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1997 Ford Mustang Turn Signal Problem

Tiny
JSH35601
  • MEMBER
  • 1997 FORD MUSTANG
  • V8
  • 2WD
  • MANUAL
  • 142,000 MILES
Yesterday my Mustang developed an odd problem. The turn signals will work with the ignition off but will not work with the ignition on.
The hazards work either way. All functions on the combination switch work.
I replaced the ignition switch but no change.

Any Ideas?

Steve in Alabama
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Sunday, July 25th, 2010 AT 8:50 PM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
In I/P fuse panel check fuse #1 15A.
Let me know
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Monday, July 26th, 2010 AT 1:02 PM
Tiny
JSH35601
  • MEMBER
  • 4 POSTS
Checked the fuses again as suggested, they are all good.

Figured that I would throw some more parts at it.

Started with the cheapest, the flasher unit. $8 from Auto Zone.

Installed it and everything is back to normal.

Still don't know why. Seems like if the flasher was bad the signals would not work at all. It is an electronic flasher, so I guess something went wrong inside it.

Almost makes sense because the hazards will work anytime. Guess something got crossed up and caused the turn signals to work with the key in the wrong position.

We can file that one away for future reference.

Steve in Alabama
Old Guys Rule
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Monday, July 26th, 2010 AT 8:11 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
That's where I was going if fuse was good when car is running that fuse powers turn signals through flasher. With engine off power comes from another fuse and operate flashers also. It's a Ford thing
Good Job
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Tuesday, July 27th, 2010 AT 11:57 AM

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