Service 4wd

[@WhiteBronze392]

The factory transfer case is soooo hit and miss. Folks running 38’s and beating them to death with zero issues. Folks street driving on factory tires with failures. The overall good thing is there are 1000’s out there and a small percentage of failures. But still…..it should be almost bulletproof and it’s not. I still think it’s a QC issue and not a design issue or the failures would be massive.

So they don’t like to be street driven on factory tires

 

[ParadigmDawg]

Not sure what happened today with mine. Going up a really rocky trail, rear lockers on and big pop that sounded like CV/Axle. Got out and everything looked fine but 4 or 5 more pops on the way out. Sounded like it was coming from TC. Once up, I turned locker off and no more sounds but rear locker blinking. I drove 50 miles home without issues but locker still blinking. I didn't evaluate when I got home but I will look at it tomorrow.

I was thinking maybe the locker sensor since obviously the locker isn't really on but that doesn't explain the loud popping.

Any thoughts or ideas of what all to look at tomorrow?

 

[Dubai_Bulldog392]

Just did an easy run half way through a 3 hour run ,service 4wd light comes on. Get home turn into driveway rear end is binding up. Our streets were just resurfaced and the rear tires twisted up the road surface rear differential is warm to the touch but not overly hot . Just turned 9000 miles. Seems like rear end not t case issue. It’s Friday 3 day weekend nothing is going to happen till next week.

Check the rear sensor on the Diff / Axel...had this issue many times...merely needs to be cleaned out. simply fix and if damaged, cheap replacement part but it sounds like the rear sensor.

 

[ParadigmDawg]

Check the rear sensor on the Diff / Axel...had this issue many times...merely needs to be cleaned out. simply fix and if damaged, cheap replacement part but it sounds like the rear sensor.

Even with the mechanical popping?

 

[guruman]

Dude. the popping noise is not good. Best case, is that something like the sensor broke loose in here and got chewed up by the gears without damaging them.

But, it's much more likely that something important got munched (probably ring to pinion gear teeth), and that took out the sensor. If you can pull the cover off, you should know right away. Either way, it's fixable. Good luck.

 

[Earl 392]

Not sure what happened today with mine. Going up a really rocky trail, rear lockers on and big pop that sounded like CV/Axle. Got out and everything looked fine but 4 or 5 more pops on the way out. Sounded like it was coming from TC. Once up, I turned locker off and no more sounds but rear locker blinking. I drove 50 miles home without issues but locker still blinking. I didn't evaluate when I got home but I will look at it tomorrow.

I was thinking maybe the locker sensor since obviously the locker isn't really on but that doesn't explain the loud popping.

Any thoughts or ideas of what all to look at tomorrow?View attachment 37241View attachment 37242View attachment 37243

Give us an update please . Also is that a synergy clamp on your tie rod ? Thanks

 

[ParadigmDawg]

Give us an update please . Also is that a synergy clamp on your tie rod ? Thanks

I ended up dropping it off at the dealer vs the Jeep shop. Once I tested it this morning, it is definitely in the rear diff and not the TC. No codes whatsoever.

Figured I may as well try to get the warranty to cover it.

That's the Teraflex clamp.

 

[Earl 392]

I ended up dropping it off at the dealer vs the Jeep shop. Once I tested it this morning, it is definitely in the rear diff and not the TC. No codes whatsoever.

Figured I may as well try to get the warranty to cover it.

That's the Teraflex clamp.

Thanks. Is that a stock tie rod?

 

[ParadigmDawg]

Thanks. Is that a stock tie rod?

Steersmarts

 

[Earl 392]

Steersmarts

Thank-you

 

[ParadigmDawg]

The sound in this video is 100% the sound mine is making so I guess it's the side gear. Weird thing is that I can turn on the lockers in 4A right now.

 

[ParadigmDawg]

The sound in this video is 100% the sound mine is making so I guess it's the side gear. Weird thing is that I can turn on the lockers in 4A right now.

Got a call from the dealership and they said that they believe it's just the sensor and it will be ready tomorrow.

I told them they sure better turn the locker on and ho drive it after they install the sensor kit because I will be shocked if that's the only thing wrong.

I will be out of town until Monday so we will see what happens.

 

[ParadigmDawg]

Got a call from the dealership and they said that they believe it's just the sensor and it will be ready tomorrow.

I told them they sure better turn the locker on and ho drive it after they install the sensor kit because I will be shocked if that's the only thing wrong.

I will be out of town until Monday so we will see what happens.

