Help needed

• The vibration occurs at speeds above 35mph and fairly quickly reaches its maximum and stays that way at all speeds
• The vibrations occurs in any gear
• When I change gear or let off the throttle the vibration stops to return as soon as the vehicle is under load.
• I have checked the prop shaft joints and they seem ok
• I have run the vehicle for a short while with diff lock and the vibration is similar.
• I ran the vehicle in low ratio in all gears and there was no vibration at all. I only went up to about 30mph.

muppetslayer said:

Hello everyone... I need some of your expert advice

I have a 1987 90 turbo diesel with 149,000 miles on the clock. Yesterday and today it has developed a major vibration. What is causing it?

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• The vibration occurs at speeds above 35mph and fairly quickly reaches its maximum and stays that way at all speeds

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  Engine vibration or steering vibe?

• I have run the vehicle for a short while in four wheel drive and the vibration is similar.

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  errmm 90 is permanent 4wd. so I'm assuming yu mean yu engaged difflock??

• I ran the vehicle in low ratio in all gears and there was no vibration at all. I only went up to about 30mph.

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  So it's speed related which seems to point to bushes/bearings/props