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fastyz400
Dodge Dakota
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8/17/2004
16:16:42

Subject: Vibration / Shudder
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OOK,

Hereís the story. After you have had your tires balanced and rotated 4 or 5 times, checked for roundness on your tires, making sure that all your suspension components are tight. Your U-joints are ok. So, now what?

This is where it getís interesting. Who would have ever thought it would be your transmission fluid. The vibration or shudder in your vehicle comes and goes during mild to mid acceleration. Sometimes, itís constant then you start going down a hill all of a sudden your truck smooths out. Only the next incline it starts to shake like itís gonna fall apart. This is whatís known as Transmission clutch slippage or Torque converter shudder. When the old oil getís depleted of itís additives, this is what starts to happen. The color of your Transmission fluid could be still red. It doesnít have to be discolored. Dodge transmissions are very sensitive to this as I have found out.

The fix: Have your transmission flushed and refilled, if you are over 60,000 miles, with ATF+4 or ATF+3. Do not mix. My experiencing from mixing is above 105 deg outside temperature, it starts to slip and shudder. I live in Phoenix, where itís frekin hot. So, donít let the dodge dealer tell you itís mixable. Below, 90 deg. I have no problem. It is advisable to flush because, ATF+3 is dino oil, which leave behind sludge. It could have been the sludge and grime that a simple change could not get out. It could be sludge buildup in the torque converter or transcooler up front. Anyway, I did the flush and everything is fine. Today, 110 deg. Outside, no slipping or torque converter shudder with ATF+4 after the flush. It runs smooth like the day I got it.




Mr.Sleepy
Dodge Dakota
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8/18/2004
08:43:57

RE: Vibration / Shudder
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Thanks for posting, this is something that I had wondered about. I'm going to have this done before I go on vacation.



Nick
Dodge Dakota
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8/18/2004
10:54:56

RE: Vibration / Shudder
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Thanks for the info. I'm from the "mild shimmy and shudder" post. I took the truck in to the dealer on Monday. They spent all day with it, took it for two test drives, even checked the alignment, and couldn't feel any shimmy or shudder. Maybe that's because they test drove it on pothole and expansion-joint ridden rodes, where the truck shakes so much anyway you wouldn't notice the shimmy. So when I picked it up, I asked if I could go on a test drive with the mechanic on a smooth road, but they didn't want any part of it and told me to take it to another dealer. Last time I go to that Dodge dealer!
So yesterday I took it to a tire dealer for a wheel balance, and the shimmy is gone. It turns out three wheels were out of balance. When I brought it in to the Dodge dealer and complained of a shimmy at all speeds, the first thing they should have checked was the wheel balance.





.boB
Dodge Dakota
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8/18/2004
10:55:01

RE: Vibration / Shudder
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I never would have thought of that. I'd have spent weeks tracking down all the stuff you looked at. Thanx for the insight.

The service manual calls for trans service at 36,000 miles.



fastyz400
Dodge Dakota
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8/19/2004
03:24:39

RE: Vibration / Shudder
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Nick,

My experience with any dealer weather it be GM, Ford, Dodge or any car make. They are scared of vibration problems. As you have found out first hand. 90% of the time they will say the following 2 lines:
"There is no vibration" or "It's suppose to be there"
As if you order the vibration package with your truck. lol

It took me almost 5 weeks to track this down. Took the front driveshaft off to isolate the problem. Changed the trans mount, wheel bearing, driveshaft. So, the only other item was trans and torque converter. And bam, there it was.

No dealer would have taken the time to do this.



fastyz400
Dodge Dakota
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8/19/2004
03:32:32

RE: Vibration / Shudder
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Oh,

Many Transmission shop will offer a free diagnostic of your torque conveter and Trans. They will let you know if anything is wrong. And most of the time it's free. :)

So, after you've done the rest, goto a trans shop. This is only my cheap a$$ opionion. lol



fastyz400
Dodge Dakota
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8/24/2004
18:21:42

RE: Vibration / Shudder
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Bad news,

After replacing the fluid, it was smooth for about 200 miles. Then the vibration came back.

I took it to a trans shop. Engine code reads bad torque converter :( So, i just told them to rebuild the tranny too. Man, they found 3 broken retaining clips that hold the different clutch pack together and a washer looking thing which should have splines on it all stripped out. Then a bunch of sludge inside my solinoids.

So, now, i am definetly going with Amsoil. No more sludge. I hope.

Cost: $2000 (This ticks me off, only 65k miles)
2000 Durango 5.9 with an 46RE Tranny. I even changed the fluid and filter once a year. That's what's so sad.



Daniel Soto
Dodge Dakota
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6/30/2016
21:53:06

RE: Vibration / Shudder
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Message:
Hi i have this situation 46DE 1997 Dodge ram
transmission has been rebuilted and when installed
shaft with heavy vibration when you ask for power.
If you accelerates slowly no problem but ir you do
it rapidly it happens.shift good bit ir you
accelerate yo increase power ir start the vibration
too. Full power in reverse but low power in Drive
can you help me please. Thanks



Daniel Soto
Dodge Dakota
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6/30/2016
21:59:46

RE: Vibration / Shudder
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Concerning to 46DE vibration excuse me i found
some writing errors. Id like to receive comments
that help me to find a solution. Thanks



Edward Seay
Dodge Dakota
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8/04/2017
18:47:48

RE: Vibration / Shudder
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every since i put new brake pads on my 1999 dodge
Dakota have vibration bad at 40 mph thats with
out hitting brakes



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