AC/Heater Blower Problem
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Freshman User
Joined: Mar 2005
Posts: 30
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From: virginia
AC/Heater Blower Problem
Today i went out to my 2000 7.3 F350 this morning and i turn on my AC and nothing. I can hear the AC engaging and can hear it change from defrost to floor, etc. No matter what setting the fan setting is on it doesnt blow anything. How should I go about diagnosing what is broken?
thanks in advance!!
thanks in advance!!
Senior User
Joined: Aug 2009
Posts: 150
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My 02 F350 had a bad resister for the blower motor($31.99 Autozone). My truck still had high speed but none of the others. When I pulled the plug out of the resister one of the blades had rusted off into the plug. I tried replacing the switch on the dashbut it didn't help my problem. IMO I would try the resister first.I'm not sure if this helps you or not but good luck!
Matt
Matt
Hotshot
Joined: Jan 2004
Posts: 19,768
Likes: 1,082
From: St Louis
A faulty resistor will not cause a complete loss of blower function - it will cause a loss of all speeds except HIGH.
An intermittent blower (in all speeds) is usually a bad blower motor due to worn out brushes.
An intermittent blower (in all speeds) is usually a bad blower motor due to worn out brushes.
Senior User
Joined: Mar 2007
Posts: 207
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From: Vancouver, BC Canada
I have replaced the resistor and blower motor and still no fix.
My blower goes to limp mode (very slow) after a long highway rides, say >2hrs regardless of running heat or AC. When I change the fan settings it simply stays on very slow.
Any suggestions would be appreciated.
My blower goes to limp mode (very slow) after a long highway rides, say >2hrs regardless of running heat or AC. When I change the fan settings it simply stays on very slow.
Any suggestions would be appreciated.
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