what you are saying above if you just had your AC serviced, the technician that did it has flooded your compressor with liquid refridgerant, you see a compressor is ONLY designed to pump vapor, not liquid. Liquid does what is called slugging a compressor, if too much liquid is put in it can actually stall a 350 cubic inch motor if you are charging it with the engine running, I know I had it happen before I knew anything about Air conditioning systems when I was younger. Refridgeration requires exact amounts on charges and exact procedures, whenever I charge a system, I use something called a "Charge Faster" it prevents liquid from entering the system you are charging while still allowing you to charge it as fast as possible. Another possibility is they used the wrong oil in the compressor, if your car uses 134A as most do now a days, they may have used PAG oil instead of the recommended ESTER oil that is compatible with 134A, see PAG oil and 134A combines over time and makes an acid that eats or corrodes your internal components of your AC system. I hope this helps some, and good luck.

 

[88gt]

I am an ESCO certified and schooled refridgeration technician in both MVAC (cars and truck) and HVAC (Buildings and houses), and from what you are telling me, one of two things have happened, your compressor has just plain gone bad or, from what you are saying above if you just had your AC serviced, the technician that did it has flooded your compressor with liquid refridgerant, you see a compressor is ONLY designed to pump vapor, not liquid. Liquid does what is called slugging a compressor, if too much liquid is put in it can actually stall a 350 cubic inch motor if you are charging it with the engine running, I know I had it happen before I knew anything about Air conditioning systems when I was younger. Refridgeration requires exact amounts on charges and exact procedures, whenever I charge a system, I use something called a "Charge Faster" it prevents liquid from entering the system you are charging while still allowing you to charge it as fast as possible. Another possibility is they used the wrong oil in the compressor, if your car uses 134A as most do now a days, they may have used PAG oil instead of the recommended ESTER oil that is compatible with 134A, see PAG oil and 134A combines over time and makes an acid that eats or corrodes your internal components of your AC system. I hope this helps some, and good luck.

now that is the stuff we need here! you ought ot submit that infor with whatever else you may know about that stuff in the tech forum ac section

 

[amanda11270]

Another thing also, is if at this point the AC is working, and the compressor is just noisy, and lugging your engine, there is a possibility that the present charge could be removed and the correct amount of charge could be put in, that is if no damage has been done to your compressor as of yet.


One more thing also, I have always found it absolutely amazing that when you consider the power that internal combustion engines produce, even just at idle, how that small compressor and the lines that connect it, can hold back enuf energy to not just lug, but abosolutely stop a running engine (as I did when I was a bonehead in the past) by having too much liquid in them without blowing off the hoses, those hoses are amazingly strong, and must have incredible burst capabilities. Be safe if you work on these systems yourself.

 

[thewash]

Thank You

Thank you all for your response. I should print it out and give it to the last shop I visited as referance guide. Im gona take it to a recomended shop by a friend they do A/C only that should be a winner.Thanx again for all your help and wisdom. I will update later to give the out come. The Wash