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Old 01-28-2019, 03:57 PM   #1
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Join Date: May 2018
Location: Freeport
Posts: 348
Strange Vibration

We have a 2007 Damon Daybreak with ford V10 needless to say. The MH starts and runs fine no problems at any time other than a bad vibration under full throttle at cruise speed. The engine is throwing no service engine light and is smooth running other than when running 60-65 and put my foot in it for a hill or to speed up. It shakes like going over rumble strips on the road is the best I can describe it. I know a fair about engines as I build street rods as a hobby. Anyone have the same problem or suggestions?

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Old 01-28-2019, 04:20 PM   #2
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Join Date: Jul 2014
Posts: 22,329
Take a look at the U joints and the driveshaft support bearing.

Chock the wheels, put in neutral and climb under.

Loosness of U joints or rust around the caps are signs of being bad. Support bearing will be loose and move in the rubber support.

If all of that checks out, you may have an engine problem.

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Old 01-29-2019, 04:31 PM   #3
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Join Date: May 2018
Location: Freeport
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Thanks twinboat, will check them out. Most of the time when I have dealt with bad U's they vibrated on decell also but will crawl under when it gets just a little warmer.
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Old 01-30-2019, 12:25 PM   #4
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Join Date: Nov 2015
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I bought MH last year had complete service records over last 5ooo mi front aligned 2 times new tires balanced 3 times new u joints new plugs and boots it would vibrate steering wheel under load .. I google MH vibrate under load ? anyway BAD IGN COIL took off eng cover engine shook very little started to switch out coils .. wow 1st one I changed no problems anymore … well that's what happened to me.good luck
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Old 01-30-2019, 12:27 PM   #5
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The last owner was chasing the problem for over 2 yrs he changed everything but coils!
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