Ignition fuse and starter relay both blown

Asked by Jan 08, 2017 at 12:37 PM about the 2002 Ford Taurus SE

Question type: Maintenance & Repair

Here is how my problem started. I went to clear some codes for a misfire
after changing the spark plugs. I cleared codes (with engine running) and
went to turn off the engine. The engine would not turn off but started
making a loud noise. I disconnected the negative terminal from the battery
and successfully turned off the car.  Connected the battery terminal and
tried to start the car but nothing. I had a blown ignition fuse. Replaced it
and it blew again as soon as I turned the key to the start position.
I checked the ignition switch and it is good. I checked the starter relay and
it was bad. So now im blowing starter relay and ignition fuse. Im at a loss.
Could something have happened when I cleared the codes with my
scanner?

3 Answers

50,795

What king of loud noise was it? Describe it.

It was making a high pitched whining noise and after a couple of seconds a loud knocking noise before I finally got it turned off.

Update. I replaced the starter relay and the ignition fuse and it started up. I drove it around for a few minutes. About an hour later I went out there and tried to start it. It turned over and started for a second and then went dead. Both the relay and fuse had blown again. I dont know how to check for short or determine what is causing them to blow

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