I have a problem with upshift on my 87 300D
It shifts fine from first to second. When it is time to shift from second to third, it hangs. It will hang until it gets well over 3500-4K RPM before it shifts(depending how hard I am accelerating) Then, when it does shift to third, it goes immediately into fourth.
I can lift on the accelerator, and it still doesn't shift from second to third until I re-accelerate. I can also put the gear selector in third, and then it will stop in third gear, and then I can manually put the selector in Drive, and it will shift into fourth at the appropriate time.
Some people have told me that it is the modulator, but if that were the case, wouldn't it have issues shifting into all the gears, not just one?
Some have suggested vacuum, but I dont have any other vacuum related issues, and then again, if it were vacuum, wouldn't it have issues shifting into all the gears? I have put a vacuum gauge on the vacuum line going to the modulator, and it holds vacuum just fine, so I dont think there is a pinhole, or anything else wrong with the modulator.
If it were the filter, again, I would think that it would have issues shifting into all the gears.
I use dextron III with Mercron. The fluid level is full, and the fluid look very clean, and no burning smell at all. I have taken the pan off, and the pan is also clean(no metal shavings, dirt, etc in the bottom of the pan)
I suspect that one of the Bands needs to be adjusted. Can the Bands be adjusted externally on this trans??
Any thoughts/comments?? Thanks