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one will be earth the other two to the others stop you engaging overdrive in lower gears.u can extend wire and move switch to dash you can bypass lockout giving overdrive in all forward gears but engaging reverse with overdrive on will destroy the unit so not a good idea if the moved switch on dash is easier to miss
this is a common issue on these cars and since you just had the trans replaced, whoever did the work needs to check the connections at the switch and at the trans-and these switched go bad, but the fact that it was just done to too much of a coincidence.
Its most likely the vehicle speed sensor. Its on the transmission near the output shaft on the passenger side. Check the connection first, if it's good, change the sensor.
i've been told it's speed sensors. I have the same on my 1999, but my light flashes when i try to engage. And 1 out of 10 times, it engages and I can cruise. Just not worth it to me to fix. Ford never claimed there was a problem.
I believe what you're looking at is O/D off . This is the overdrive / overdrive off indicator. There is a switch on the gear selector lever to turn the overdrive on or off to change this. Press the button if nothing happens there is no change and it is flashing that usually indicates an internal transmission problem, check the fluid. Adjust the level if needed and make sure it is not black/burnt. Check for shavings in the fluid. If your tranny starts acting funky, you'll know why.
If your overdrive off light keeps flashing this indicates an electrical or mechanical fault has occurred with your transmission and a diagnostic code has been stored in your trucks on board computer. The stored codes can be read by diagnostic scanner and will aid in making a diagnosis of the problem that is occurring.
There is an electronic sensor on the outside of the transmission.Change the filter and fluid and replace sensor.The sensor costs around $150.
"High speed" probably is over drive,so if it is turned off,it can't engage.I have found that cutting the overdrive switch on and off can cause excessive wear and tear on the overdrive.
Regardless have the car scaned for a any codes thay is causing the problem. Just trying to keep the cost of repairs down by know exactly what the ECM has in it's memory for any malfunction that is creating your overdrive from engaging.
Good luck and hope this helps
just a guess but Id look for a bad chasis ground. I say this cuz the interior light switch for the door is a normally- open - grounding. The test for this theory would be to run a jumper wire from the neg batt terminal to the body, or from the eng to the body/chasis.
have someone scan it for transmission codes. Most likely it is your Torque Converter that is going out, but it could be a solenoid, What color was your fluid?
I just had this same thing happen with my Ford Taurus, and it turned out to be a bad key. The repair shop switched back and forth between two different keys we had with us 10 or 12 times, and it always started with the good key, never with the "bad" key. They said if the theft light is flashing quickly, that means the anti-theft system is engaging. If the anti-theft light just lights up, that is normal.
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