Roadtrip!!!!!!
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Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
That was cruise control set 5-7 mph over majority of the time. I mean we run through a little mountains. 14.7 was hand calculated the first tank. Like I said I think the second tank will be better.
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Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
Ya. Hoping didn’t work. 14.7 mpg hand calculated on the second tank as well.
I am trying to figure out a driveline issue currently. My mid shaft bearing is bad I think.( Has movement up and down) So I have one on order, hope I got the right one. U joints look fine from the outside, I understand that doesn’t mean anything but I don’t have the tool supplies and work area to change them out, so I am hoping the mid shaft bearing is the main cause of the vibration I am getting. And I can take the driveshaft to my local shop back at home to take care of all that.
High pitched whine when on the throttle and a sound like running over rumble stripes on the highway just before a stop or low speed.
It has only been doing the whine recently and the rumble is just in the past few days.
What is it with trips and issues?? Why can’t it just be smooth. I want a truck to just get in and drive. But do realize I can’t afford that so it it what it is. I hope I am on the right track.
I am trying to figure out a driveline issue currently. My mid shaft bearing is bad I think.( Has movement up and down) So I have one on order, hope I got the right one. U joints look fine from the outside, I understand that doesn’t mean anything but I don’t have the tool supplies and work area to change them out, so I am hoping the mid shaft bearing is the main cause of the vibration I am getting. And I can take the driveshaft to my local shop back at home to take care of all that.
High pitched whine when on the throttle and a sound like running over rumble stripes on the highway just before a stop or low speed.
It has only been doing the whine recently and the rumble is just in the past few days.
What is it with trips and issues?? Why can’t it just be smooth. I want a truck to just get in and drive. But do realize I can’t afford that so it it what it is. I hope I am on the right track.
Senior User
Joined: Dec 2017
Posts: 296
Likes: 3
From: Ontario, Canada
That's the demon in these engines... do every mechanical maintenance item and upgrade to make them reliable as possible, (which isn't very), and find out at the end of it all that they are not exactly mileage wonders either. 
I call them one of the less impressive moments in engineering history.
Don't get me wrong, I'm not hating on them, I drive one now and have had several.
I call them one of the less impressive moments in engineering history.
Don't get me wrong, I'm not hating on them, I drive one now and have had several.
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Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
Correct I am tuned. Running a performance tune currently. I am looking into a economy tune currently. Like the pep, but would like move better. Not sure if it would be any better but worth a shot.
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Cargo Master
Joined: Dec 2003
Posts: 2,022
Likes: 4
From: Redford, Mi.
I get 17 to 19 on the highway all the time empty, on a no power setting on my mini max, jump it up to the 300 HP tune and it get's slightly better but you can't hardly drive the truck without jerking your neck off. On the high tune the throttle response is so sensitive with Michigan roads at low speeds every bump causes your foot to move ever so slightly and so does the truck.
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Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
I get 17 to 19 on the highway all the time empty, on a no power setting on my mini max, jump it up to the 300 HP tune and it get's slightly better but you can't hardly drive the truck without jerking your neck off. On the high tune the throttle response is so sensitive with Michigan roads at low speeds every bump causes your foot to move ever so slightly and so does the truck.
Cargo Master
Joined: Dec 2003
Posts: 2,022
Likes: 4
From: Redford, Mi.
I do have another slight advantage as mine is only 2 WD.
Junior User
Joined: Dec 2017
Posts: 57
Likes: 0
From: Show low, AZ
I've read more than once that these trucks, mine included, seem to get better mileage on the higher than stock horsepower Tunes than on the stock Tunes. Doesn't make much sense to me, but I'm definitely not complaining.
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Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
Well I took my driveshaft off and took it to a driveline shop I have used before where we are vacationing. Guy went through the driveshaft and said everything was good except the center support bearing. So I had that replaced. Came home and reinstalled. The shop seems to know there stuff pretty good but I have the bad feeling they didn’t install the rear shaft in the same place. I marked the driveshaft and chocked the wheels on the truck. So it should have went back in the exact same spot. I had to rotate the rear piñon a half a turn. Gonna take it for a test drive. I guess we will see what the results are. Hopefully all is well.
Junior User
Joined: Dec 2017
Posts: 57
Likes: 0
From: Show low, AZ
WELL I too took my driveshaft off and took it to a driveline shop I have used before where we are vacationing. Guy went through the driveshaft and said everything was good except the center support bearing. So I had that replaced. Came home and reinstalled. The shop seems to know there stuff pretty good but I have the bad feeling they didn’t install the rear shaft in the same place. I marked the driveshaft and chocked the wheels on the truck. So it should have went back in the exact same spot. I had to rotate the rear piñon a half a turn. Gonna take it for a test drive. I guess we will see what the results are. Hopefully all is well.