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Harsh Gearchanges on a '67 Sedan DeVille HT

Started by mbracing, Yesterday at 02:15:30 PM

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mbracing

Yesterday at 02:15:30 PM
Hallo my '67 Sedan DeVille HT, bought recently, has an harsh gear change specially from 1st to 2nd in the left "Drive" position, if I move to the right "Drive" selection then gearchanges are smoother. Gearbox oil and filter has been changed recently by the previous owner, and the car has a low mileage. There might be an additive or something else to try before thinking about an eventual transmission overhaul?
Kindest regards from Italy.
mbracing

Alan Harris CLC#1513

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Today at 12:16:56 AM
1. Is your fluid level OK? 2. What kind of fluid did the previous owner use? I do not know what kind of fluid is sold in Italy or if Dexron fluid is commonly available there. 3. Does the fluid smell burnt? If it does, you might have a serious problem. 4. A rough shift could be a problem with the vacuum modulator. Make sure that you are getting vacuum at the line into the modulator and that no transmission fluid is in the line. If there is fluid, it means that the diaphragm inside the modulator is leaking. Buona Fortuna!
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