Reallly bad Grinding!!!
 

I have a really bad grinding sound when i go like over 15 mph, idk what it is for sure, i was thinking transfer case but i'm kinda a noob so im just wandering what it could be and how to fix it

We'll need alot more info than that if you want help.Like tranny t/c what you do with jeep like off roading etc.

yeah sure, its an auto and an np231 and i recently got stuck in a mud hole when i was in 4-lo, when i got pulled out i coulndt keep my car engadged in any gear so i thought thats why it was grinding, so i fixed that and it stays in gears but it's still grinding

View My Video

Thats the sound its making, any ideas??

I have never heard that sound before? Is the linkage ok on the t/c, driveshafts arnt binding or anything?

idk how to check the linkage or adjust it, thats what my initial thought was but idk how to mess with it

Try the search function maybe you can get a picture of the linkage there will be something on it but it might take a bit of time to find I'll see what I can dig up to.

had to listen to the video more than once cuz it sounded like your exhaust at first.lol. i can tell you from what i heard when my transfer case went it sounded way different. the chain in mine was bouncing off the sides so it was a metal on metal sound. are you in 2wd or 4 wd when its making the noise?

Yeah I couldnt find pics, there's a linkage adjustment bolt somewhere but idk where lol

I was in 2wd but it does it in 4wd as well

Long shot have you checked all the fluids?

no but i guess i could, i dont feel like thats it though

Most likly isnt but got to start some were.You dont have to do it I only suggested it.

Fluids are all good

could it be my wheel bearings maybe, i mean i was trying to get unstuck from mud, could have messed them up somehow

anyone? any ideas or anything, really need help, this is my DD

I had a really bad hum/vibration at 30 and up to 60 and swaped out the u-joints and still had it. Got under it again to check my rear leaf spring and noticed my exhaust braket in the back was broke and the exhaust was vib/rubbing on the side of the hitch.

It only happens at fast acceleration in low speeds

Bump

is your jeep auto or manual? does it do it when you gradually accelerate or just on hard acceleration

It's and auto and it does it with hard acceleration

sounds to me like something is slipping then. if its only doing it under hard acceleration then that tells me when there is a load on it its slipping. maybe your tranny is bad. not sure

I would pull the front shaft and then drive around to see if it still makes noise.

what is that going to do if you dont mind me asking?

It makes more of a ratchet sound then a grinding

Any loss of power? I had a similar sound that after I got stuck on a rock and after I power thru it, it started to make that noise. The longer I drove the more it lost power. After tearing it apart three times and changed flex plates I took it to a transmission shop and the guy took it around the parking lot came back and handed me the keys and said "torque converter"! I think it cost me about $200.00 and I installed it. So you might take it to a shop and ask them to listen to it and get there opinion. If that is it make sure you change the fluid and filter, when I did it the fluid in the pan looked metallic. It took three fluid changes before it looked clean.
Hope this helps!

Yeah it feels kinda sluggish when I'm in first gear

You might give that a try and please let us know what they say and how its going. There are magnets in the bottem of the pan and mine had alot of metal shavings on it. Good luck.

You think they'd charge to just drive it around for 5 mins or so??

On the TC shift rod, put the case in 2HI and loosen the trunion nut that holds the rod in position. Then, put the shift handle in the 2WD position and tighten the trunion nut back down.Try that to check your adjustment.

I would call and ask if they would charge to listen to the noise and help you out. Most shops around here dont charge unless they hook it up to a diagnosis machine of some sort. But I would just tell them that your short on cash right now and that your trying to find out just what is making the noise first, then you can figure out what you can afford.

Yeah I looked for the adjustment nut but I have no clue where it is

AAMCO of Columbus (W Broad St), OH | (614) 274-1164
Monday - Friday.........8:00am - 6:00pm

just throwin it out here but pop ur valve cover and make sure everything out there is fine

afterm uch driving, i realize its coming from front passenger side when i accelerate hard from a stop or floor it

Ask a shop to take a short drive with it and see what they say. They won't charge you unless they say before they do it.

motor/tranny mounts???
 

Hey bro, I had a very similar situation in a vehicle I used to have, and I know it sounds remedial, but have you checked your tranny mount and motor mounts? The resenation of that sound, along with the fact that it only happens under great torque load of your engine leads me to believe you possibly ripped a mount somewhere and some drive-train component is actually making contact with your chassis or undercarriage... Just a thought. Good luck!
John

I was going to suggest this as well.

I had a similar experience with my YJ, & it turned out a rock had lodged itself between the tranny & skidplate/crossmember. (drove me nuts for a week) Take a close look at everything that could make a noise if it was bent & could be touching something it normally wouldn't, when the engine/ trans/T-case is torqued over the direction it would be under acceleration. This would be clockwise as viewed from the rear of the vehicle.

Hmm i may look around at that, another thing is that about a month ago a buddy and i took for a hell drive and kept on shifting my transfer case. The noise actually seemed to go away some, it happens about half as much as it did before we did that and the noise is no longer as bad when it does happen. So idk if that means anything either