It could be plugs and wires. It happens under light throttle between 30
and 50 MPH. Under heavy throttle I don't think it happens. I just
noticed the connection between the check engine light and the problem.
The engine usually runs smooth but sometimes for a few seconds it
shakes a little.
When my fluid needed changing ('95 CV, by the way) I got a shudder like
going over rumble strips. It was about as loud and was intermittant -
brupp, brupp, brupp. I had to drive up a hill every day and was usually
doing 35-40 at the time. Fluid and filter change fixed it. Use Mercon V
fluid. TCCOA has a good guide for doing it right.
If it is more at highway speed with light throttle, suspect plug wires. Get
good ones and replace the plugs, too. Be sure to blow the dust and crap out
of the plug area before you remove them.
One Lincoln dealer said they wouldn't do it. They said it will ruin the
transmission. Also is this really true that I just read? disconnecting
the battery will cause basic settings of the vehicle's computer to be
erased (e.g. idle settings, fuel trim settings, transmission shift
The computer 'learns' as you drive. Removing the battery cable for a while
can erase the stuff it learned but the basic stuff remains. I can't tell
much difference with my car.
There was a lot of confusion about the backward compatibility of Mercon V
but I thought it was OK in the 4R70W trans we have. I know the fluid I used
had both ratings but a lot of them don't. I would be hypocritical if I said
to ignore the dealer. Almost all repairs I can't do myself get done at a
(Years ago, dealer repair shops weren't so good. Now they are fairly priced
and have very well-trained mechanics, IMHO.)
I'm sure it's torque converter shudder. Here is the deal. My check
engine light is on sometimes
but not all the time. The only time I have the torque converter shudder
is when the check engine
light is on. Could this be a strong clue to what is actually wrong? If
anyone knows please post
and I will be checking back. Thanks
=======have had this happen before. go to lincoln dealer and get a bottle of
shutter guard additive. it's a small bottle. pout it in and it
usually fixes the problem. don't know why lincoln won't tell the owners
this problem exists, but somehow, they seem to sell the fix at their
knowledge is power - growing old is mandatory - growing wise is optional
"Many more men die with prostate cancer than of it. Growing old is
invariably fatal. Prostate cancer is only sometimes so."
A parts store that sells Lubeguard products will have "Dr. Tranny'sInstant
Shudder Fixx". It comes in a tube and costs about $10. It worked for me
for the 6 months it took me to get around to changing fluid. I think Lucas
makes a good one, too.
You can go to AutoZone and they will read your codes for free. Make a note
of them but don't buy anything, just report them here.
There are quite a few very good mechanics around here. (It's prolly easiest
to get codes while the light is on.)
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