Automotive Air Conditioning Information Forum (Archives)

runderwo on Sun July 22, 2012 8:21 PM

A Valeo bought 5 years ago just black-deathed in my wife's 97 Cav.
A Denso bought now only gives 175 psi head pressure at idle, 300 psi and blows cold at 2500 rpm.

I am tired of replacing compressors. And the "junk" brand outlasted what I thought was a "good" brand.

Just want some thoughts as to people's comparative experiences between brands. Aside from these 2 I have 2 more cars with weak compressors that I would like to replace but I don't want to waste my time with junk.

GM Tech on Mon July 23, 2012 8:00 AM

Even the best compressors can choke to death if serviced improperly........just a thought.

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

TRB on Mon July 23, 2012 10:24 AM

Frankly I have seen as many failure with "name brands" as I have with any of the China imports. As GM Tech mentioned, it is how the installer prepped and maintained the system which proves the best results.

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