AC Compressor sounding like a Procharger lately
Thread Starter
Burning Brakes
Joined: Jul 2018
Posts: 1,113
Likes: 144
From: Miami
AC Compressor sounding like a Procharger lately
Hope it’s not warning signs of a future failure. AC blows cold. Just a little noisier lately. Sounds like a procharger a bit, only when the compressor is turned on. Dead quiet when Compressor is off.
Pro
Joined: Nov 2018
Posts: 674
Likes: 102
iF you are lucky the clutch on the front of the compressor is rattling . If you have a very long screwdriver /piece of copper or steel tubing
you can place it on the compressor and put it to your ear and hear where the noise is coming from
you can place it on the compressor and put it to your ear and hear where the noise is coming from
Pro
Joined: Dec 2014
Posts: 682
Likes: 275
From: Cincinnati Ohio
Looks like you are in Miami so I’ll guess you have not had a significant change in temperature and humidity.
Two quick thoughts.
1. Does this coincide with a recent servicing of your a/c system? Overcharging with refrigerant drives up the high side pressure and, if overcharged significantly, can allow liquid return to the suction side. Both will increase the noise from an otherwise fine compressor.
2. On the opposite end, a low refrigerant charge condition will lead to a noisier V7 compressor. I have to think in Miami you would notice the performance drop off from a low charge condition. Very easy and very rough check for low charge, rev the engine to a couple thousand rpm with the blower on high. Your suction line should feel cold and be sweating from condensation in a humid climate like Miami in the summer.
Two quick thoughts.
1. Does this coincide with a recent servicing of your a/c system? Overcharging with refrigerant drives up the high side pressure and, if overcharged significantly, can allow liquid return to the suction side. Both will increase the noise from an otherwise fine compressor.
2. On the opposite end, a low refrigerant charge condition will lead to a noisier V7 compressor. I have to think in Miami you would notice the performance drop off from a low charge condition. Very easy and very rough check for low charge, rev the engine to a couple thousand rpm with the blower on high. Your suction line should feel cold and be sweating from condensation in a humid climate like Miami in the summer.
Thread Starter
Burning Brakes
Joined: Jul 2018
Posts: 1,113
Likes: 144
From: Miami
I was right. AC was giving its final wishes, last written will, and asking for the holy last rites. It got worse during my commute home and suddenly the load increased to the point it seized and would just shut the engine off if I had the compressor on. Time for a new compressor and time to look up some tutorials on changing it.
Safety Car
Joined: Mar 2015
Posts: 3,638
Likes: 245
I was right. AC was giving its final wishes, last written will, and asking for the holy last rites. It got worse during my commute home and suddenly the load increased to the point it seized and would just shut the engine off if I had the compressor on. Time for a new compressor and time to look up some tutorials on changing it.
Feel free to come to my house and rip out my ac compressor.
