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Old 05-31-2013, 02:01 PM   #1
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Auto trans still rolls even when in Park

Hi, I have a 2003 TJ with the 4.0 Auto trans and when I put it in park it will still roll. The shifter shows it is in park. I looked through the forums and didn't see this issue discussed.
Thanks for the help

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Old 05-31-2013, 02:16 PM   #2
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your parking pawl has been sheared (usually caused by someone putting it in park while still moving), or more likely, the linkage needs to be adjusted because it isn't quite going all the way into park on the tranny end.

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Old 05-31-2013, 02:48 PM   #3
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How do you check the "parking pawl" I have not ever had to do that. I looked at the linkage and it didn't appear to have moved at all.
Thanks
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Old 05-31-2013, 04:04 PM   #4
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I get what you are saying and yes it should technically not move. You are however supposed to keep it from rolling with the hand/parking brake with the trans in Neutral before shifting it into Park.
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Old 05-31-2013, 04:22 PM   #5
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Originally Posted by Rolf View Post
I get what you are saying and yes it should technically not move. You are however supposed to keep it from rolling with the hand/parking brake with the trans in Neutral before shifting it into Park.
Most auto manufacturers will say the opposite about any vehicle with 4 wheel disc brakes, and that putting it in gear (manual) or park (auto) is the "proper" way to keep it from moving. Modern parking brakes are very small drums that won't really hold up to much.

Vehicles with rear drums have a much better parking brake, but if it rolls freely in park, there's definitely an issue

I'd disconnect the linkage from the trans, shove it as far into park as it will go at the transmission, and see if it rolls. That would be the only practical way to determine if its an internal issue. You can't check the pawl without dismantling the trans, but the odds of it being internal are lot lower than it being linkage. The difference between "almost in park" and "in park" at the linkage is close enough that it wouldn't be obvious by looking at it. (Its a few mm difference)
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Old 05-31-2013, 06:04 PM   #6
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Quote:
Originally Posted by aelwero View Post

Most auto manufacturers will say the opposite about any vehicle with 4 wheel disc brakes, and that putting it in gear (manual) or park (auto) is the "proper" way to keep it from moving. Modern parking brakes are very small drums that won't really hold up to much.
He means to apply the parking brake before you put it in park while on an incline to keep all of that pressure off of the parking pawl.
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Old 05-31-2013, 06:23 PM   #7
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Quote:
Originally Posted by aelwero View Post
I'd disconnect the linkage from the trans, shove it as far into park as it will go at the transmission, and see if it rolls. That would be the only practical way to determine if its an internal issue. You can't check the pawl without dismantling the trans, but the odds of it being internal are lot lower than it being linkage. The difference between "almost in park" and "in park" at the linkage is close enough that it wouldn't be obvious by looking at it. (Its a few mm difference)
I agree with this. Check the linkage first.
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Old 05-31-2013, 06:42 PM   #8
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Originally Posted by OhSixTJ View Post
He means to apply the parking brake before you put it in park while on an incline to keep all of that pressure off of the parking pawl.
99.9% of the populous does not do this, and does not know any better. The auto manufacturers know that people don't use the e-brake and makes sure the parking pawl can take some abuse. I'll admit when I drive my parents cars that are auto I never use the parking brake, but on my Jeep (manual) I use the e-brake and keep it in gear, even though with my gearing the engine can hold the Jeep even of a very steep hill.

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