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I had chatter noise in transfer case. replaced bearings, seals, chain and pump. now it chatters louder and more. I even used the mopar fluid that is oem for it. What more could it be? It is a 247J transfer case out of 2000 grand cherokee

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When you dis assembled the tcase, you removed the oil pump, and then the progressive coupler, which is basically a kinda clutch pack, these are usually what go bad in these they can be replaced without pulling the tcase

Posted on Oct 14, 2010


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Loud chatter on start and rattle from timing chain area

The timing chain area also takes in the alternator and water pump. To isolate the source of the noise, use the old mechanics trick.

Place a 3 foot 1/4 inch brass rod against the flap at the opening of your ear and push until it closes. Place the other end of the rod against various engine components and listen. The noisy problem will conduct the noise up the rod to your ear and you can hear quite precisely where the problem is. Much safer than laying your ear all over a running engine.

You can also loosen the fan belt and run the engine without alternator or water pump (briefly) to see how that affects the problem. Chatter on start makes me think of starter and Bendix gear problems. Sounds like a 2 person diagnostic team to me; one to start the car and one to listen and probe.

Don't know if Subaru Forrester has an engine that has valve interference at piston Top Dead Center. If it is and the timing chain breaks, you are looking at major $$ to recover.

Nov 06, 2012 | 2004 Subaru Forester

2 Answers

1995 Jeep Grand Cherokee at parking lot speed I have a chatter coming from the diff. when I let off the accelerator, I have replaced the fluid with Royal Purple which says I DON'T have a modifier.

Sounds like you could possibly have a pinion bearing issue. Have you had the pinion seal replaced recently? if so, sometimes the nut that holds the yoke on the rear differential gets over-tightned causing the pinion bearing to be too tight in the race, therefor damaging the bearing assembly and causes a "chattering" sound. When a pinion bearing goes bad in these Jeeps that is the noise they will make, even at lower speeds. Hope this helps..

Oct 22, 2012 | 1995 Jeep Grand Cherokee

1 Answer

Niose when clutch is engadged

That would be the clutch release bearing (also called the throwout bearing).
The bearing is a sealed unit that eventually wears out and needs replacing.
Unfortunately, the only fix is to pull the transmission and replace the bearing.
And while you're at it, you might as well put in a new clutch and pressure plate while it's apart. Or not, depending on your budget. The release bearing runs in the neighborhood of around $40. If you can stand the noise, the bearing may last for quite a while, but eventually it may sieze and leave you stranded.
Good luck.

Nov 25, 2011 | 1998 Ford Escort

1 Answer

I have a 2005 Kia Spectra ex. Had mechanic look at it twice. Had battery alternator and starter tested. All good. Check engine light is not on. Just had tune up trasmission fluid exchange done. The power...

The ringing noise could be from a bad alternator, a loose bolt, a loose pulley or gear or possibly a low fluid level in the power steering pump. Try listening for the noise when the engine is idling, then as you rev the motor from 1000 to 1800rpm and also while you are driving on the street and the highway. While the car is in park and running, crank the steering wheel right and/or left until it stops and hold it there to listen for noises from the power steering. The electronic gurgling noise and chattering noises could be failing bearings in one of the pulleys (tensioner, idler,etc. and/or possibly a water pump bearing. Here is a tip for diagnosis- Find 3/8 drive extension that is at least 12" to 18" long. Open the hood and start the car. Take one end of the extension and place it on the alternator body away from any electrical connections, pulleys, belts, etc. and put your ear against the other end and listen for chattering, ringing or any other odd noise. Then do the same to the p/s pump, a/c compressor, etc. BE SURE YOU SAFELY APPLY THIS TECHNIC AND IF YOU DON'T FEEL COMFORTABLE, TAKE IT TO A PROFESSIONAL. SAFETY FIRST.

May 10, 2010 | 2005 Kia Spectra

1 Answer

Audi a4 2ltr tdi 140. engine has a chatter only when hot . removed aux belt but noise still there. sounds like a pulley chatter. vehicle drives and performs a1.

Just a guess.. could be bearings of (external) belt castors squeaking when hot (= dry). What is the mileage? May need to replace a pulley or so...

I had something like this once with the water pump of my 2,5 TDi and I replaced the pump preventively ($120 I think), problem was solved.

Sep 18, 2009 | 2005 Audi A4

1 Answer

There is this sound like a valve tappet or chain noise on my 98

they have a problem with the oil pressure relief valve chattering from cold for a few minutes, a simple fix to change for a new modified item with shamfered edges on valve to eliminate noise

Jul 15, 2009 | 1999 Porsche Boxster

1 Answer

T-case 1991 chevy k 1500

I think you have a worn WHEEL BEARING.
Place your truck on LEVEL SOLID ground.
SCOTCH the rear tires, IF you are on dirt put a section of a 2"x10" board under your jack, jack up the right front and secure it with a jack stand. Grasp the TOP of the tire with one hand and the BOTTOM of the tire with the other. Using some effort , rack the wheel/tire back and forth. You are looking for 'PLAY' in the wheel bearing and there should be NONE. If there is, the WHEEL BEARING is WORN and should be replaced. Do the same thing with the left front to determine if there is 'play' there as well.
A worn wheel bearing will not always make a noise all the time. The noise is most often intermittent and can sound like a 'grating', 'grinding' or 'chattering' noise from the front end.
The $$ cost can range from under $200 up to about $400 including labor and tax, depending on the quality of the bearing assembly you decide to install. If you go 'cheap' be ready to do a 'repeat' in about a year or so :(
Good luck. :)

Apr 24, 2009 | 1991 Chevrolet K1500

1 Answer

1999 Suburban K2500- Transfer Case Shot

Very unlikley,these trans cases use auto trans fluid and are prone to leak easily

Jan 14, 2009 | 1999 GMC Suburban

2 Answers

Engine knock noise on cold startup

these 3.3l engines are equipped with timing chains. if vehicle has prolonged down time, typically more than 4 hours, vehicle makes a chatter until the timing chain tensioners put tension on the chain. you will need them replaced.

Nov 29, 2008 | 2006 Hyundai Sonata

1 Answer

2002 bravada

that noise could be a lot of things. a bad wheel bearing, a bad u-joint makes many different noises. bad bearings in the rear-end itself. the backing plates directly behind the wheels could be rotting out and crumbling. that is all wheel drive and takes a special fluid in the transfer case. if the correct fluid isn't used it will chatter bad. the special fluid is available from g.m. only and is called "autotrac-fluid".
you may need to have to have it professionally diagnosed to save from replacing a lot of parts that aren't going to fix it. Good Luck..........Scott

Aug 12, 2008 | 2000 Oldsmobile Bravada

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