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Front blower motor runs five seconds and shuts off for thirty seconds

Tiny
CAD1030
  • MEMBER
  • 2008 FORD EXPEDITION
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 99,000 MILES
My front blower motor run for about five seconds then shuts off for forty five to fifty seconds and will do this on auto or manual mode. Heat or A/C, the rear blower works fine. I have replaced the blower motor relay with the correct on and also replaced the wire plug.
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Tuesday, August 22nd, 2017 AT 8:41 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,884 POSTS
It sounds like the blower motor is going bad. Here is a guide that will help you confirm the problem by testing for power at the motor while it is not working.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

There is also a blower motor fan controller right at the blower motor I would suspect as well.

Here is a guide and some diagram to help with the testing.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can keep helping you.

Cheers, Ken
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Wednesday, August 23rd, 2017 AT 10:54 AM

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