What is this sound?
Thread Starter
Teching In
Joined: Jul 2006
Posts: 15
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What is this sound? Not an LSX, but there's a lot of motorheads on this board so maybe someone can help me. I know I have a Paramount Stage 2 VB installed (previous owner) in my 08 Grand Cherokee SRT8. We have pinpointed the "squeal" to the transmission. It isn't making any vibrations, clunking, I can't feel anything etc - with foot on the brake, going from P to D or D to R or R back to D, without releasing the brake, it makes a low-volume squeal as it goes into the selected gear. It does nothing when going into N. It'll also do it upon shutting the ignition off. It sounds hydraulic in nature - like liquid or air squeezing past something. My guess is this started after the install of the Stage 2 VB - whether it be the VB itself or one (or both) of the pressure solenoids. The trans fluid has been changed and it made the sound before and after with no changes. My mechanic and I are thinking the brown top pressure solenoids need to be replaced. Would these be the cause of such a noise? Is it more likely that the VB itself is the issue? Something else? Again, it isn't effecting drive-ability or causing any problems, the sound is just annoying as hell and kinda embarrassing. I sent the vid to Paramount, and their response, as I expected, was "most likely your trans, not our VB."
https://www.youtube.com/watch?v=lfDS...ature=youtu.be
https://www.youtube.com/watch?v=lfDS...ature=youtu.be
Thread Starter
Teching In
Joined: Jul 2006
Posts: 15
Likes: 0
I have. No answers. I would bet the sound isn't specific to a brand of trans. Surely someone on here has heard a similar sound out of their (or any) auto before. I figured someone more mechanically inclined than myself would be able to hear that and either pinpoint it or give me a couple of things it could be.
Moderator
Joined: Aug 2010
Posts: 7,323
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From: Ann Arbor, MI
Sorry to hear that the Chrysler forum(s) is not responsive.
There have been very few mentions of squeals or other bad sounds coming out of the 4l60E and 4l80E transmissions discussed in this forum. Most complaints about strange noises are due to flexplates, u-joints and worn or new-urethane trans mounts.
There have been very few mentions of squeals or other bad sounds coming out of the 4l60E and 4l80E transmissions discussed in this forum. Most complaints about strange noises are due to flexplates, u-joints and worn or new-urethane trans mounts.
