I'm having issues with my '75 240D not wanting to up-shift into 3rd. Even after a valve body swap. I feel like there may be a modulating pressure issue. Kickdown solenoid has been ruled out as the culprit. I have the "Technical Data Book" for 1975 and wanted to see if I can try myself at diagnosing what is going on. Has anybody tried this on their own before? Are the test ports all the same threading? I'm assuming I need a gauge that can handle 250psi as well.
Any insight is appreciated.
The following got me thinking since my speedo needle bounces quite a bit at low speeds.
Quote:
Originally Posted by Frank Reiner
vw:
Per the trouble shooting chart in the FSM there are three possible causes for not up-shifting past 2nd:
1) Selector sleeve detached. [Not likely if you can shift into N,R, & P]
2) Jammed 2-3 command valve.
3) Low governor pressure.
Does the speedometer work correctly, or does it skip and/or fluctuate?
Improper speedo operation and low governor pressure are linked. Both the speedo gear and the governor are stacked on the output shaft, and clamped by the nut that secures the three-legged output flange on the shaft. If the three-legged flange wears a bit, and clamping force is lost, then both the governor and the speedo gear are free to not turn with the shaft.
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