Marauder T Converter in a 99 Marquis

[Hawkszone]

I am having an intermittent shudder/vibration at highway speeds (65-75MPH) in my 99 Grand Marquis HPP.

After driving it and experiencing the vibration, my mechanic is pretty much convinced it is the torque converter shuddering.

First of all - does this sound right? I have always thought the torque converter clutch is pretty well locked up at anything over 50MPH and shudder is typically under light throttle between 35 - 45MPH.

Secondly - if a transmission flush (done every 30K) and a little Dr. Tranny Shudder Fix doesnt' cure it - is a Marauder TC a simple bolt on replacement for my car or will I need some other parts, computer flash, etc? Should I go with the 03 or 04 Marauder TC?

[Raudermaster]

Well I was going to ask if you had a chip because I know when I had my '95 tuned, I had it tuned for such hard shifts then I felt the same thing you're probably expieriencing. As for the shuddering though, I'm unsure what else it could be other than the TC. And for the bolt on, I believe it would be a bolt on, but don't quote me.

[RF Overlord]

Hawkszone, if you've had transmission flushes done every 30,000 miles and were using Mercon V (you WERE using Mercon V, right?), then you shouldn't be experiencing TCC shudder, unless the TC is bad. How long ago was the last flush?

[Hawkszone]

The last flush was at 85K and it now has 106K so it would still be a little early. Now the last time the flush (full gravity drain, convertor and all, new filter) was performed my mechanic messed up and put DexIII in there. I had him drain it out 2 days later and refill with Mercon V.

I have also put Dr. Tranny Shudder Fix in there right after that flush as a preventative measure.

Even though my mechanic is almost certain it is the TC, he does admit the vibration could be the rear end. Coincadentally the rear end was serviced about 3 months ago by this same mechanic. I doubt he could have screwed up anything doing a drain and fill with synthetic rear gear lube but you never know.

[93rev2sev]

Driveshaft imbalance?

[Dennis Reinhart]

I am having an intermittent shudder/vibration at highway speeds (65-75MPH) in my 99 Grand Marquis HPP.

After driving it and experiencing the vibration, my mechanic is pretty much convinced it is the torque converter shuddering.

First of all - does this sound right? I have always thought the torque converter clutch is pretty well locked up at anything over 50MPH and shudder is typically under light throttle between 35 - 45MPH.

Secondly - if a transmission flush (done every 30K) and a little Dr. Tranny Shudder Fix doesnt' cure it - is a Marauder TC a simple bolt on replacement for my car or will I need some other parts, computer flash, etc? Should I go with the 03 or 04 Marauder TC?


They work great I have them for 75.00

[KillJoy]

They work great I have them for 75.00


What do you have for $75???

:confused:

KillJoy

[Dennis Reinhart]

What do you have for $75???

:confused:

KillJoy

It happens whe you get your age, ha ha


I have Marauder stock converters for 75.00

[KillJoy]

It happens whe you get your age, ha ha


I have Marauder stock converters for 75.00

Listen here Pappy!!!

:D

[BigCars4Ever]

Torque converter shudder will feel like your going over a washboard road for a second or two every time the lock up engages. The lock up springs are a weak link in the TC and once the converter starts to slip a little it is the beginning of the end. It does not matter how often you change your fluid cause I change mine every 25K since new and still had a converter go at 106k miles in our '00 GM. Be sure the converter engages the pump. There should be about 1/8th inch of clearance or more between the flex plate and the converter body once the bell housing is bolted to the block. Fords are a little trickier than GM's to engage.

[thePunisher]

when the shudder happens just push the brake pedal lightly....this should disengage the t/c. so if the vibration stops when you press the brake pedal it is definitely the t/c.....

[chader]

]when the shudder happens just push the brake pedal lightly....this should disengage the t/c. so if the vibration stops when you press the brake pedal it is definitely the t/c.....This is correct...thr t/c shudder is very common to act up at 30k...ask any cab or cop car driver......

[Drock96Marquis]

Perform a fluid change with fresh Mercon V as outlined in this article:

http://www.crownvic.net/tech/transservice.htm


Your stock convertor is 12", HPPs recieved them smaller t/c theyear after (00, CVPI begain using 11.25" in 99 and TC Touring since 98)
To use a MM convertor you will also need an 11.25" bolt circle flexplate.


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Dennis: Only $75? Im gonna shoot you an email.