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My Ford 2002 XLT Explorer is making the loudest whirring noise. It has been suggested it is the differential which is a huge job. Do you think that could be it. I have had the back and front ball bearings changed and that helped with a different kind of noise.

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Hi! Yes it can be the differential but before doing that, please have the gear oil checked first. The gear oil may just be burnt resulting to poor performance to the differential. Please write back and tell me how it goes after the checking. Have a good one!

Posted on Jul 27, 2010

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Hello my question is I have a 2002 ford explorer Im hearing a loud constant noise when accelerating and breaking just wondering if its my differential and do i have to replace it if its having problem


Noise usually indicates worn part. Lubricating it can help, but it won't solve the problem. Once a bearing starts to wear, it develops a flat spot on the bearing. If the wear is significant, rotating the tires individually off the ground will sometimes be enough to indicate if it's the wheel bearing ( you can hear/feel it at only one tire ) or a differential bearing ( you can hear/feel it on both sides of the same axel )

A bearing in the transmission or the transfer case will sound central to the vehicle...much easier to identify if a passenger in the vehicle can try to pinpoint the sound while the vehicle is being driven by someone else.

Sep 25, 2014 | 2002 Ford Explorer

1 Answer

Rattleting noise seems to be the crankcase rear chain V6.Cyl 4.0 ford exp XLT 2002


Make sure the oil level is good. The hydraulic tensioners for the chain work with the engine's oil. If low it will make a rattling/knocking like noise.

Apr 16, 2014 | 2002 Ford Explorer

1 Answer

Loud Humming/Wheel Bearings?


When you turn and hear a noise it is usually a CV Joint that is going bad. Humming can be a lot of things. Tires wheel bearings, rear end differential etc.

May 05, 2017 | 2002 Ford Explorer

1 Answer

I have a 2004 ford explorer xlt 4x4 4.0l engine. It seems that that the 2 axles for the rear end are leaking on to the rear differential. I was wondering if that means that the rear pinion seal has to be...


the pinion seal only needs to be done if its leaking, or you think you should while its there getting the other seals, not a bad idea. its a job, so make sure they are experienced with your model. get a few estimates. Use good quality parts (dealer)

Sep 14, 2011 | Ford Explorer Cars & Trucks

2 Answers

My 2000 XLT Explorer makes a 'knocking' noise somewhere in the front end which speeds up as I accelerate. It is loudest at about 50-60km/h and gets quieter from there up... I changed both wheel...


Hello, This could easily be the CV joints. You were in the vacinity of your problem when you changed the hubs. Although the front differential should be checked for gearlube level, the trans fluid is not going into your differential.

You can siphon out the excess trans fluid. The differential is in a floating mode without being engaged, but the CV joints can easily make noise while not being engaged.

I have had a number of clients with 4x4's swear they had problems with the front end. But many have written back to me and let me know thier problem was the front driveshaft U-joint. This is especially true for noises seeming to come from the passengers front side. As the front U-joint is dead center on the vehicle, it is to the right of the Driver so the driver thinks the noise is coming from the far right side.

I hope my solution is very helpful to you.

Aug 26, 2011 | 2000 Ford Explorer

1 Answer

My 2000 XLT Explorer makes a 'knocking' noise somewhere in the front end which speeds up as I accelerate. It is loudest at about 50-60km/h and gets quieter from there up... I changed both wheel...


It could be the CV joint on your front drive shaft. I don't feel that it would be your front differential because if that was going bad you would have one heck of a noise no matter how fast you were going. Hopefully this helps you out a little or at least gives you another place to look if you already have not checked.

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2002 ford explorer xlt 4x4... Vehicle won't start


My 2002 Ford Explorer have the same problem

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2002 explorer drivers window


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1 Answer

Rear Axle Bearing


i know for a fact that the bearing comes with the hub., and if the old bearing is badly damage you may need to heat it to remove it from the axel...so this may be a rather big job if your not equipt
with torch or other ...

May 29, 2008 | 2002 Ford Explorer

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