Will the pcm cause the coolant fan motor to constantly run and blow fuses?

1994 FORD ESCORT
12,000 MILES
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ROGERANDLORI
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  • 2 POSTS
When I hook the coolant fan motor up, it blows fuses and the car won't crank. Replaced the motor and have tried every combination possible on the wiring. It either blows fuses or when I turn the ignition off, the car still runs. The fan also continuously runs when the car does crank.
Mar 23, 2012 at 4:52 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
It either blows fuses or when I turn the ignition off, the car still runs. Inspect and test the ignition switch could be shorting out internally causing the overload
Mar 24, 2012 at 5:23 PM
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ROGERANDLORI
  • MEMBER
  • 2 POSTS
Thanks for the reply. Replaced the ignition switch, still does the same thing. Any advice would help.
Mar 26, 2012 at 5:10 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
You have a direct short circuit to ground from the coolant fan thru the relay/s and to the computer
Mar 26, 2012 at 6:40 PM
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