2005 Expo AC problems
Thread Starter
|
New User
Joined: Dec 2012
Posts: 22
Likes: 0
2005 Expo AC problems
I have a 2005 Expo, AC has worked great for months then the other day it just blows hot. I grab a can of AC freon with the gauge and check it. Its reading full but still I blow 2 quick trigger pulls into it. Run it for 10 min but its still hot. I turned it off and waited 30 min got back in to go to the store and its blowing ice cold. Stays that way for about 48 hours then goes back to hot again. Take it into the shop and they test it, they said it has no leaks and pressure looks ok it was at 3.2 and should have been at 3.6 so they put a little freon in with no difference. Still blowing hot and the high rail is way hot while the lower line is at air temp. Turn it off again, I signed the paperwork, get in and it's blowing ice cold again. Does anybody have any idea whats going on? I'm not to familiar with AC systems.
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
pressure looks ok it was at 3.2 and should have been at 3.6
and the high rail is way hot while
Check for excessive compressor clutch gap. Your symptoms are fairly common when the clutch wears and becomes intermittent due to excessive gap. If excessive, either perform a shimectomy (if possible) or replace the clutch and properly set the gap with new shims.
Fleet Owner
Joined: Apr 2008
Posts: 24,316
Likes: 5,127
From: 0,0,1
Verify the operation of the blend door. To do so simply run the A/C, wait for it to get cold and then place your hand in front of the vent as you slowly raise and lower the temperature setting. If the temperature doesn't change the blend door is not moving.
Thread
Thread Starter
Forum
Replies
Last Post
brandon_oma#692
1999 - 2003 7.3L Power Stroke Diesel
4
May 21, 2009 07:37 AM
