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Unread 08-07-2012, 03:03 PM   #1
htcrkjak
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1998 ZJ 
 
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"Park" won't engage

When my '98 ZJ is in Park, it tends to move. Park doesn't fully engage. Any ideas?
Thanks

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Unread 08-07-2012, 03:05 PM   #2
sevenscrew
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is the gear shifter adjusted underneath on the driver side of the trans? dont know much about park not engaging fully tho
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Unread 08-07-2012, 03:09 PM   #3
FAlfani81
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Are you missing your front drive shaft?
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Unread 08-07-2012, 03:29 PM   #4
ajmorell
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Whether or not the front driveshaft is there wouldn't matter even if he had a 249. The 96+ don't roll w/out it like the 93-95 do. I'm wondering if the parking pawl is broken.
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Unread 08-07-2012, 03:31 PM   #5
FAlfani81
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Quote:
Originally Posted by ajmorell View Post
Whether or not the front driveshaft is there wouldn't matter even if he had a 249. The 96+ don't roll w/out it like the 93-95 do. I'm wondering if the parking pawl is broken.
Didn't know that! Good to know
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Unread 08-08-2012, 03:29 AM   #6
95cherokee318
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the VC will allow it to roll if its bad. and it probably is lol ive seen this happen not just on mine when it had the 249, but a friends that was a 98 zj and it was the VC.
my advise... do the 242 or the 231 swap, youll like either one more.
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Unread 08-08-2012, 04:12 AM   #7
coralman
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There is a tsb in the FAQ about the shifter detent also.
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Unread 08-09-2012, 07:31 PM   #8
htcrkjak
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Vc?

I am a bit ignorant. What is a VC.
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Unread 08-09-2012, 07:41 PM   #9
ajmorell
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viscous coupler, it's part of the 249 transfer case
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Unread 08-09-2012, 07:54 PM   #10
CatSplat
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Quote:
Originally Posted by 95cherokee318 View Post
the VC will allow it to roll if its bad. and it probably is lol ive seen this happen not just on mine when it had the 249, but a friends that was a 98 zj and it was the VC.
my advise... do the 242 or the 231 swap, youll like either one more.
I honestly don't see how that's possible. VCs fail in the "locked" mode and are essentially in 4PT. How would that allow the vehicle to roll with the parking pawl engaged?
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Unread 08-09-2012, 08:57 PM   #11
ratmonkey
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Quote:
Originally Posted by 95cherokee318 View Post
the VC will allow it to roll if its bad. and it probably is lol ive seen this happen not just on mine when it had the 249, but a friends that was a 98 zj and it was the VC.
my advise... do the 242 or the 231 swap, youll like either one more.
doesn't work like that at all actually
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Unread 08-09-2012, 08:58 PM   #12
FAlfani81
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Quote:
Originally Posted by CatSplat

I honestly don't see how that's possible. VCs fail in the "locked" mode and are essentially in 4PT. How would that allow the vehicle to roll with the parking pawl engaged?
When mine went bad it would only turn "4PT" when it was warmed up. You could literally hear it unbind as it cooled down with random *BUUNG* sounds. After I pulled the driveshaft it would stay put when parked until it cooled down.
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Unread 08-09-2012, 10:24 PM   #13
95cherokee318
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it will roll, it depends on what happens internally to the VC, you could actually turn mine by hand when i took it out, it was ridiculous....
even when the pawl is locked in, the power is distributed through the transfer case via the VC, and if the VC actually somehow had a hole in it that wouldnt allow the fluid to build pressure, your jeep wouldnt move at all, or very little.
I'm not trying to disprove anyone, these viscous couplings were a mistake made by new process gear. nice when their new, but worthless when they go, and they dont really last up to par for our jeeps, the symtoms of a failed VC vary, but are always doing the same things, im so glad i swapped my transfer case lol
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Unread 08-10-2012, 11:16 AM   #14
CatSplat
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Quote:
Originally Posted by FAlfani81 View Post
When mine went bad it would only turn "4PT" when it was warmed up. You could literally hear it unbind as it cooled down with random *BUUNG* sounds. After I pulled the driveshaft it would stay put when parked until it cooled down.
Precisely, having the removed front drive shaft was what caused it to roll, not the state of the VC. Any '93-'95 249 will roll in Park with the front DS removed.
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Unread 08-10-2012, 12:45 PM   #15
ratmonkey
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Quote:
Originally Posted by FAlfani81 View Post
When mine went bad it would only turn "4PT" when it was warmed up. You could literally hear it unbind as it cooled down with random *BUUNG* sounds. After I pulled the driveshaft it would stay put when parked until it cooled down.
93-95 will roll no matter if it's good or bad when you pull a shaft, axle or drive. 96+ that problem was corrected and it can't roll in park with the rear shaft in.
It only fails one way, bound up when heated.
The reason the early ones fail so regularly is because they are in use 100% of the time. The later ones, and the way Subaru and other manufacturers use them, last twice as long because they aren't putting all the driveline power through them.

The op does NOT have a case that will allow it to roll in park unless someone put an early one in to spite him.
Let's get back on topic.
Also, how fast if it rolling? Creeping, like it's in neutral? what?
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