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Okay okay. So i dont know if my issue has been discussed and yes i did do a search but didnt find a definitive answer. I have a 97 tbird with the 3.8, well i have noticed that when im driving the car with the overdrive on the car will rev in an almost a neutral state to 3-4k rpms if i give the car more than 1/3rd throttle before it catches and goes. However, if i turn overdrive off then the trans suffers no type of slippage any any gear. Yes i have checked fluid. I am pretty mechanically inclined , however i have by no means ever been very trans or rear end savvy even though i do understand their basic design and function.
My question is what should i suspect to b the culprit. Overdrive bands, etc.

Oh and i havent had the car very long so im not sure how bad it would have been beat on lol. Any and all help is greatly appreciated.
 

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1997 Thunderbird 4.6, 1998 Mark VIII LSC
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If it slips only in overdrive, then it's possible it's the band. One way to check would be to put it into manual 2 and see if it slips.

If it slips before you take off in 1st, then that's a different story. Having O/D lockout on or off has absolutely no effect on the lockup schedule or 1st, 2nd or 3rd gear's behavior. If it revs up and takes off with a bang in 1st, then your forward clutch is toast.
 

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In manual 1 and 2 and drive with OD off there is no slippage. In fact if im on interstate and need to pass someone i usually let of the gas and hit OD off wait for it to downshift (if i dont it revs (forgot that info lol)) then pass the car and then turn OD back on.

Oh if it matters car shows 162k
 

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In manual 1 and 2 and drive with OD off there is no slippage. In fact if im on interstate and need to pass someone i usually let of the gas and hit OD off wait for it to downshift (if i dont it revs (forgot that info lol)) then pass the car and then turn OD back on.
I just recently developed that same problem and use the same workaround lol
 

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Maybe there is scuffing/galling in the 3-4 shift actuator bore from the rod? Hard to know for sure. I'm no trans expert.
 
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