Rough Shaking as power is added!

[greyfoxvt]

I have a 1999 Disco I that just turned 100,000 miles. I take very good care of my beast, and just yesterday had $1800.00 of work rebuilding the front ball joints, and packing all the bearings, etc. However, I still have the same vibration I had when I brought it to the 4X4 center for repair.

Symptoms seem to be a vibration which increased as power is added, when in netural, no vibration coasting without power, no vibration, letting up on gas while driving, no vibration, but add power and I get vibration. It seems to get louder, and stronger as speed in increased.

Had the U-Joints check, and two people have indicated the rear joint on the front shaft is showining signs of slight movement, but dealer claims this is not the problem. He says it is the engine and lifters which do not allow power to increase correctly, yet the engine idles like new, and reves without a hitch, so what am I missing?

Confused, and getting poorer based on repair guesses...

Greyfoxvt

 

[greyfoxvt]

Possible Solution

I just removed my forward propshaft and have discovered the rearward universal joint to be failing. There is some noticable movement, the question is how much can cause the vibration I was feeling? While I have it out, I will replace it with a new one, but does anyone know about the upgrade kit for the flange from LR to decrease vibration? How would I know if I have it or need it?

 

[discomike]

It is very common to have the double cardon set of u-joints fail, they came from the factory without grease fittings. Make sure you have serviciable u-joints installed and install zerks on both the front and rear drive shafts also.
Then go back and hang that shop for some of your hard earned money.
Mike J.
99 D2