I think you guys are missing my point... I understand that a tranny overhaul
might be the only solution, but...
It's the "WIERD PART" that is confusing me.
This tranny drives out great! It doesn't slip. It shifts out just fine. It
pulls hard. He's even taken the car on a couple 1000 mile trips. Then, after
about 2 months, when everything is going great, you get in one day and it
will not go forward. After a day or two of rest, you can get in and drive
away like nothing was ever wrong, and you won't have to worry about it for
about 1 1/2 to 2 months.
The last time it gave us trouble, we disconnected the battery overnight. The
next day everything was fine. Before, it seemed to have taken 2 or 3 days to
I'm looking for a logical explaination of why this tranny would act this
Likely something is sticking in the valve body, either a solenoid, actuator,
or check valve. After the vehicle sits, the sticking item "loosens up"
either becasue it oozed slightly, or broke loose do to temperature cycling.
If it is a solenoid sticking, then maybe you won't damage anything by
driving the car. However, it is possible that driving the car with a
partially engaged actuator or a leaking check valve might lead to further
damage. At the very least I'd consider having the fluid flushed and the
filter replaced. I don't see any way it is going to get better if you do
If this is one of the ford transmissions with the electrical
control/switch on the side of the tanny case, it may be that the
switch is bad. Comparatively speaking, it's relatively cheap to
replace the switch. I think it's called the MPC but don't recall what
that might stand for.
FWIW, Isuzu's are famous for a variation of this. Something about
spiking voltage tweeking the computer. With ours, it can be working
fine and then you pull up to a stop sign and it doesn't want to take
hold. Turn the engine off and restart and its back to normal. When I
put a new alternator on ours it improved it 90%. Still does it every
once in a while.
On Wed, 19 Dec 2007 07:01:57 -0500, firstname.lastname@example.org wrote:
I would junk a car before I let anyone from Aamco near it.
Anyone using Aamco should bring their own jar of anal lube.
Spend your time and money on something worthwhile and give
it to a wineo! Their are many good independant shops who
are competent and reasonably priced.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.