I have a 95 grand Cherokee ZJ and when I have my foot on the gas pedal there is a humming noise from the rear end. All fluids in the vehicle have been checked. It doesn't seem to affect the performance of it, it's just annoying. It seems the faster i go the louder it is, but again its only when my foot is on the accelerator. Anyone else experienced this? Anyone know what it could be?

Thanks for any help

 

sounds like when my rear bearings went out in my xj. Have you looked at your bearings on your carrier? I would look at those. That is what I thinking though.

 

check the u-joints.

 

thanks. i talked to a guy at work today (i work at a sears in the garage but im still pretty new to mechanical work). he suggested to check my fuel intake manifolds.

thanks for the advice guys. anything else anyone can think of?

 

Fuel Intake manifolds? i hope he is not going to charge for checking that?

 

he didnt check them. we just kinda had a casual conversation about it. he mentioned i might want to look into that as a possibility.

 

I would try what the others have said, Rear Wheel Bearing(s) or Differential Carrier Bearing(s) or a Rear U-joint are all valid places to seriously look at. The Fuel Intake Manifold is located on the engine, in the front of the Jeep. Thats like going to the Dr for constipation and the Doc starts by looking in your ears! Doesnt make sense right? I seriously doubt that its the intake manifold. Maybe he said Fuel Pump? but even then, it would be a constant whurring sound.

My money is on what 00jeepXJ said

 

rear end noise= intake problem? Am I missing something???

 

x2... can some one post a picture of the fuel intake manifolds so that I know what they look like.

 

I think they're right next to the flux capacitor or muffler bearings... lol

Does it sound kind of like a "whirring" noise that increases with speed?

 

yeah it sounds just like that and then when i hit 88 mph i always end up in weird places. any advice on how to fix the date modification on my flux capacitor?

 

haha anyways thanks to everyone who offered advice. ill check those things out.

 

fFuel intake manifolds is that anything like the board strecher we always used to have the new kid in class ask for... LOL

seriously thou if it gets louder with speed and gets quiter or disappears when you let off the gas it is most likely in the rear end bearing or gears.. mine has been doing that for the last few months, have new rear end in garage to replace when it finally goes out..