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Go Back JeepForum.com > Models > Jeep Wrangler Forums > JK Wrangler Technical Forum > Auto Trans will not leave PARK (Until it feeeeels like it!)

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Unread 09-16-2014, 07:11 PM   #1
Unlimited_Fun
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2009 JK Wrangler 
 
Join Date: Jan 2014
Location: Bellevue, WA
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Auto Trans will not leave PARK (Until it feeeeels like it!)

Increasingly I can;t move the shifter out of reverse.

When I finally CAN, then I can switch to other gears just fine.

Put it back in Park, maybe I can, maybe I can't. There seems to be no rhyme or reason for the ability to change gears.

After trying, prying, swearing, eventually it just suddenly slides in to reverse as if nothing had ever happened.

Once I get it to reverse or drive, I can hear a slight actuator sound.

I thought there might be a problem with a switch behind the brake pedal, but guess what . . . I can change to reverse without depressing the brake at all.

I've read a few forums and threads about plastic shafts in the handle etc, folks using zip ties or chopsticks.

I'll crawl underneath and have a look, but in the mean time, anyone have any other ideas?

The transmission fluid was just at the safe line so I added 1\2 quart, it's clean looking.

Also this transmission was put in last fall with an alleged 3yr 36k warranty.

Thanks for your suggestions!

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Unread 09-16-2014, 07:36 PM   #2
Jiblet
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There is a shift lock override that may help. But I'd be investigating that warranty....



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Unread 09-18-2014, 02:38 PM   #3
zjilla
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Is that it? Mine does it too. I just physically rock the jeep and it unlocks

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Unread 09-19-2014, 11:01 AM   #4
jwmbishop
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Quote:
Originally Posted by Unlimited_Fun View Post
Increasingly I can;t move the shifter out of reverse.

When I finally CAN, then I can switch to other gears just fine.

Put it back in Park, maybe I can, maybe I can't. There seems to be no rhyme or reason for the ability to change gears.

After trying, prying, swearing, eventually it just suddenly slides in to reverse as if nothing had ever happened.

Once I get it to reverse or drive, I can hear a slight actuator sound.

I thought there might be a problem with a switch behind the brake pedal, but guess what . . . I can change to reverse without depressing the brake at all.

!
The brake lockout only locks PARK. Once you are out of park you SHOULD be able to shift to rev from N or D without applying the brakes. If you are saying you can shift into reverse (but no further) from park without pressing the pedal - that system (and or parts of it like the actual locking mechanism in the console) or a serious maladjustment of the linkage is your problem.
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Unread 09-20-2014, 09:54 AM   #5
Unlimited_Fun
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Thx, I'm not saying that.
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Unread 09-20-2014, 10:31 AM   #6
jwmbishop
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Good - sounds like the shifter is just way out of adjustment - like a broken bushing or something... make sure nothing has fallen in there like a dime etc...
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Unread 09-20-2014, 04:35 PM   #7
Unlimited_Fun
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I took off the console and inspected the assembly.

The thumb button does pull back a tiny cable that goes to god-knows-where.

When I can't pull in to reverse, it isn't at all obvious what prevents it.

I fiddled with the switch at the brake pedal. There's a plunger on a momentary switch that meets the pedal and it got stuck too much "IN". The brake lights then stayed on. I had to extend it out by pulling forcefully in order for the brake lights to go off again. It seems like the plunger is adjustable on some serrated edge like a wire tie is.

All of the harnesses seem well seated both in the console and at the transmission.

Also, when I put it in reverse or drive, I hear a bit of gear grind that lasts about a second.

I take it that's not normal? I don't recall hearing it before.



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Unread 09-20-2014, 04:48 PM   #8
Neo1130
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Huh, I wasn't even aware there was a lockout?! I can start my Jeep without pressing the brake pedal and shift it from park or ANY other gear without pressing the brake? I guess I've got the opposite problem you've got?!
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Unread 09-22-2014, 12:28 AM   #9
Unlimited_Fun
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I threw on some warm-ups early this morning and went to the only place I knew that sold contact cleaner spray in a can.

After inserting the sprayer in the shift-interlock plastic dooma-hicky, I depressed the brake many times whilst spraying to clear whatever funk was keeping it from extended out.

This helped but it still stuck again once so I sprayed in to that same area with some silicone type spray and actuated the plastic piece over a hundred time.

I hear the distinct click from movement when the solenoid engages and in subsequent tests there's no further sticking.

Then I reassembled the console and knobs and shift lever etc and called it good.

I find that instead of needing to insert a key in to the "stick key here to save your arse" slot, I can just push down a lot on that area of the console and the emergency relief moves the interlock dooma-hicky.

A "feature" presented with fiddling with the console to many times.
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