Question about 1989 Lincoln Town Car
The tranny will shift fine up to and including 3rd, but then it will not go into OD automatically or at all. We had the tranny filter actually changed out to a new one and added new fluid and the fluid is where it should be, it is not low. We also had a shift link from the carb linkage to the tranny checked to make sure that it was not loose as we read that an old link connector on one end can become weak and break and maybe cause it to be a little short to put it into OD and that was OK. I read one location that this tranny MAY have a lockout feature so it can be set not to go into OD????? where maybe a button was pressed on the dash or the shift lever to set it this way unknowingly??.......but not sure, what do you think. It runs and shifts GREAT, but will not make it to OD
There is no OverDrive gear in the transmission. The fourth speed is achieved by locking up the torque converter while in third gear creating a input shaft to output shaft ratio of more than 1 (the infamous over drive). If you do not feel it shifting three times while accelerating up to 45 mph then there is probably a situation with the torque converter.
Posted on Nov 02, 2011
Check for button on end of shift lever.
Posted on Feb 25, 2009
The button resets everytime the ignition is turned on, so it can't be left off, have the test done, it may be a faulty Vehicle Speed Sensor (VSS) that is the cause, this sensor is the signal the trans computer uses to know when it is time to shift to OD> Hope this helps. P.S. I am a 30 year Ford new car dealer technician.
Posted on Feb 25, 2009
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Posted on Jan 02, 2017
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