ac question

93bluesilverrad · 06-27-2009, 10:22 PM

what causes air to go from cold to barely cool after approx 30 minutes of driving, gauges say 134 level is good. could it be expansion valve freezing up or ?????? thanks.

leolkfrm · 06-28-2009, 06:42 AM

what year chevy?

bradrhale · 06-28-2009, 06:56 AM

a dirty coil. air must blow through a coil to make it work. no air and the unit will freeze up and no longer blow cool air.

93bluesilverrad · 06-30-2009, 11:39 PM

93 1/2 ton

leolkfrm · 07-01-2009, 06:33 AM

the electric flapper motor may be mal-funtioning

Josh123 · 07-01-2009, 04:29 PM

try getting a new presure relife valve.

06-27-2009, 10:22 PM	#1
93bluesilverrad Full Member Join Date: Dec 2007 Posts: 45	ac question what causes air to go from cold to barely cool after approx 30 minutes of driving, gauges say 134 level is good. could it be expansion valve freezing up or ?????? thanks.

06-28-2009, 06:42 AM	#2
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,223	what year chevy? __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

07-01-2009, 06:33 AM	#5
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,223	the electric flapper motor may be mal-funtioning __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

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06-28-2009, 06:56 AM	#3
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 7,831	a dirty coil. air must blow through a coil to make it work. no air and the unit will freeze up and no longer blow cool air.

06-30-2009, 11:39 PM	#4
93bluesilverrad Full Member Join Date: Dec 2007 Posts: 45	93 1/2 ton

07-01-2009, 04:29 PM	#6
Josh123 Junior Member Join Date: Jul 2009 Posts: 2	try getting a new presure relife valve.