SwedenStefan

Thanks guys I doent know exactly which transmission I have, but it is 4-speed, and I can read: PBS-64- 98195 on it. I start with an oil and filter change, and a check of the vacum- hose and modulator. Then I think I have to order the shop manual from Rockauto.

Hi. I have just bought an 1964 bonneville. And if I put my Hydramatic in to Drive, and accelerate, it works just fine, it change gears from 1 to 4 just fine. But, if I then move my foot from the throttle, so that the engine goes down in to idle, the transmission drops gear!? So then, I have to put it in to 2:nd to make it drive, and when I get som speed, I can put it on to Drive. What to do? Can it be a slide in the hydraulic that are worn out, wrong kind of oil? or is is an complete overhaul that has to be done? In that case, can I do it by myself? Is there an good place to buy overhaul kit from? I'm very grateful for tips and tricks.