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Old June 2nd, 2010, 08:54   #1
Veteran Member
Join Date: May 2010
Location: Tampa Fl
Default A/C Fix You May NOt Need A New Compressor

Ive come across this scenario more than once now. I have a 2000 Jetta. I live in FL so A/c is important most of the time. I dont know if anyone else has posted this info, but here is what i experienced i hope it helps someone.

Here's the details:
-warm air from vents during the day & semi-cool at night
-Compressor engages fine
-high and low side pressures almost equal
-no leaks system has full charge

I came across an article a year ago(dont remember who wrote it, if i find it i will post it) that talked about the sanden sd7v16 compressor. It is a variable displacement pump. There is a control valve in to back of the pump that controls the displacement of the pump. My pump was pumping but just not enough. So i ordered a new control valve and some gaskets and a receiver/dryer(always recommended), and some r134a and oil.

After discharging the system, remove the back of the pump with the 7 or so bolts at the back of it. The reed valve plate will then come out and the control valve is bolted thru it with a nut to hold it. Replace the valve and reassemble with new gaskets. Then recharge system and BAM I have cold A/c again.

I ordered parts from Polar Bear Inc in ft lauderdale (helpful people there)
control valve PN# EX 10067
gasket set PN# GA 4567KP
PAG46 oil
Dryer PN# 10018

Anyone else have this problem or is it just me?
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