Violent shudder w/ heavy throttle from stops. Worse when starting on incline. - JeepForum.com
 
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post #1 of 7 Old 12-04-2019, 11:01 PM Thread Starter
adubpacker
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Violent shudder w/ heavy throttle from stops. Worse when starting on incline.

The last big problem I’ve been trying to figure out since I bought this WJ. While at a stop if I press on the gas to hard the entire Jeep shakes. It feels like it’s coming from the rear axle causing the entire vehicle to shake. And both axles when I’m 4wd. It will continue to violently shudder/shake until I take foot off pedal. If I’m on a big incline from a stop and try to take off it happens way easier than on flat ground. I have to really baby the throttle for it to not start shaking on inclines. Sometimes I can get it to do it under 10mph with enough gas. Above 10ish mph I can put the pedal to the floor and it will take off as it should.

The Jeep doesn’t feel like it’s about to stall out when it happens. But when it does happen the Jeep barely moves if at all, it just shakes really bad. You have to release the pedal then reapply to go. There’s absolutely no grinding sound. You just feel your seat vibrating. Really the only sound you hear is everything in the cabin vibrating. It feels as if you are driving over rumble strips.

Brand new ujoints. Reset computer. No engine codes. Trans fluid nice and pink. Both differentials are perfect shape. The engine was swapped by previous owner maybe that has something to do with it? I’m totally stumped. Any ideas?

04 WJ. 4.0

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post #2 of 7 Old 12-05-2019, 01:28 AM
sdg3205
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Sounds like an issue with the torque converter, but that's an odd one.
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post #3 of 7 Old 12-05-2019, 04:52 AM
yoffer
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^^ I was going to say torque converter as well.

02' Grand Cherokee Limited, 4.7 Quadra Drive
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post #4 of 7 Old 12-05-2019, 09:28 AM Thread Starter
adubpacker
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Quote:
Originally Posted by sdg3205 View Post
Sounds like an issue with the torque converter, but that's an odd one.
Could the wrong trans fluid possibly cause this problem?
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post #5 of 7 Old 12-05-2019, 11:26 AM
sdg3205
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Quote:
Originally Posted by adubpacker View Post
Could the wrong trans fluid possibly cause this problem?
I couldnt honestly say. It's a cheap place to start - fluid, filters. I would not have high hopes.

When I had my TJ, I had similar symptoms when the fluid was really low from leaking out.
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post #6 of 7 Old 12-06-2019, 12:21 AM
Steve.A
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+1 with the fluid and filter change being the place to start. Hopefully there aren't any snap ring pieces in the pan when you get it off.
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post #7 of 7 Old 12-07-2019, 10:51 AM Thread Starter
adubpacker
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Quote:
Originally Posted by sdg3205 View Post
Sounds like an issue with the torque converter, but that's an odd one.
Question. I did the ignition key turn trick and got code p0836. Transfer case switch. If the torque converter is going out shouldn’t it have thrown some type of code for that? And maybe the transfer case code can be causing this?
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