94 XR7 O/D light

[Leonardz]

I just got 94 with about 30,000 miles.

Does anyone know why O/D light flashes but tranny operation is normal.
If I disengage O/D & wait till car shifts to 3rd - then turn button on, it will shift to 4th & no light flashes.

If I don't do this then light will start flashing once tranny goes into 4th

Maybe car has not been driven enough & this will go away??

Thanks

[94cougarXR7]

if there is no malfunction with the transmission operation, you may just want to ignore it until you can have it look at by a transmission shop since the problem may just be electrical in nature ie. a loose connection. you may want to have the transmission serviced since it has been driven so little and have the transmission looked at when you have it done, remember a transmission should be serviced every 24,000 miles.

[Leonardz]

Thanks - actually I figured it out.
I put in a new battery & did not take car through the driving sequence, as described in manual, to reset the computer.

[willloyd]

Can you share sequence described in manual to reset computer? I've misplaced my owners manual.

[Leonardz]

Driving sequence for battery change as follows:
1) Drive in typical city - stop & go - traffic for at least 10 minutes - after reaching normal operating temperature.
2) Idle vehicle for at least 45 seconds - the accelerate at part throttle to near 45MPH
3) cruise & maintain a select speed in the 30-40MPH range on level road with throttle held very steady for at least 1 minute
4) Repeat #3 but in the 40-65MPH range for at least 1 1/2 minutes
5) OBDII drive cycle is complete.


For the flashing O/D light - you might also want to check all your plug wires as this could also cause problem.

[willloyd]

Thanks for providing codes.