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Old 03-18-2016, 11:12 PM   #1
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2015 Itasca Tribute 31C gas mileage issues

Hi everybody. I'm new to the site and I have a question. We have a '15 Tribute 31 C. It's a fun little rig but the gas mileage is horrible. Last trip from Yuma to Casa Grande (AZ) we got 5.2 MPG. I should add we were towing a Scion XB. we took the rig to Ford in Tucson and they say everything checked out. We had a 2009 Damon Challenger with the same V10 and got consistently 7.3. This rig is smaller and lighter and I really expected at least the same mileage. Any thoughts?
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Old 03-18-2016, 11:42 PM   #2
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What speed are you driving? Wind? The other thing to maybe check is, raise each axle and spin the tires by hand. There were a number of reports of badly adjusted wheel bearings that created a lot of drag and heat.
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Old 03-18-2016, 11:50 PM   #3
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63 mph, 8mph cross wind.
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Old 03-19-2016, 05:25 AM   #4
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We drove from Ajo, AZ to Willcox, AZ and had 5.5 in a 36' towing a CRV. You are going uphill all the way, 1500'(Ajo) to 4000'(Willcox). Pretty much the poorest mileage of a 6000 mile trip.

We do have a 5 Star tune. I don't know if that would make any difference.
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Old 03-19-2016, 07:01 AM   #5
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Engine broken in? High ethenol content? Toad dragging? So many variables. My rig is similar and got similar mileage once on a tank where we went mostly uphill against the wind.
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Old 03-19-2016, 07:05 AM   #6
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I think a bigger sample is needed to gauge what the fuel mileage is. Give it a couple three more tanks.
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Old 03-19-2016, 09:17 AM   #7
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Thanks all. I guess I should have added a few things. We bought this rig in April of last year. It now has 4500 miles on it. The mileage started at low 6 mpg, went up to about 6.75 and then started this consistent drop and has not been out of the "5's" since December. We had a 2009 Damon Challenger 348 before this and consistently got 7-7.5 even going up to the Eisenhower tunnel in Colorado.
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Old 03-19-2016, 11:01 AM   #8
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Quote:
Originally Posted by Ssyer74 View Post
Thanks all. I guess I should have added a few things. We bought this rig in April of last year. It now has 4500 miles on it. The mileage started at low 6 mpg, went up to about 6.75 and then started this consistent drop and has not been out of the "5's" since December. We had a 2009 Damon Challenger 348 before this and consistently got 7-7.5 even going up to the Eisenhower tunnel in Colorado.
Are you using the tow hauling mode on the transmission? Should not need it. What rpms are you cruising at?
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Old 03-19-2016, 12:26 PM   #9
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Yes, tow/haul switch is on. 63mph @2000rpm
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