Automotive Air Conditioning Information Forum (Archives)

93Serria on Sun July 24, 2011 12:20 PM

Year: 2004
Make: Buick
Model: Rendezvous
Engine Size: 3.4
Ambient Temp: 95
Pressure Low: 35
Pressure High: ?
Country of Origin: Canada

Hello...last year had system flushed and new compressor installed and worked great......over the winter the system leaked a bit(low side valve was leaking and now fixed)......compressor still kicks on ,but lukewarm air......my neigbour checked and he said it was low and added a can which brought it up to 35 on the low side at 1500 RPMs?......but now its still just cooler air and nothing near what it used to be?.....any ideas...thanks

Edited: Sun July 24, 2011 at 12:20 PM by 93Serria

JJM on Sun July 24, 2011 12:59 PM

What does your neighbor say, since he diagnosed and charged the system? What do the instructions for the kit say?

Joe

93Serria on Sun July 24, 2011 1:16 PM

he said his kit? only says 35 max pressure for the low side?....but doesnt have a high side guage?........and he doesnt know what the specs for this car are and was just trying to help me out and doest want to overfill it

Edited: Sun July 24, 2011 at 1:18 PM by 93Serria

bohica2xo on Sun July 24, 2011 4:43 PM

Since this is Canada... any idea what type of refrigerant he put in it?

.

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"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

JJM on Sun July 24, 2011 10:39 PM

If someone isn't aware of proper specs - or proper service procedures - they really shouldn't be messing with it. That's not doing you a favor. What if someone offered to change your oil and didn't know how many quarts to add, would that be doing you a favor.

Also, how was the leaking low side valve fixed?

Both high and low side readings are necessary for proper initial diagnosis, so please provide us with both high side (discharge) and low side (suction) pressure readings, and the ambient temperature they were taken at. Pressure readings should be taken as follows:

Engine running at 1,500 RPM
Temperature selector on MAX cold and RECIRCULATE
Blower on HIGH
Door and windows OPEN

As an additional diagnosis, the refrigerant should be recovered and the system charged to spec, that's the only way to ensure a proper charge.

Joe

93Serria on Mon July 25, 2011 11:34 AM

Hello....sadly he works out of town during the week so I cant get that info?.......Since I spent so much cash last year on the new compressor and such that I will just go without till I can afford to take it to a certifitied air condition service outlet....which sadly may have to wait till next year....thanks to all for the info and help..this is a great site

JJM on Mon July 25, 2011 11:35 PM

Or you can get the tools and complete the necessary repairs yourself... and you'll have the tools for other vehicles for future repairs.

Everything you need is pretty much here:

DIY Starter Kits

Plus, you've got the forum for questions...

Joe

93Serria on Tue July 26, 2011 3:58 PM

I would love to have that guage kit to do my own repairs,,,but being on disability pension for 12 years doesnt leave much cash for extras

.....but I love reading this site as it has tons of usefull info for the everyday guy....thanks for everything