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Need top-off?

dw on Sun July 19, 2009 3:05 PM User is offline

Year: 2003
Make: Pontiac
Model: Grand Am
Engine Size: 2.4?
Refrigerant Type: 134
Ambient Temp: 84
Pressure Low: 32
Pressure High: 210
Country of Origin: United States

My neighbor is going to take a road trip and wanted to make sure his a/c does not give him trouble, so wanted me to top off the r134. I asked is the a/c is working ok? Yes. Ok, will it get you as cold as you want? Umm....yeah. Turns out, he wants to make sure that his WIFE does not give him trouble if the a/c doesn't keep her cool enough! (THAT I understand!)

I took readings and told him it's not a good idea to top off r134, and that if too much is added it could cause problems that he doesn't have now. And to call his buddy (who lives 100 miles away and does a/c professionally) with the readings in order to get his recommendation on what, if anything, to do.

So how does a fella determine if a system has an adequate amount of freon?


(Readings were taken in the shade, 1500 rpm, doors and windows open, blower fan on high, vent air = 51F.
54% RH outside ambient.

Edited: Sun July 19, 2009 at 4:57 PM by dw

Cussboy on Sun July 19, 2009 4:50 PM User is offline

Sounds OK to me, don't fix what's not broken. Vent temperatures will be cooler when actually driving.

dw on Sun July 19, 2009 5:14 PM User is offline

Quote
Originally posted by: Cussboy
... don't fix what's not broken.

Thanks Cussboy.
I told him the same: "if it ain't broke, don't fix it".

daman on Sun July 19, 2009 6:03 PM User is offlineView users profile

Quote
Originally posted by: dw

So how does a fella determine if a system has an adequate amount of freon?
The only way is to reclaimed and weight it,with out doing that your just peeing in the wind,one can take pressure reading's like you did and compare to factory spec to get you "close" but it would only be that,close.

to be spot on needs to be weighed.



-------------------------
'00 Pontiac Sunfire 2200 I4 SFI
'99 Chevy 4x4 Z-71 5.7 Vortec v8 CPFI
'97 Chevy 4x4 6.5 Turbo Diesel 2500
'95 Pontiac Grand Am GT 3100 v6 SFI
'88 Chevrolet Camaro IROC 5.7 TPI(49,000 original miles)

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