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Flashing overdrive light

Tiny
CHRISTOPHER HARTMAN
  • MEMBER
  • 1999 FORD CROWN VICTORIA
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 199,800 MILES
My CVPI recently started flashing the overdrive light and won't stay in one gear. Someone told me that it's a wiring harness that may have worked itself loose which is confusing the system. Is this true?
Sunday, June 30th, 2019 AT 3:14 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome to 2CarPros.

Anything is possible, but that is unlikely. The overdrive off (O/D OFF) indicator has dual functions. The O/D OFF indicator illuminates when the overdrive is turned off. The O/D OFF indicator also illuminates if a fault is detected in the automatic transmission.

What needs done is to have the computer scanned with a scanner which can read different types of vehicle trouble codes. Do that and let me know what you find. Also, and this may seem a bit crazy, but confirm that grounds from the battery to the body and engine are clean, tight, and not damaged.

Let me know what you find.

Joe
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Sunday, June 30th, 2019 AT 7:58 PM

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