2004 F-350 Problems
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Joined: Jun 2005
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2004 F-350 Problems
In the last month a lot of stuff has started happening to my stock 6.0L 2004 F-350 FX4 with 23K miles.
1. Loss of power and loss of fuel milage, was getting about 515 miles per tank now around 350.
2. When tranny shifts into third I get a rough shift and clanking noise.
3. When braking from highway speeds and reach about 40 mph the rear end starts hopping around.
4. When cruising and reach 2000 rpm I hear a moan/roar.
Anyone else heard of or having these problems?
1. Loss of power and loss of fuel milage, was getting about 515 miles per tank now around 350.
2. When tranny shifts into third I get a rough shift and clanking noise.
3. When braking from highway speeds and reach about 40 mph the rear end starts hopping around.
4. When cruising and reach 2000 rpm I hear a moan/roar.
Anyone else heard of or having these problems?
Last edited by FORDTX; Jun 27, 2005 at 10:34 AM. Reason: More info
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Welcome to FTE, FORDTX 
Without engine type it's hard to diagnose, but I'll do my best for the gasser:
Maybe fuel filter. The gas we're forced to burn these days is trashy to say the least.
Sounds like one for the Auto gurus - sorry, can't help you there.
These rotars are not the best. Sounds like you need a resurface job.
Do you have ESOF? If you do the hubs might still be locked even though your dash light is not on. To check: See if you can turn either front axle shaft by hand when the dial is set at 2WD. Always chock the tires and make sure the key is not in the ignition - just to be safe.
Post other details of the truck, but especially the engine type and size and whether or not it is Shift on the Fly. Also any mods like chips and such.
Again, welcome aboard and please read the Guidelines and check the Read First topics at the tops of each forum you visit.
Enjoy the site
Without engine type it's hard to diagnose, but I'll do my best for the gasser:
Loss of power and loss of fuel milage, was getting about 515 miles per tank now around 350.
When tranny shifts into third I get a rough shift and clanking noise.
When braking from highway speeds and reach about 40 mph the rear end starts hopping around.
When cruising and reach 2000 rpm I hear a moan/roar.
Post other details of the truck, but especially the engine type and size and whether or not it is Shift on the Fly. Also any mods like chips and such.
Again, welcome aboard and please read the Guidelines and check the Read First topics at the tops of each forum you visit.
Enjoy the site
Senior User
Joined: Jun 2005
Posts: 194
Likes: 0
Sounds like you're headed to the dealer. I agree with the fuel filter comment, the rough shifts can be fixed with a computer reflash (odds are), front end starts hopping is definitely dealer, and the moan is common to the 6.0.
Posting Guru
Joined: Nov 2002
Posts: 1,222
Likes: 4
From: Texas
Don't know what to tell you--mine is fine at 82K miles.
Not sure what would cause rear end to hop, shouldn't ever happen.
I have never seen over 490 miles/tank on my 29 gallon tank--is yours a long bed? If you were getting 515 out of the short bed, that was excellent.
The moan/roar has started along with the lower mileage?
If you're in NTX, take it to Payton-Wright in Grapevine. They have an excellent tech, think his name is Ray.
Not sure what would cause rear end to hop, shouldn't ever happen.
I have never seen over 490 miles/tank on my 29 gallon tank--is yours a long bed? If you were getting 515 out of the short bed, that was excellent.
The moan/roar has started along with the lower mileage?
If you're in NTX, take it to Payton-Wright in Grapevine. They have an excellent tech, think his name is Ray.
