A/C recharge question - TDR Roundtable

A/C recharge question

11-28-2007, 09:23 PM

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KStump

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Join Date: Feb 2007 Location: Idaho Posts: 4

A/C recharge question

I am currently in South Florida, and my a/c has quit putting out cold air. I've searched the forum and read the many posts on this subject. The first thing I decided to try is recharging the R-134. I bought a cheap guage and connected it to the upper port. With the engine running and the a/c on max, the pressure would cycle between 25-30 on the low end and 50-55 on the upper end. This was at about 5 second intervals. With the truck off, it reads right around 55. The optimum setting, I understand, is supposed to be 40-50. My question is, at what part in the cycle is it supposed to read 40-50? Should it be there on the low end, the high end, or can I set it with the truck off?

Also, I have dropped the fan housing and cleaned it and the drain tube. I checked all of the mixing and temperature controls and all are functioning fine.

I appreciate any help you guys can offer, or any other ideas as to what else the problem might be. Thanks!

__________________
1997, 2500, standard cab, SLT, 4x4, 5 speed, fuel plate moved slightly forward, KDP tabbed, DSS, Brightbox, Bilstein shocks, AFE drop-in air filter, otherwise stock

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