Transmission Shudder on 94 Crown Vic

[T.J. Powell]

I am experiencing what I classify as a Transmission Shudder on my 94
Crown Vic. I have read other posts ont his newsgroup and followed the
suggestions provided but I am still experiencing the problem.

History:
- 44,000 miles: Shudder was eliminated by doing a Transmission
Service, according to the invoice 10 pints of fluid was used
- 60,000 miles: Shudder came back. Ford Dealer put the car on
their computer and cam e to the following conclusions:
a) Transmission Service required
b) spark plug wires and plugs needed to be replaced
I had the dealer do the transmission service, according to the
invoice 11 pints of fluid was used. I personally replaced the
spark plugs and wires. The plug wires are Allied and came
with a lifetime warrenty. The plugs are OEM Motorcraft.

The most recent service seemed to eliminate the problem for a period of
about 1500 miles but now I am experienceing the problem again. It is
normally occuring under load (going up a slight incline) and appears to
be occuring between 3rd and 4th.

Any ideas what I should do at this point?

Thanks

[Mark Kovalsky]

T.J. Powell wrote in message <37066218...@tjp.com>...

>I am experiencing what I classify as a Transmission Shudder on my 94
>Crown Vic. I have read other posts ont his newsgroup and followed the
>suggestions provided but I am still experiencing the problem.
>
>History:
> - 44,000 miles: Shudder was eliminated by doing a Transmission
> Service, according to the invoice 10 pints of fluid was used

They only changed about half the fluid. This transmission holds 10-12
*QUARTS*, not pints.

Change all the fluid. Go to a place that has a T-Tech machine. Many
quick lube places have them. This will change all the fluid. Don't worry
about the filter-you've had it changed twice recently, it doesn't need
another change.

You could also find a shop that has a diagnostic scope. This can
check the wires as the car runs. You could have one or more bad
wires that can cause similar symptoms.

Mark '30 Ford Model 'A' '98 Ford Taurus
'59 Edsel Corsair '99 Mercury Cougar
'94 Ford Club Wagon w/7.3L Hypermax Turbo Diesel
'98 SunnyBrook 33FKDS Travel Trailer

[T.J. Powell]

I made a mistake, it was QUARTS. I dont know what I was thinking....

Any further input?

[Robert]

On Sat, 03 Apr 1999 13:46:48 -0500, "T.J. Powell" <t...@tjp.com> wrote:

>I am experiencing what I classify as a Transmission Shudder on my 94
>Crown Vic. I have read other posts ont his newsgroup and followed the
>suggestions provided but I am still experiencing the problem.
>
>History:
> - 44,000 miles: Shudder was eliminated by doing a Transmission
> Service, according to the invoice 10 pints of fluid was used

> - 60,000 miles: Shudder came back. Ford Dealer put the car on
> their computer and cam e to the following conclusions:
> a) Transmission Service required
> b) spark plug wires and plugs needed to be replaced
> I had the dealer do the transmission service, according to the
> invoice 11 pints of fluid was used. I personally replaced the
> spark plugs and wires. The plug wires are Allied and came
> with a lifetime warrenty. The plugs are OEM Motorcraft.
>
>The most recent service seemed to eliminate the problem for a period of
>about 1500 miles but now I am experienceing the problem again. It is
>normally occuring under load (going up a slight incline) and appears to
>be occuring between 3rd and 4th.
>
>Any ideas what I should do at this point?
>
>Thanks

Had a similar problem but in my case it was more of a sense the lockup
was slipping. Servicing the transmission did not help but changing the
plug wires eliminated the problem because it was actually a misfire.
The problem has not come back in over 20,000 miles. My understanding
of the problem with the plug wires is that the factory plug boots do
not prevent arcing to the head, especially if there is any moisture
present. Also the plug wires on these cars are very long, much longer
than typical V8s.

I would remove the wires and make sure there is no moisture around the
plugs. Based upon the design of the 4.6L head, moisture could easily
get trapped around the plugs.

I used Magnecore KV85 wires.
http://www.magnecor.com/

Robert

[Peter]

I have a 1993 Crown Vic. that had the same problem.
>93 Crown Victoria, transmission problem

>Yesterday I drove my car to Tucson and notices the
>transmission acting up. At highway speeds ( 70 - 80 MPH ) it feels
>like it’s shifting or maybe it’s slipping I can’t tell since it
>doesn’t have a tachometer. The car only has 53,000 miles on it. The
>fluid is at the full mark, it looks and smells clean.

>Trans. fluid was replaced at 43,000 miles, the torque converter was
>also drained during that service.

>SOME HISTORY: About 10,000 miles ago the overdrive was downshifting or
>maybe slipping at lower speeds (45 to 55 MPH).
>I also talked to a Ford technician and he told me to replace the
>trans. fluid, which seemed to of fixed the problem. I noticed, the
>fluid looked dark and had a burned smell before I did the service.

I took the car to the FORD dealer, he said it's a bad T.R. Sensor and
it will cost $250.00 to replace it with labor. I told them okay and
now everything works good.

Please let me know if this was your problem also..

Snip --------------------------------cut------------------
"Mark Kovalsky" <mkov...@prodigy.net> wrote:

>T.J. Powell wrote in message <37066218...@tjp.com>...

>>I am experiencing what I classify as a Transmission Shudder on my 94
>>Crown Vic. I have read other posts ont his newsgroup and followed the
>>suggestions provided but I am still experiencing the problem.
>>
>>History:
>> - 44,000 miles: Shudder was eliminated by doing a Transmission
>> Service, according to the invoice 10 pints of fluid was used

>They only changed about half the fluid. This transmission holds 10-12