1996 Ford Mustang eec fuse keeps blowing

GBBBYB

MEMBER
1996 FORD MUSTANG
12,000 MILES

I keep blowing my eec fuse. It ran for a few days, then as I was driving, the car shut down and my battery light came on and my ant theft light blinked quickly. Now I can no longer start car without blowing 20 amp fuse every time. I changed my ccrm, but have done nothing else. If I change my ecu, do I have to have it reprogrammed? What can it be?

Sunday, July 21st, 2013 AT 6:09 PM

1 Reply

CARADIODOC

MECHANIC
34,330 POSTS

A simple trick to finding a short is to replace the blown fuse with a pair of spade terminals, then use small jumper wires to connect them to a 12 volt light bulb. A brake light bulb works well. When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it's not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.

You shouldn't need to program any computer on a '96 model. GM started that BS on some 2002 models.

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Sunday, July 21st, 2013 AT 7:50 PM