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- - AC compressor chatter (https://67-72chevytrucks.com/vboard/showthread.php?t=825039)

Cesar Diaz

08-20-2021 02:28 PM

AC compressor chatter

I replaced a 1 year old AC compressor on my 72 c10 added the required PAG 46 oil, pulled a vacuum, verified no leaks, drew a vacuum for 1.5 hours more then added R134, at one point my scale got stuck and I ended up adding about a 1/2 lb more of R134 then I should have.

While loading the R134 all went smoothly. when I went to drive the care with the AC on it started squealing loudly so i shut off the AC and when I got home checked and the Compressor is intermittently locking up.

Could it just be that the compressor is bad or is the extra R134 the issue?

body bolt

08-20-2021 02:50 PM

Re: AC compressor chatter

Quote:

Originally Posted by Cesar Diaz (Post 8960623)

Do you think you may have overcharged?

Cesar Diaz

08-20-2021 02:58 PM

Re: AC compressor chatter

yes by a 1/2 lb scale got stuck and I didnt realize it.

Davidf

08-20-2021 03:05 PM

Re: AC compressor chatter

What is your high side pressure reading and air temp across the condenser. Let's start there and go forward.

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