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 Post subject: Transmission Jerks 545rfe
PostPosted: Wed Nov 01, 2023 5:42 pm 
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Joined: Sun Dec 18, 2022 4:48 am
Posts: 6
Hello everyone,

Our transmission has been rebuilt and works great but gives us a jerk when we leave the R, no matter where we go (D/N/P).
And also when we are going downhill and letting the car roll, it changes gear with a jerk.
It's light and doesn't interfere with driving, but we'd like to be sure that it's not hiding something.
The gears otherwise shift very well in both directions.

Thank you for your help

PS : We have a grand cherokee from 2005, the V8 Hemi.


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 Post subject: Re: Transmission Jerks 545rfe
PostPosted: Wed Nov 01, 2023 9:35 pm 
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Joined: Sat Aug 24, 2013 11:36 pm
Posts: 7173
Location: Central GA
Jeeper45 wrote:
Hello everyone,
Our transmission has been rebuilt and works great but gives us a jerk when we leave the R, no matter where we go (D/N/P).
And also when we are going downhill and letting the car roll, it changes gear with a jerk.
It's light and doesn't interfere with driving, but we'd like to be sure that it's not hiding something.
The gears otherwise shift very well in both directions.
Thank you for your help
PS : We have a grand cherokee from 2005, the V8 Hemi.

Most likely the factory boomerang bushings are worn out allowing the jerk or clunk when downshifting or upshifting.
Best option is to replace the weak OEM rear upper control arm with a IronRock super heavy duty control arm.
https://www.ironrockoffroad.com/product ... short.html

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