Rolling forward while under the Jeep! - JeepForum.com
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post #1 of 11 Old 06-05-2020, 04:22 PM Thread Starter
Villegas23
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Wj Rolling forward while under the Jeep!

So today i finally decided to install a DC front driveshaft and I rocked the Jeep back on forth (idk) and that bad boy actually rolled forward (as if it were in N) and i had to throw my foot in front of the rear tire to make it stop....

Why in the world would this happen???

Now im wondering is it gonna roll into the flowerbox while im asleep?

Thanks

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post #2 of 11 Old 06-05-2020, 04:42 PM
Klarah523
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Have the parking brake on? I wouldn't rely on the parking pawl on a very used automatic if I was under it, though it's typically older chevy trucks that eat the pawl.

Also -- wheel chocks can be your friend.

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post #3 of 11 Old 06-05-2020, 04:59 PM
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Wheel Chocks!

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post #4 of 11 Old 06-05-2020, 05:45 PM Thread Starter
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Quote:
Originally Posted by Klarah523 View Post
Have the parking brake on? I wouldn't rely on the parking pawl on a very used automatic if I was under it, though it's typically older chevy trucks that eat the pawl.

Also -- wheel chocks can be your friend. [IMG class=inlineimg]/forum/images/JeepForum_2016/smilies/tango_face_grin.png[/IMG]
Well I didn't expect that to happen ha. But is it normal for that to happen when rocking the Jeep? Any ideas on what I can do to test the pawl?
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post #5 of 11 Old 06-05-2020, 06:25 PM
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Quote:
Originally Posted by Villegas23 View Post
Well I didn't expect that to happen ha. But is it normal for that to happen when rocking the Jeep? Any ideas on what I can do to test the pawl?

T/C not in neutral, Transmission in park, it should only roll far enough for the parking mechanism to click in.

If it rolls, it may not be the pawl itself, but could be just the linkage out of adjustment. Or various other things.

IMHO, I've never really relied on any automatic to stay put like I would a manual (I've driven much heavier, much older clunkers).

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post #6 of 11 Old 06-06-2020, 04:02 AM
Darnice
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Or simply, move the flower box.
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post #7 of 11 Old 06-06-2020, 08:26 AM
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Do you have the 247 full time transfercase in your Jeep? It is well known that these Jeeps roll without the front driveline installed with a 247. Google it and you will find many stories about this. It has nothing to do with the trans pawl, just that the transfer case slips(progressive coupler) without pressure from both drivelines.



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post #8 of 11 Old 06-06-2020, 11:24 AM Thread Starter
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Originally Posted by Bigrigr View Post
Do you have the 247 full time transfercase in your Jeep? It is well known that these Jeeps roll without the front driveline installed with a 247. Google it and you will find many stories about this. It has nothing to do with the trans pawl, just that the transfer case slips(progressive coupler) without pressure from both drivelines.



WHEEL CHOCKS!

242 I'm pretty sure. I'm not out there every day rocking it back and forth but since this never happened before it was new to me. But it's nice to know that it has nothing to do with the pawl. Thank you. I was always wondering why sometimes I give it a lot of gas it "sputters" for about 3 secs and then the sputter stops. Unless that's a different issue?
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post #9 of 11 Old 06-06-2020, 11:30 AM
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Originally Posted by Villegas23 View Post
242 I'm pretty sure. I'm not out there every day rocking it back and forth but since this never happened before it was new to me. But it's nice to know that it has nothing to do with the pawl. Thank you. I was always wondering why sometimes I give it a lot of gas it "sputters" for about 3 secs and then the sputter stops. Unless that's a different issue?

If it is the 242(true 2wd position up top) then i dont think it will roll away, unless you have it in the 4wd full time position. Then it could roll....
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post #10 of 11 Old 06-07-2020, 05:07 AM
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And this is why I'm here - mostly to learn and to occasionally throw in my $0.02, I forgot about some of the jeep T/C being more like AWD than 4WD.

Might want to take a look at the parking brake if that wasn't holding it.



The sputtering is probably a side issue, first thing is to get codes. That can have various causes: wiring, clogged injectors, bad coil pack, failing plugs, various sensors, etc.
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post #11 of 11 Old 06-07-2020, 04:18 PM
Bigrigr
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Sputtering would be an entirely different issue. Start a new post for best results.

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