URN (Unidentified Random Noise)

[Whack]

What does you transmission fluid quality and level look like?

 

[Stoned06]

As far back as the rear axle, or just behind the engine?

 

[eddiemoney]

Fluids all look okay, nothing looks out of place...

As far as where...its very hard to place - It seems loudest in the second row

 

[Stoned06]

A light throttle whine sounds like it could be the differential whining caused by excessive backlash in the gears.
I had this in an Explorer I had. Coasting had absolutely no noise, light throttle had the whine, esp at higher speeds (50-70), and getting on it produced no noise (or at least couldn't hear it over the engine).
Put your 2nd and 3rd row seats down and see if you can be more precise in the location. Wheel bearing is also a possibility, but the throttle position makes me believe it is the differential.

Are you still under warranty?

 

[eddiemoney]

A light throttle whine sounds like it could be the differential whining caused by excessive backlash in the gears.
I had this in an Explorer I had. Coasting had absolutely no noise, light throttle had the whine, esp at higher speeds (50-70), and getting on it produced no noise (or at least couldn't hear it over the engine).
Put your 2nd and 3rd row seats down and see if you can be more precise in the location. Wheel bearing is also a possibility, but the throttle position makes me believe it is the differential.

Are you still under warranty?

Oh yes, still warranty (bought the 7 year because I don't trust Fords nearly as much as our Subaru )....but I always get leery about taking in random noises to the dealer so they can't reproduce

 

[PabloHoney]

I just bought a 2008 XLT with 109k on the clock. Only thing I can find wrong with it is the same noise described on this thread. Only happens when coasting. Touch the gas and it goes away. eddiemoney, did you even find what was causing the noise on yours?


Sent from my iPad using Tapatalk

 

[eddiemoney]

Negative, been living with it for 50k miles, several years, and dealers never being able to identify any causals. It happens almost everytime I get on the highway. Very discouraging.

 

[stamp11127]

Depending on how bad you want to find it:

ChassisEar Squeak and Rattle Finder - Multi Mic Stethoscope (Steelman: model 6600)

 

[eddiemoney]

That's a lot of outlay for something I can find everytime I drive it, but the dealer used 200 miles and a whole bunch of gas for nothing.....computer mechanics vs real ones is my guess. I have money on some sort of transmission issue, but its not broken...

 

[mrford60]

take the tube off the throttle body and see if carbon is around the throttle blade. if so clean it out with carb cleaner and a swab. it could cause the wine