Help ID vibration/noise @40 MPH - 50 MPH Disco 2
#1
Help ID vibration/noise @40 MPH - 50 MPH Disco 2
I have a 2002 Discovery 2 SE, 62,000 miles.
Scenario is when accelerating all is smooth and good until almost exactly 40 MPH, at this point (every time) a vibration and noise start. It is a low hum/buzz that sounds a lot like the tires were all of a sudden hitting the rumble strips on the side of the road although not really that loud or obvious. The hum seems to decrease significantly as soon as I am accelerating over 50 MPH although not completely.
The sound/vibration only happens when accelerating. When I let off the accelerator at any speed above 40, it completely goes away.
I can feel the vibration through the pedal/body. I cannot feel anything through the steering.
I had the front driveshaft replaced about 5 thousand miles ago.
Any idea of what this issue might be or how I could systematically figure out how to approach resolving it?
Thanks in advance
Scenario is when accelerating all is smooth and good until almost exactly 40 MPH, at this point (every time) a vibration and noise start. It is a low hum/buzz that sounds a lot like the tires were all of a sudden hitting the rumble strips on the side of the road although not really that loud or obvious. The hum seems to decrease significantly as soon as I am accelerating over 50 MPH although not completely.
The sound/vibration only happens when accelerating. When I let off the accelerator at any speed above 40, it completely goes away.
I can feel the vibration through the pedal/body. I cannot feel anything through the steering.
I had the front driveshaft replaced about 5 thousand miles ago.
Any idea of what this issue might be or how I could systematically figure out how to approach resolving it?
Thanks in advance
#2
#3
Scout,
Thanks for your reply. I looked at the coupler and it looked all good, no apparent wear or cracks, etc.
When I get back in town I'll have to get under for a more complete inspection. I think I may take the front drive shaft out and lock the CDL to eliminate that portion of the drive train as a test.
Thanks for your reply. I looked at the coupler and it looked all good, no apparent wear or cracks, etc.
When I get back in town I'll have to get under for a more complete inspection. I think I may take the front drive shaft out and lock the CDL to eliminate that portion of the drive train as a test.
#4
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#7
Resolution
Was working in the Jacksonville area and found British 4x4. Took the disco over to James, he put it on the lift right away after a test ride and checked the drive train.
In the end with some significant diagnosis turns out the front dif was mostly full of water and there were metal shavings. The dif was rebuilt, but still some vibration left. James swapped the front drive shaft, replaced only 5k miles ago and the vibration was gone. Said my mechanic got the drive shaft for a 03-04 instead of my 02.
Rides like new. Really pleased with the help I got.
In the end with some significant diagnosis turns out the front dif was mostly full of water and there were metal shavings. The dif was rebuilt, but still some vibration left. James swapped the front drive shaft, replaced only 5k miles ago and the vibration was gone. Said my mechanic got the drive shaft for a 03-04 instead of my 02.
Rides like new. Really pleased with the help I got.
Last edited by dirtbag; 05-24-2015 at 08:05 AM. Reason: auto correct messed up spelling of dif
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