97 F-150 transmission kicks out of over drive after it warms up. When you push the Overdrive Button on shifter it will not go back into overdrive. When I slow down and start moving again it shifts real hard from 1st to 2nd and from 2nd to 3d gear.
I plugged in the “decoder” and the code PO755 is displayed, the check engine light is on as well.
What can I do to fix this or do I need a new transmission?
You MAY have an electrical problem inside your transmission or a wiring problem going to your transmission.
Please find a professional that can perform all the tests needed to diagnose and repair it correctly. In most cases it is the TCC (Torque Converter Clutch) solenoid that is at fault. This requires pulling the transmission pan and replacing the solenoid valve assembly.
If you think you have what it takes and you have a weekend or two to spare, then go to www.alldata.com and purchase a year online subscription repair manual for less than $25.00
You will need this information BEFORE you can attempt to repair your truck. There is a possibility that the Torque Converter itself may be damaged if you have high miles and you have towed in overdrive. Towing or hauling heavy loads in overdrive is a big NO-NO. Especially when you have to pay big dollars to fix something that was preventable by reading your owners manual!
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