HardCorps79
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- Kansas City, MO
Loss of power and shuddering- it was the U-joint!
So after a week of lovely in-town driving, I took the M1009 out on the freeway and the evil shuddering came back. It does fine accelerating and shifting in town, and is good for about 15-20 minutes on the freeway, but after that it gets weird:
At high RPMs in 2nd gear and low RPMs in 3rd (40-60mph), it shudders like an off-kilter washing machine on a spin-cycle, both accelerating and decelerating, and feels sluggish with both speeding up and slowing down. Then if I come to a stop, it does the same sluggish, low-power, shaking and struggling to get over 40 mph. Once I get over 65mph it stabilizes.
If I let the truck cool down for a good hour or two, it runs just fine again.
It will run in-town all day with no problems doing 55 for 20-30 minutes, getting to 65 for short periods, but over 60mph for 20 minutes and it gets stupid. What gives?
I know I need to change the transmission fluid/filter, and am probably due for another oil/filter change and fuel filter (been about 3,000 miles), but this seems to be a beast of a different nature.
Time for a tranny rebuild? New transmission oil-cooler lines? Harmonic balancer? Vacuum pump? Sticking governor? Fuel delivery problem? I really am at a loss here. Any advice would be great.
So after a week of lovely in-town driving, I took the M1009 out on the freeway and the evil shuddering came back. It does fine accelerating and shifting in town, and is good for about 15-20 minutes on the freeway, but after that it gets weird:
At high RPMs in 2nd gear and low RPMs in 3rd (40-60mph), it shudders like an off-kilter washing machine on a spin-cycle, both accelerating and decelerating, and feels sluggish with both speeding up and slowing down. Then if I come to a stop, it does the same sluggish, low-power, shaking and struggling to get over 40 mph. Once I get over 65mph it stabilizes.
If I let the truck cool down for a good hour or two, it runs just fine again.
It will run in-town all day with no problems doing 55 for 20-30 minutes, getting to 65 for short periods, but over 60mph for 20 minutes and it gets stupid. What gives?
I know I need to change the transmission fluid/filter, and am probably due for another oil/filter change and fuel filter (been about 3,000 miles), but this seems to be a beast of a different nature.
Time for a tranny rebuild? New transmission oil-cooler lines? Harmonic balancer? Vacuum pump? Sticking governor? Fuel delivery problem? I really am at a loss here. Any advice would be great.
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