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Ford F150 AC issue.

Posted on 10/21/14 at 6:32 pm
Posted by BOSCEAUX
Where the Down Boys go.
Member since Mar 2008
47740 posts
Posted on 10/21/14 at 6:32 pm
AC on a 2008 Lariat just stopped blowing almost completely today. Every once in awhile it had a 5 to 10 second stall before it kicked in but that was it. This morning it had about a 3 minute stall before it kicked in. After I stopped to get gas it would hardly blow at all and has not improved. When it is on full blast and the truck is moving it will blow cold air but not real hard. Is it a fuse, blower motor resistor, the blower motor itself or something else? The truck still looks and runs great and I don't want to get rid of it yet but I also don't want to sink too much money in a truck this old.
Posted by aaronb023
TeamBunt CEO
Member since Feb 2005
11774 posts
Posted on 10/21/14 at 6:35 pm to
I'm thinking blower motor resistor

Eta: you can buy it from autozone and return it if it doesn't work.
This post was edited on 10/21/14 at 6:37 pm
Posted by BOSCEAUX
Where the Down Boys go.
Member since Mar 2008
47740 posts
Posted on 10/21/14 at 7:04 pm to
Thanks. I'm hoping that's it because that would be the cheapest fix.
Posted by Spankum
Miss-sippi
Member since Jan 2007
56052 posts
Posted on 10/21/14 at 7:07 pm to
check the wire that supplies power to the fan motor...had that problem on a truck a few years back and one of the connectors in the circuit was fricket up...
Posted by VetteGuy
Member since Feb 2008
28198 posts
Posted on 10/21/14 at 7:11 pm to
While it's not uncommon to have issues with a 6 year old truck, I've been pretty disappointed with some quality issues on Ford's newer F150s.

Leaking roof mounted bed lights (known issue from new,$150 fix), pinched wire harness sending false signals, just knicky-knack crap that oughta be fixed for free.
Posted by stat19
Member since Feb 2011
29350 posts
Posted on 10/21/14 at 7:28 pm to
Had the same issue - $119 fixed it.
Posted by BOSCEAUX
Where the Down Boys go.
Member since Mar 2008
47740 posts
Posted on 10/21/14 at 7:38 pm to
Dealer or mechanic, or did you do it yourself. I know the resistor is only about $30 and according to a YouTube vid looks easy to replace.
Posted by BOSCEAUX
Where the Down Boys go.
Member since Mar 2008
47740 posts
Posted on 10/21/14 at 7:39 pm to
quote:

Leaking roof mounted bed lights (known issue from new,$150 fix),


Had this done twice and so has several people I know. Should have been a recall item.
Posted by Austin Cajun
Austin, Tejas
Member since Aug 2013
1884 posts
Posted on 10/21/14 at 8:15 pm to
H
Posted by Austin Cajun
Austin, Tejas
Member since Aug 2013
1884 posts
Posted on 10/21/14 at 8:18 pm to
Had the same issue in my 05. The bushing in the blower motor wears out and let's the shaft bind. Nothing you can do to fix it, have to replace the blower motor. They can be found for about $100 online and very easy to change yourself.
It's located under the dash on the passenger side, didn't have to remove any covers on mine. I think it was 3 screws to drop the blower and it's 1 plug. Literally took less than 20 minutes.
Posted by Fred Farkle
Member since Jun 2008
616 posts
Posted on 10/21/14 at 8:36 pm to
Same issue on my 2010 F150. Call autozone with your VIN or MM and make sure they have a resistor for your vehicle. If unsure, call Ford dealership and give them VIN and get proper part number and then call Autozone. Go to autozone and borrow their socket set and take out your resistor in the parking lot - It took me 3 minutes - two screws behind the glove compartment - take it inside, confirm right part and put it in in the parking lot, return socket set to autozone guy. Done. I have never worked on a car before this. I know nothing about cars. This was cake after watching a couple videos on youtube.
Posted by BOSCEAUX
Where the Down Boys go.
Member since Mar 2008
47740 posts
Posted on 10/22/14 at 5:42 am to
Is there a way to tell the resistor is bad by looking at it?
Posted by meauxjeaux2
watson
Member since Oct 2007
60283 posts
Posted on 10/22/14 at 7:15 am to
if it was the resistor,fan would run on high setting just fine.
My guess is some junk has gotten into the fan assembly or your fan is going bad.
Posted by meauxjeaux2
watson
Member since Oct 2007
60283 posts
Posted on 10/22/14 at 7:16 am to
quote:

Had the same issue in my 05. The bushing in the blower motor wears out and let's the shaft bind. Nothing you can do to fix it, have to replace the blower motor. They can be found for about $100 online and very easy to change yourself.
It's located under the dash on the passenger side, didn't have to remove any covers on mine. I think it was 3 screws to drop the blower and it's 1 plug. Literally took less than 20 minutes.
this sounds about right.
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