My 94 Towncar will sometimes hunt in and out of overdrive for no reason. It
has nothing to do with loads or temperture. I suspect a sensor problem but
which one and where is it? Any help please. All other shifts are normal and
there are NO other symptons. It happens any speed from about 35 to over 60.
Shuting the overdrive off will make it go away.
You should be able to take the car to a competent dealer shop or a
competent transmission shop and have the codes from computer that
controls the controls the transmission. These codes should narrow down
which sensors or whatever might be bad.
Likely the MLPS. Electronic switch on drivers side of tranny.
Pics etc are about half-way down the screen.
Symptoms were similar on my '94 Tbird LX V8. As if I had shifted
from 3rd or 4th to neutral. I set the shifter to neutral, then to D and
it would get back to normal.
Maybe $300 for a dealer fix. Details if you wanna repair yourself.
"Well, there's two trains runnin'.
Ain't neither one goin' my way.
One run at midnight,
the other run just before day."
- from "Still A Fool", Muddy Waters, maybe 1949
Most likely the MLPS (nuetral switch in the good ole days
jargon) The replacement will have an updated harness
connector. Comes complete with instructions. If you have a
few metris tools, it is about a 30 minutes job once you get
under there to do the complete job following the instruction
pamphlet. Cost is usually under $50 in the after market or
closer to $100 at the dealer. Most dealers will get about 2
hours pay including diagnostic plus parts.
I just changed the MLPS and it fixed the very same problem. This is
after taking it to the Ford dealer and there diagnosis was I need a new
transmission. Yet true professionals! A MLPS ($90) and transmission
fluid and filter and we have driven it 3000 Miles with no problems. If
when you remove the MLPS you can rotate it by hand, you have found the
problem. The new switch has much tighter contacts that you will MOT be
able to rotate by hand. If I remember right I had to replace this with
the car in Neutral to get the alignment bars right. Make sure the
parking brake is on and level and wheels blocked on this one.
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