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Old 03-12-2019, 05:10 PM   #1
NCY-UFO's Avatar
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Mar 2017
Location: Drumbo, Ontario
Posts: 89
Unhappy Workhorse UFO Vibration in 5th Gear

Hello to fellow Workhorse UFO owners. I have a 2008 Workhorse UFO chassis. Itasca Latitude 39W. Just turned 70,000 miles. A new engine was installed at 54,000 miles. On my return home from Florida in early March I was getting a vibration throughout the coach when the Alison trans. was in 5th gear. It runs smoothly in all other gears. Pickup, top speed and cruise are all great, except for 5th.
A good friend who has auto. back ground says it maybe the universal joints.
Any thoughts or similar experience with this problem????
Travelling with my wife Rita, and our Havanese Ambre, in our 2008 Winnebago/Itasca Latitude 39W, Workhorse UFO R26 Chassis, GM Vortec 8.1, Allison 6 spd. and 2016 Chev. Equinox LT in tow.
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Old 03-12-2019, 05:15 PM   #2
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Monaco Owners Club
Workhorse Chassis Owner
Join Date: Apr 2008
Location: Montgomery Texas
Posts: 263
Have 82K on our coach and have not experienced any problems like this. Had small head gasket leak at 62K miles and that was repaired but no other major engine work of any kind.

Hope all works out at minimal cost.

Best Regards
2008 Holiday Rambler Vacationer XL 38PLT

UFO Chassis
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Old 03-12-2019, 08:28 PM   #3
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Location: El Paso Texas
Posts: 146
I would check the u-joints first, have you greased them? Also check Trans oil level.
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El Paso Texas, 2008 Adventurer Limited UFO (Rear Gas Engine), Ultrapower, Magnaflow, MSD Coils, Sumo Springs, TruCenter, flat tow CJ7 & 2018 Civic Hatchback
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Old 03-12-2019, 08:48 PM   #4
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Location: Marquette, Michigan "Da UP" & Lehigh Acres Florida
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Since the engine was replaced I’d want to make sure the torque converter bolts are tight as well and while your in the neighbor the bell housing and front motor mount fasteners as well.
John & Cathy R.
06 Pace Arrow 38L Workhorse W24
08 14 Lincoln MKX AWD 06 Lincoln Mark LT 4X4, 2020 Lincoln Corsair
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Old 03-12-2019, 10:16 PM   #5
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U joint or slip joint wear.
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Old 03-16-2019, 05:33 PM   #6
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Sounds like torque converter bolts to me as well.
2004 Monaco Lapalma PDT W-22, 8.1

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ufo, vibration, workhorse

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