pearljam724
Well-Known Member
Even though I consider myself mechanically sound on a do it yourself level. I’ve never worked on cars for a living or very regularly at all for that matter. Since the day I bought my car. About a year and 3k miles ago. The tranny would never kick down. Otherwise, it shifted well. I tried everything imaginable to no avail to get it to work. Tweeked pressures and adjustments a thousand times. Nothing worked.
As a last resort, I decided to rebuild the 904 auto tranny myself having known very little about transmissions prior. I decided, if I screw something up worst or it still doesn’t work. I ll take it to a professional afterward. I studied the 904 for a couple weeks prior to my decision.
I rebuilt it, still installed under the car. With no lift, only raising the car on jack stands.
Polished all valve body valves, polished governor weight. Disassembled and cleaned valve body. Replaced actuator and accumulator seals, replaced tail housing bushing/seal and fixed all other leaks with replacement seals. I probably have 4-8 hours invested total stretched out over a week or so. I buttoned it back up. Took it out on the nearest highway. Hammered down. Holly ****, it works !!! Ya hoo !!!!
Saved myself a little over a grand too.
As a last resort, I decided to rebuild the 904 auto tranny myself having known very little about transmissions prior. I decided, if I screw something up worst or it still doesn’t work. I ll take it to a professional afterward. I studied the 904 for a couple weeks prior to my decision.
I rebuilt it, still installed under the car. With no lift, only raising the car on jack stands.
Polished all valve body valves, polished governor weight. Disassembled and cleaned valve body. Replaced actuator and accumulator seals, replaced tail housing bushing/seal and fixed all other leaks with replacement seals. I probably have 4-8 hours invested total stretched out over a week or so. I buttoned it back up. Took it out on the nearest highway. Hammered down. Holly ****, it works !!! Ya hoo !!!!
Saved myself a little over a grand too.
Last edited: