[05FrontierOwner]

Evenin' everyone!

I've got an 05 Frontier XE (the base model 2.5L) and i've been hearing a hissing noise coming from the rear of the truck for well over 4 years now. It sounds like something is dragging on the rotor but I've been into the rotors twice and found no issues, no marks on the rotors looking like anything is scraping/dragging. Most recently I replaced the rotors, pads, e-brake pads, and e-brake springs to be safe. Cleaned everything to make sure no rocks/road tar was caked up... and still a hissing noise that gets louder as I accelerate. It doesn't change pitch UNLESS the truck goes over dips/bumps etc and the body/bed gives (little up little down).

It's not a grinding noise or a squealer like on the brake pad... just a hissing noise. I'ts not a growl like a differential going bad (I've heard those before) and if it was a wheel bearing I'd expect some cupping on one tire or the other, but that's fine. Maybe a u-joint??? I did note that when Iv'e changed out my pads they're pretty tight against the rotor on the reassembly, but I'd expect those to wear a little shortly after installation making the sound stop.

This one's driving me nuts and expensive to keep trying things so any ideas would be appreciated.

Thanks,

JT

 

[05FrontierOwner]

Evenin' everyone!

I've got an 05 Frontier XE (the base model 2.5L) and i've been hearing a hissing noise coming from the rear of the truck for well over 4 years now. It sounds like something is dragging on the rotor but I've been into the rotors twice and found no issues, no marks on the rotors looking like anything is scraping/dragging. Most recently I replaced the rotors, pads, e-brake pads, and e-brake springs to be safe. Cleaned everything to make sure no rocks/road tar was caked up... and still a hissing noise that gets louder as I accelerate. It doesn't change pitch UNLESS the truck goes over dips/bumps etc and the body/bed gives (little up little down).

It's not a grinding noise or a squealer like on the brake pad... just a hissing noise. I'ts not a growl like a differential going bad (I've heard those before) and if it was a wheel bearing I'd expect some cupping on one tire or the other, but that's fine. Maybe a u-joint??? I did note that when Iv'e changed out my pads they're pretty tight against the rotor on the reassembly, but I'd expect those to wear a little shortly after installation making the sound stop.

This one's driving me nuts and expensive to keep trying things so any ideas would be appreciated.

Thanks,

JT

...by the way 235k miles and bought it new so I know nobody was pulling trailers or rawdogging the truck...

 

[idlafie]

Two things come to mind....
1). Rear Axle Breather, (although I admit, I DOUBT it would hiss though),

38322-41L00 Genuine Nissan #3832241L00 BREATHER Rear Axle Case

NissanPartsDeal.com offers the great deal for genuine Nissan parts 38322-41L00 (3832241L00) BREATHER Rear Axle Case for $10.38. All parts are backed by the Nissan's warranty.

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OR 2). Center Bearing Assembly.....

37520-EA000 Genuine Nissan #37520EA000 Bearing Assembly, Center

NissanPartsDeal.com offers the great deal for genuine Nissan parts 37520-EA000 (37520EA000) Bearing Assembly, Center for $127.86. All parts are backed by the Nissan's warranty.

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With over 235K miles on it, I'm pretty sure the bearing inside of it has probably gone bad. With the bearing gone bad though, you would figure you would feel vibration from the drive shaft as it rotates rather than hearing a hissing sound....???....

IF it's the center bearing assembly, here's a YouTube video showing you how to replace it...

Hope this helps.... Good Luck!!

 

[JVRaley]

Cobra in the back seat?