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05-07-2011, 05:50 AM
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#1
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Registered User
Join Date: Oct 2010
Location: Central Florida
Posts: 525
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Ford Shift Points
We have a 2011 motor home with a Ford V-10 & the Ford 5R110W transmission. It seems to me that the engine over rev's prior to shifting into the next gear, especially noticeable when entering onto a freeway ramp. I have not been into a Ford garage yet to have it checked, but was wondering if anyone else seems to notice this. Maybe it is just me and everything is doing what it is supposed to.
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R & E
No RV at the moment
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05-07-2011, 09:09 AM
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#2
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Senior Member
Join Date: Jan 2010
Posts: 474
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Please better describe 'overrev' at what rpm is it shifting and what is the throttle position?
I will say that the stock shift strategy was the biggest reason I had VMP retune my coach. I seldom use full available power but the shifts allways seemed ill timed, wrong gear and abnoxious downshifting. The tune cured all that and the drive train is much more setteled and runs great.
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38ft 2008 Damon Daybreak 3575 (forward kitchen)on Ford 22,000lb chasis, 242" WB.
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05-07-2011, 09:31 AM
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#3
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Senior Member
Forest River Owners Club Freightliner Owners Club
Join Date: Sep 2007
Location: Rancho Cordova, California
Posts: 1,038
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OSP,
Since you are under warranty, take the time to go to a Ford Truck center and let them tell you if anything is abnormal under any throttle position.
I have a Class A 2008 Ford 362 HP Triton 30-valve V-10 and it shifts "normally" to me. I never push it and use tow/haul gear while traveling in mountain regions. 55-60 MPH is the law in CA while towing.
Steve
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05-07-2011, 10:44 AM
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#4
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Senior Member
Join Date: Apr 2011
Location: Northwest Indiana
Posts: 326
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For what it's worth, I've driven a few newer motorhomes with that driveline and they all seemed to "late" shift compared to a car or 1/2 ton truck. I think that's primarily because an RV has a greater strain on the trans so the preset line pressure is increased in the transmission and later shifts are a result. The late/harder shifts may not be as comfortable, but decrease wear and tear on the transmission.
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05-07-2011, 01:22 PM
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#5
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Senior Member
Fleetwood Owners Club American Coach Owners Club
Join Date: Mar 2011
Posts: 6,768
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If the Tow/Haul mode is being used, it increases the shift points to a higher RPMs.
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2014 American Eagle 45T
DD 13, 500 HP
Pulling a Honda CRV
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05-07-2011, 03:54 PM
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#6
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Senior Member
Damon Owners Club Ford Super Duty Owner
Join Date: Apr 2011
Posts: 500
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I have the same configuration in a Damon Challenger, and I think that you will find that there is nothing wrong, it is simply the "nature of the beast". I have learned to be more "sensitive" when starting out and when accelerating in general, especially with the gas prices being what they are (and may become). There seems to be plenty of power from this set-up and I think it just takes some getting used to how best to get power to the wheels. I love this V-10, however, and after talking to many Ford V10 owners, they seem to think that the engine is one of the best gas engines on the market - dependable and powerful. Keep us informed as to what you learn, if you go to the dealership. I'm sure other Ford owners would benefit from your experience.
Bronk
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05-08-2011, 04:00 PM
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#7
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Senior Member
Join Date: Jan 2010
Posts: 474
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Quote:
Originally Posted by gauto5150
For what it's worth, I've driven a few newer motorhomes with that driveline and they all seemed to "late" shift compared to a car or 1/2 ton truck. I think that's primarily because an RV has a greater strain on the trans so the preset line pressure is increased in the transmission and later shifts are a result. The late/harder shifts may not be as comfortable, but decrease wear and tear on the transmission.
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Just fyi,
In a modern electronicly controlled automatic transmission, shift firmness as controlled by clutch pressure is completley independent of rpm shift point. IE the trans can be told to shift at any point and at any desired clutch application rate. The pressure to the clutches is computer controlled. Thats why the tuners adjust shift strategy as well as engine performance to better suit the actual load and highway use of the motorhome.
__________________
38ft 2008 Damon Daybreak 3575 (forward kitchen)on Ford 22,000lb chasis, 242" WB.
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05-08-2011, 08:43 PM
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#8
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Registered User
Monaco Owners Club
Join Date: May 2009
Posts: 3,198
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I had a 99 pacearrow that was terribly rev happy. A good tune from Brazels got everything under control.
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05-09-2011, 07:23 AM
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#9
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Member
Join Date: Sep 2008
Posts: 75
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I'll repost what I stated in another thread.
I installed a 5Star tune (they are a sponsor of one of the forums here) in my Daybreak F53 V10 . I took a trip that started in Maryland, to Savannah, across to Nashville, up to St. Louis, then to Kansas, back to Maryland. I had a toad behind me the entire trip.
The things I noticed:
1. Acceleration response was quick.
2. Shift points were where I thought they should be. Meaning, I would think, "shouldn't this thing be shifting right about....oh...there it goes". I would categorize the shifting schema as a dramatic change...for the good. No more screaming engine in the mountains.
3. Fuel mileage was, maybe 2-3 tenths of a gallon better. More travel will help with less mountains in the way.
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2008 Daybreak 3578 on a Ford F53 V10 228" WB 20.5K Lb Chassis
Four-Down towing a 2008 Ford Escape
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10-06-2011, 05:48 PM
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#10
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Senior Member
Join Date: Dec 2000
Location: Florida
Posts: 128
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My 2011 36' Bounder on 2010 F53 chassis also seems to wind out before shifting, sometimes up to 3500 RPM before a shift. I'm not overloaded as I even noticed it on the test drive when it was empty. If I let up on the pedal it seems to help it shift. Is this normal or should I go to Ford?
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2019 Jayco Precept 31UL
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10-06-2011, 06:20 PM
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#11
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Senior Member
Join Date: Jan 2011
Location: Debary Fl
Posts: 465
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I had a 1999 M/H with a V10 that I bought sight unseen. On the 300 mile trip home I thought it was turning to many RPS before shifting. I am a manager for a 400 GM vehicle fleet, and not up to speed on ford V10's. So a call went to a friend of mine who is a long time ford truck service manager and had him come drive it, all was fine. the V10 is 6.8L displacement with 10 cyls, by compairson a GM 8.1L has 8 cyls so a much bigger bore and makes it's power at a lower RPM. The V10 with the smaller bore make it's peak power at a higher RPM. I know the guy that bought the coach from me, and at 95K it's still screaming with no problems. They do sound like they are coming apart though.
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Bruce Linda and Zoey
1999 ForeTravel U295
012 orange Jeep Wrangler
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10-06-2011, 08:01 PM
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#12
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Registered User
Monaco Owners Club
Join Date: May 2009
Posts: 3,198
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Again, I call part throttle upshifts at 3500 to 4000 rpm just not required. A "chip" will fix it. Just cause it's the way Ford built it don't make it right.
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