They called back and said the sensor didn't fix the blinking light but they added some friction modifier and the knocking is gone and they ordered some rebuild kit that should fix it. When I asked what that kit consisted of he said " probably carrier bearings and something for the clutch since its a limited slip diff. "

I spent a little time explaining how he was incorrect on most of what he was saying and he stated that's what the tech told him.

I decided to quit wasting my breath and told him to call me after that plan didn't work and I would deal with it when I get back in town.

 

[JESSE'S 392]

Just went back out to garage fired up the Jeep no service 4wd light on ,so backed out in to the street no binding smooth as ever put the rear lockers on turned them off.. funny story when we got home had an email from Jeep saying make an appointment for tpms low pressure but nothing about service 4wd . They picked up my aired down tires at 17 lbs. so obviously Jeep remotely fixed service 4wd issue

I've had it too, pulled in to get gas and check it at the same time, turned it off, fueled up, turned it back on and the issue went away by itself. I made an appointment at the dealer and they couldn't find anything wrong with it.

 

[Earl 392]

They called back and said the sensor didn't fix the blinking light but they added some friction modifier and the knocking is gone and they ordered some rebuild kit that should fix it. When I asked what that kit consisted of he said " probably carrier bearings and something for the clutch since its a limited slip diff. "

I spent a little time explaining how he was incorrect on most of what he was saying and he stated that's what the tech told him.

I decided to quit wasting my breath and told him to call me after that plan didn't work and I would deal with it when I get back in town.

? We don’t have limited slip differential in our 392s what ever are they talking about?

 

[ParadigmDawg]

? We don’t have limited slip differential in our 392s what ever are they talking about?

Correct and nothing else he said made sense. Hopefully the mechanic knows what he is doing and the SA just isn't relaying the correct message.

 

[drummr25]

Count me on the list.

Just dropped my wife off at the airport (10min drive through stop & go traffic), and pulling away the Service 4WD light comes on...it has never happened before. I drive another 10min (30-40mph) to hit the golf range and pull into a parking spot. Obvious binding happening, can't tell if it's front or rear or both. Shut the Jeep off & come back 45min later to head home and the light is off & it's perfect when I fire it up. I get home (<15min drive) and engage 4WD for the hell of it and it goes shifts in & out we zero issues.

This is my daily & I don't drive a ton..but I need it. Guess I should book a trip to the dealer now?? 2022, 14K mi, and only used off-road once for a weekend almost 2yrs ago when it had 1,200mi on it...it's been perfect till now.

 

[Earl 392]

Count me on the list.

Just dropped my wife off at the airport (10min drive through stop & go traffic), and pulling away the Service 4WD light comes on...it has never happened before. I drive another 10min (30-40mph) to hit the golf range and pull into a parking spot. Obvious binding happening, can't tell if it's front or rear or both. Shut the Jeep off & come back 45min later to head home and the light is off & it's perfect when I fire it up. I get home (<15min drive) and engage 4WD for the hell of it and it goes shifts in & out we zero issues.

This is my daily & I don't drive a ton..but I need it. Guess I should book a trip to the dealer now?? 2022, 14K mi, and only used off-road once for a weekend almost 2yrs ago when it had 1,200mi on it...it's been perfect till now.

Not to be a Debbie downer but I bet they don’t find anything wrong and no codes

 

[drummr25]

Not to be a Debbie downer but I bet they don’t find anything wrong and no codes

So just an update...I brought the Jeep in to get the oil changed & tire rotation (might as well- it's free & pouring rain outside...) and had them do the diagnostic on the transfer case after telling them what happened. Surprisingly, there was a code present and they eventually ended up performing some sort of software update- so we'll see what happens. I was told that the Jeep would need to be exhibiting some of active issue (stuck in 4WD, lights flashing or won't go off, ect) before they can do down the road of a claim situation involving the TC. Makes sense I guess, so we'll wait & see...

 

[onfire392]

So just an update...I brought the Jeep in to get the oil changed & tire rotation (might as well- it's free & pouring rain outside...) and had them do the diagnostic on the transfer case after telling them what happened. Surprisingly, there was a code present and they eventually ended up performing some sort of software update- so we'll see what happens. I was told that the Jeep would need to be exhibiting some of active issue (stuck in 4WD, lights flashing or won't go off, ect) before they can do down the road of a claim situation involving the TC. Makes sense I guess, so we'll wait & see...

I hope the software update increases the clamping force on the clutch disks. The TC has a very high maximum clamping for range. Jeep needs to use all of it when locked.