2003 keeps blowing fan fuse - Ford Mustang Forum
 
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post #1 of 4 (permalink) Old 10-20-2019 Thread Starter
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2003 keeps blowing fan fuse

So my friend 2003 gt keeps blowing the 50amp fan fuse. Sometimes even shuts the car off once it blows. The car has no AC. An anyone point me in the right direction
Thanks in advance

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post #2 of 4 (permalink) Old 10-20-2019 Thread Starter
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post #3 of 4 (permalink) Old 10-21-2019
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Originally Posted by anthonyvee90 View Post
An anyone point me in the right direction
How do the fan bearings fell when the fan is spun by hand?

Disconnect the fan connector. Use a Volt-Ohm meter (VOM) to measure the resistance of the fan motor coil. The high speed fan is on the OR/LB. Low speed is RD/OG. Black is common ground. Post. Ohm's law R=V/I. In this case V=12 and I=50 amps. Soooooooo if the resistance is less than or equal to 0.24 Ohm, it means there's a short inside the fan's winding.

Does the fuse blow right away or does it run for a little while and then blow?

Have you done a through visual inspection of the car's wiring harness? Look for any evidence of physical damage, rodent activity, or water.

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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post #4 of 4 (permalink) Old 10-23-2019 Thread Starter
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Quote:
Originally Posted by wmburns View Post
Quote:
Originally Posted by anthonyvee90 View Post
An anyone point me in the right direction
How do the fan bearings fell when the fan is spun by hand?

Disconnect the fan connector. Use a Volt-Ohm meter (VOM) to measure the resistance of the fan motor coil. The high speed fan is on the OR/LB. Low speed is RD/OG. Black is common ground. Post. Ohm's law R=V/I. In this case V=12 and I=50 amps. Soooooooo if the resistance is less than or equal to 0.24 Ohm, it means there's a short inside the fan's winding.

Does the fuse blow right away or does it run for a little while and then blow?

Have you done a through visual inspection of the car's wiring harness? Look for any evidence of physical damage, rodent activity, or water.
It blows when the car comes up to temp for the fan to come on
I will check cable and bearings tomorrow and test it as well thanks I’ll keep you guys updated
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