|Quote, originally posted by umeng2002 »|
A few months ago it started to take about 10 seconds for the car to move forward when you put the selector in Drive, 1, or 2 position.
Now it takes like 2 minutes.
I've changed the fluid 4 times to get most of the old fluid out, but that didn't really work.
It goes into Reverse as fast as it should.
Oh and once it finally gets going, it totally fine. Once the tranny gets cold, it takes takes 2 minutes for drive to engage.
So it operates normally, once it's warmed up and achieves drive finally?
Perhaps some crud was left inside the trans during overhaul that finally made it's way into the valve body. Then, while it's cold and tolerances are closer (steel valves in aluminum bores) a shift valve is getting stuck part way.
If you're feeling advernturous, remove the valve body and disassemble it. Clean it and each individual piece with brake cleaner and lint-free rags. reassemble the way it came apart (verifying with bentley diagrams in case the overhauler buggered something up.)
No special tools needed. a 13mm socket, a 10 mm socket a phillips #2 is it. A spotless, dust-free work area, of course, and about 2 cans of brake cleaner. Get a piece of styrofoam and draw the outline of the valve body on it, life sized. Take a bunch of toothpicks to make little corrals in each component position on the VB outline. As you disassemble, put each piece in the correct place and orientation. Once the VB is totally naked (watch out for the little valve balls) use an old toothbrush or industrial plastic bristle brush and brake cleaner to make both halves and the seperator plate look like new.
Then clean each individual component lube with fresh ATF and install into the proper location. Reassemble the valve body halves, clean the filter screen and put it all back together using the bentley's torques.
See what that does. If no difference, there's probably a damaged seal on the work piston somewhere. (which could affect pressure as mentioned above)
This isn't a difficult job, but you must be extremely conscientious of PERFECT cleanliness and how everything came apart.
Modified by Rabbit6 at 10:38 AM 2-14-2010