Flashing overdrive light

1999 FORD CROWN VICTORIA
199,800 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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CHRISTOPHER HARTMAN
  • MEMBER
  • 6 POSTS
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?
Jun 30, 2019 at 8:14 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 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
Jun 30, 2019 at 12:58 PM
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