Mechanics

JEEP GRAND CHEROKEE NOISE PROBLEM

2005 Jeep Grand Cherokee • 70,000 miles

High pitch noise when vehicle is accerating or sustaining speeds above 50 mph. Noise disappears when decelerating
AD
Avatar
David.adlard
December 15, 2012.




Does it sound like it is a belt?
AD

Check belt tension and inspect engine for intake vac leaks.

Tiny
Fixitmr
Dec 15, 2012.
Could be a pinion bearing. Is this Jeep a 4X4?

Freemba
Dec 15, 2012.
Gear noise could be the problem. How loud is it. Does it only do it in high/final gear? Is it manual trans? They tend to be noisy.

Tiny
Fixitmr
Dec 15, 2012.
It ix 4x4. I was guessing pinion bear. Just trying to confirm. Sorry I should have been more specific about noise. Noise is coming from rear of vehicle. Am not sure if it is drive line, differential, or rear bearings.

Tiny
David.adlard
Dec 15, 2012.
Did it just start? Or has it got worse? I've seen people drive noisy gears for years. Your may be what's called a rear end howl, of course at that volume, the misaligment/wear is severe. Usually a model of vehicle is famous for certain noises and bad parts resulting.

Tiny
Fixitmr
Dec 16, 2012.
The noise started at 25,000 mile and has gotten prgressively worse. We took the vehilce to the deal back then but they said there was nothing wrong. Now the pitch is so high that it hurt the ears. I dont think that it would have been cover by warrantee because the defect can be tied to uneven tire ware.

Tiny
David.adlard
Dec 19, 2012.
With park brake engaged and transmission in park (if automatic) or any gear if manual; try turning the drive shaft by hand to check for play in the pinion bearing. If there is a fair amount of play then suspect the bearing and race needs to be replaced.

Freemba
Dec 19, 2012.

AD