Question about 1997 Ford F250 SuperCab
I have a 1999 Ford F-250 Super Duty and the transmission will work good for 20 minutes or so and then start shifting very hard. The overdrive light on the shifter lever will start blinking at the same time.
Posted by Anonymous on
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Posted on Jan 02, 2017
The blinking overdrive button is telling u that a serious fault has occurred in the electronic controls or a mechanical fault such as excess slippage is occurring.
Posted on Nov 06, 2008
It sound is if your ABS/Speed sensor is the culpret. Try this fairly inexpensive repair before you bring it in for a Diagnostic, which can run anywhere from $89.95 & up. Go to the local ford dealer in your area and ask them for the ABS Sensor in your rear axle differential. The base part number being 9E731. This part runs roughly for about $20.00+ and your own time to replace it.
Posted on Mar 23, 2009
Hi, this is a defective OD shift solenoid that is located inside the trans pan. you will have to drop this pan in order to extract it for replacement. this solenoid, if damaged, cant initiate the shift sequence required for the OD to engage during operational procedures.
Simply replacing this solenoid will fix this issue.
NOw, concerning the erratic shifts. this is isolated within the transmission control module. it seems to be malfunctioning. you will need to replace this module as well.
Posted on May 21, 2009
Same problem with my '99 Super Duty. The speedometer was also malfunctioning. Replaced the ABS sensor mounted on the rear transaxle. Costs approx. $30 and fixed the problem.
Posted on Aug 21, 2009
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