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Old 06-21-2013, 10:32 PM   #1
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sye question

Last weekend I put in an SYE.

when I have the rear shaft removed and take it out of park I have no noise, when I shift back into park I get a terrible grinding noise that goes away after a few seconds.

When I have the driveshaft in, I can shift through gears without issue/no noise.

Does anyone know why?

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Old 06-21-2013, 10:42 PM   #2
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Interesting.... Perhaps the force on the internals with the shaft bolted up is keeping the chain tight. And when you have the shaft off it isn't under any type of force or load and the chain can slack up?

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Old 06-21-2013, 10:49 PM   #3
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That's actually exactly what I was thinking.

After I installed the sye i put the jeep in 4x4 to move it out of the garage to work on it, freaked out a little when I heard the grinding, so I tried shifting gears again when in 2hi, same noise. Put the DS in and no problems. I figured the DS holding the yoke in place solved it.
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Old 06-21-2013, 11:04 PM   #4
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The reason for the noise is because with the driveshaft out, there is nothing hiding the transmission still while in drive. The noise is the park pawl trying to lock in to keep the trans still with the driveshaft in it doesn't let the trans move. It's essentially like your shifting into park while still moving.
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Old 06-21-2013, 11:12 PM   #5
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Quote:
Originally Posted by Ghost_rader View Post
The reason for the noise is because with the driveshaft out, there is nothing hiding the transmission still while in drive. The noise is the park pawl trying to lock in to keep the trans still with the driveshaft in it doesn't let the trans move. It's essentially like your shifting into park while still moving.
And that's exactly what it sounds like too
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Old 06-22-2013, 01:22 AM   #6
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parking pawl was the first thing that popped into my mind as well, but I've never had one keep spinning like that. However I'm not saying it isn't possible. Makes sense to me though, knowing how an auto trans is set up inside.
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Old 06-22-2013, 02:00 AM   #7
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Quote:
Originally Posted by Ghost_rader View Post
The reason for the noise is because with the driveshaft out, there is nothing hiding the transmission still while in drive. The noise is the park pawl trying to lock in to keep the trans still with the driveshaft in it doesn't let the trans move. It's essentially like your shifting into park while still moving.

^ I was going to say this, thanks!

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