Defrost problem
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Senior User
Joined: Mar 2003
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Defrost problem
Don't know where to go from here, only blows out the defrost vent. I have checked and there are no vacuum leaks, the pump will run when key is turned on and then it will stop running and will not run again unless I unplug a vacuum line and emty the tank. It was working fine untill the other day and now it will just blow out the defrost vent.
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
I know you said no vacuum leaks, but most people dont check under the glove box in the cab did you check there? If so, then I'm at a loss.
What happens if you move the switch? Any noises or just nothing.
What happens if you move the switch? Any noises or just nothing.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
If vacuum is not running and you know that it is working, the you either have a collaped or kinked line or you controlls are messed up. Look under the glove box and make sure the lines are plugged up there. Follow the lines from the vacuum cansister to the fire wall then on the inside follow them as far as you can. If all looks good, time to look much deeper. Is it blowing full force from the defrost?
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Good find. Thanks for posting back with the problem you found. Being "smashed" is why the reservoir didn't loose vac causing the vac pump to run continuously. I'll have to remember that.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Glad you got it. Seen one melted closed once so you got the look everywhere. Thanks for posting back.
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