I have been fighting my car for the past year with one thing after another.....the previous owner had the t-case rebuild with mitsu lsd by someone on the forum but I am fearing it is once again on its way out.....the t-case has whined upon decel ever since I have owned the car but the past few months I have noticed an almost grinding noise upon decel.....once I let off of the gas in any gear I can hear a grinding like something is wearing in the drivetrain....I have a triple plate clutch that is seemingly getting weaker and weaker and my trans has also had some minor issues since I owned the car.....syncro grind in 5th and it has been getting pretty notchy....the grinding noise is definately not normal as it only started withing the last few months.....also when I turn the key to shut the car off there is a clunking noise which sounds like possible transmission noise......the fluids have all been changed on a regular basis....last transmission fuild was royal purple and I intend on changing the trans and the t-case fluid to see what comes out.....I know noone can diagnose this really but I am looking for some insight or possible similiar experience....

 

I want some feed back on this too. I have the exact same problem on my evo but the grinding noise is not as bad as yours. Hope it isnt as bad as it sounds.... GL

 

do you have after market motor mounts? If you do they will make everything sound way louder and worse than it actually is. Also are you sure your not hearing clutch chatter. Aftermarket clutches especally thouse with mulitple plates always chatter when you let off the gas.

 

I do have solid motor mounts and other circumstances that make everything louder but this noise is something that has gotten worse....I have always had chatter from the clutch when the clutch peddle is engaged.....but not while driving when I let off of the gas...I am very use to all the normal chattering and chirping from the triple plate.....the clutch is probably getting towards the end of its life it has close to 20,000 on it....

 

dont u live near sheptrans? or buschur? id take it there before it gets worse =\
i mean what do u have to lose right?

 

I have the same noise during deceleration, started just over two weeks ago. Found it was the tranny when I changed the fluid to make sure everything was good. It wasn't. Two good size pieces of metal were on the magnetic drain plug. New Shep trans should fix my problem soon enough.

 

i had the same problem on mine, mine was whinning real bad during drivetrain stress acceleration or deceleration... all depends on stress .... until one day just cruising chipped like 4-5 teeth... for i could count that came out of drain plug of TC.

 

I guess I will find out when I change the fluids.....im really hoping its not the tcase....