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Discussion Starter · #1 ·
2001 Dakota SLT 4x4 3.9L V6.
The transmission is acting up.

Fluid was overfilled / foamy, replaced fluid+filter & found overdrive unit 5" wave snap ring in pieces in bottom of pan (common issue).

Shifts & drives fine when cold.
Acts up when warmed up.

I'm contemplating removing the overdrive section from a junkyard '02 4.7L 4x4 (45RFE?) & swapping that if it does not have the same problem ($139, less than cost of the tools required to depress the killer spring and line everything back up on reinstall of new $5 snap ring).

However I'm concerned about the rest of the transmission. Would this overdrive snap ring issue allow it to drive fine when cold but have intermittent slipping/surging problems while driving down the highway once hot, and also cause delayed shift from first to second afterward the former begins occurring once warm?

I'm going to speculate that it has other additional problems in the transmission that are causing those issues.


Could this be related to a loose TV cable and loose bands all needing adjustment? Or could this have something to do with the common governor solenoid / sensor issues these transmissions are notorious for?
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