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Defrost blows with key off


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splintert92
New User

Mar 8, 2011, 8:46 AM

Post #1 of 2 (1338 views)
Defrost blows with key off Sign In

I have a 2000 Lincoln Navigator and the defrost blows full when you shut it off. It keeps blowing after you take the key out and shut the door, and it does not stop. A couple days before this started, #3 cylinder started misfiring. Not sure if they are related but I bought plugs and plug wires and I am gonna get a coil for that cylinder. As of now, I have the climate control box unplugged so not to run the battery down. My initial thought is to replace the the climate control box but that will be expensive and I was hoping for others input. Thanks!


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 8, 2011, 10:45 AM

Post #2 of 2 (1335 views)
Re: Defrost blows with key off Sign In

If someone sold you plug wires for that truck, you'd better go get your money back because that truck doesn't have any.

As for your blower problem, you likely have a bad blower motor speed control module.



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