Hopping feeling at 70 - 80 km/h - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 08-15-2013, 09:02 AM Thread Starter
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Hopping feeling at 70 - 80 km/h

Truck is a 2007 F250 Lariat 4X4. Over the past several months I have been getting an intermittent hopping feeling from the rear end between 70 - 80 km/h. Thought it may have been a balancing issue so had the tires all road force balanced but still the same issue. Rear end bearings were done in January. Anyone with similar issues?


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post #2 of 8 Old 08-22-2013, 12:43 PM
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having same issue with customers 05. New shocks, diff bearings, wheel bearings, tires balanced. Tires are toyo AT's.

Black 2004 F-250 Sport Crew Short, 4" hanger drop, dual bilstein, 35" KM2's, DP 1 piece block w/.75" u-bolts. Swamp's 58V FICM, SCT w/SLR.
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post #3 of 8 Old 08-25-2013, 08:58 PM
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Is it hopping or skipping? FICM and/or injector failure can do the same thing. Just a thought. Before I replaced my FICM I would get what felt like a hop between 55 - 65 MPH. Turned out my FICM was failing. Might want to check it out and it's free so what can it hurt? Good luck and let us know what you find out.

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post #4 of 8 Old 08-26-2013, 06:22 AM Thread Starter
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Quote:
Originally Posted by Deer Creek View Post
Is it hopping or skipping? FICM and/or injector failure can do the same thing. Just a thought. Before I replaced my FICM I would get what felt like a hop between 55 - 65 MPH. Turned out my FICM was failing. Might want to check it out and it's free so what can it hurt? Good luck and let us know what you find out.
I wondered the same thing but I've found that if I shift into neutral and coast at the same speed that the hopping feeling is still there.


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2007 Lariat FX4 Crew Cab
275/75/18 Goodyear Duratracs
9000 lb Warn Front Hitch
08 Aluminum rear diff cover
HID headlights
Edge CTS Insight
SCT SF3 flash tuner
Blue spring mod
6.4 banjo bolts
high idle mod
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post #5 of 8 Old 09-13-2013, 11:59 PM
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The dreaded Super Duty vibration... Lots of people complain about this, never heard of a complete 100% cure. Some brand new trucks do the same thing.

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post #6 of 8 Old 06-27-2014, 02:26 PM
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supposedly this is due to the wide wheel base causing a hop feeling...

Vibration/Hop at 40-48 MPH, Trucks with Trailer Hitch:
Some 2005-07 F-Super Duty trucks with long wheel base (over 156") may exhibit what is described as a hop on smooth or coarse road surfaces. Although Ford considers this to be characteristic of trucks with a GVW of over 8500 pounds, some drivers may be more sensitive to the condition. There is a damper kit (P/N 5C3Z-5D008-A) available to correct the hop under the described conditions. It will not correct shimmy, harsh ride or vibration after hitting bumps. TSB #07-5-11.
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post #7 of 8 Old 07-03-2014, 08:23 AM Thread Starter
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Since I originally posted this question I've noticed that the hopping isn't constant. It will hop for a day or two then it will smooth out for a few days. Could shocks be the issue??


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2007 Lariat FX4 Crew Cab
275/75/18 Goodyear Duratracs
9000 lb Warn Front Hitch
08 Aluminum rear diff cover
HID headlights
Edge CTS Insight
SCT SF3 flash tuner
Blue spring mod
6.4 banjo bolts
high idle mod
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post #8 of 8 Old 08-04-2014, 03:27 PM
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for me it's the concrete freeway and only in certain spots....no hoppy on asphalt.
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