Replaced transmission

Tiny
FURBALL2119
  • MEMBER
  • 2003 DODGE NEON
I replaced the automatic transmission now the cat shakes really bad the whole motor and transmission moves to the right then back again over and over again I replaced the left cv axle and the left motor mount any ideas on what I should try now
Monday, April 15th, 2013 AT 6:53 AM

2 Replies

Tiny
MKBARTRAM22
  • MEMBER
  • 6 POSTS
The same thing happened to me a few days ago I would replace both axles because after the transmission has been moved a little it can cause the axles to wear at a different spot making it shake.
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Wednesday, February 24th, 2021 AT 1:52 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,870 POSTS
The right half shaft causes most of the problems but that wear is often overlooked by the rebuilders so a rebuilt half shaft can have the same problem. The wear is usually too little to feel. You have to clean the housing, then look at the reflection when you shine a light in it.

One of the engine mounts sets the position of the engine and transmission. You may be able to shift them a little to reduce the shimmy. Also be sure the ride height is correct. Anyone at a tire and alignment shop will have a small book that shows where to take the measurements and what they should be. Ride height is critical in reducing drive line vibration and cv joint housing wear. It also has a big impact on braking, handling and tire wear.
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Wednesday, February 24th, 2021 AT 1:52 PM

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