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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23821
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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The fan has an intermittent problem on my 2008 F350. It

Customer Question

The fan has an intermittent problem on my 2008 F350. It doesn't matter if the A/C is on AUTO, or one of the manual settings the fan will not work. After the truck has run for some time it will start to blow and work normal.It seems to be a heat related issue. It works fine in the AM, but after lunch when the inside of the cab has warmed up it will not work for a while.The A/C compressor is working though. If I drive with the A/C on NORM it'll blow cold air from outside through the vents.Any ideas? Is there some sort of fan control module somewhere that may have a loose plug or could be bad?
JA: Have you checked the coolant level? Have you checked for a leak in the radiator?
Customer: Is this an automated response. I don't have a radiator problem
JA: Are you fixing your F350 yourself? What have you tried so far?
Customer: I have replaced the blower motor resistor 3 times in the last year.
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 12 months ago.
Category: Ford
Expert:  john -aka eauto replied 12 months ago.

have you checked power to the fan with a test light or a volt meter?