I would like opinions on what failure could cause the following symptoms on a
98 Windstar, 3.8 with AOD. The trans was professionally rebuilt about 15,000
miles ago and worked normally till today. The fluid is clean, doesn't smell,
and is not low on the dipstick.
It drives out perfectly for the first few minutes. Then starts to slip no
matter what gear it is in, and will never go into OD. If you stop, it acts
like it's in neutral, then it catches but chatters violently as you drive
away for a few seconds. Maybe/maybe not will shift and pick up speed if you
really play with the throttle. Will not climb a hill at all, slips very badly
Here's what I can't figure out.....if you turn off the engine for even a few
seconds and restart, it will catch in gear and drive out perfectly with no
slipping, shifting properly, and even go into OD. After a couple minutes,
maybe a mile of driving, the cycle repeats and it starts to slip again
eventually no longer moving. I even tried this at 40 MPH, shut the engine off
for a few seconds, coasted and restarted and it caught and drove perfectly
The only thing that comes to my mind is something like a clogged filter,
which seems impossible due to the recent rebuild. I believe that it can't be
in the electronic controls since there's no check engine light, nor any
stored coded when we had them read.
What can possibly cause this weird failure? Is this a known problem that's
easy to repair? Definitely not interested in having expensive repairs done
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