Ford Super Duty (1999-2016) :: 2008 F250 - No Power At All Loaded And Unloaded And Really Bad Fuel Mileage
Apr 27, 2015
I've got a 08 f250 ext cab long box with the 5.4 gas. I know I know 3/4 ton gas. Trucks got NO power at all loaded and unloaded and really bad fuel mileage. Driving like a grandpa in town I'm getting 7mpg on the hwy unloaded I get 9 or 10mpg loaded on the hwy the trucks working way harder than it should and getting 6mpg.... I'm wanting to swap the 5 4 for a 6.0. Reason I saw 6.0 is my buddy's done egr delete. Bulletproof oil cooler head studs and a edge with attitude chip and has great power and reasonable fuel mileage. How hard is it going to be swapping the motors.
View 10 Replies
Advertisement
My 2014 f250 4x4 crew cab with 6.2l gasser only gets about 7.5-8 mpg at 65 mph while pulling my 27' bumper pull travel trailer. I know that thing is basically a wall trapping the air but is there anything I can do to gain a couple mpg more? I can average about 15 mpg at 65 mph without the trailer on the highway.
View 14 Replies
I've changed my knock sensor, my o2 sensor, fuel filter, air filter, alternator, and cut out my cat. Still can't figure out why my truck has no power?
View 7 Replies
I have this bucking a jerking when pulling my Sundowner LQ horse trailer, primarily in the 40-50 mph range. I can let off throttle and it stops but resumes unless I feather the throttle.... 2008 f 350, 4WD, 6.4, 48k miles....
View 1 Replies
I recently purchased this truck and have towed a couple of times with it. It has 98,000 miles and I do not know if the automatic transmission fluid has been changed. Should I have it flushed or drop the pan and change it? I have a lift so doing the change is no problem, although it might be worth it to pay a transmission shop to do it.
Also, I hear what appears to be like a heat shield rattle or something that sounds kinda like an exhaust leak during loaded acceleration. What to look for to locate the noise? One last question, the air bag light is on sometimes then off sometimes. Any known air bag light issues? I love the truck, hate the gas mileage!
View 11 Replies
Ok, so I got this new Superduty that requires 80 psi in the rear tires and 70 psi in the front for 17" tires. What psi are you guys with similar vehicles using when driving around unloaded?
View 13 Replies
I have owned a 2003 v10 triton f-250 now for 8 years and when I first got the rig I was getting 11.5 mpg mixed driving. As the years and miles went on the mileage got worse and worse and now I'm lucky to get 4.5 mpg.
View 14 Replies
1999 f-250 super duty... okay, here is what i have going on. basically no power to the fuel pump. For the last 2 weeks the fuel pump relay and 1 of the relays behind the radio (next to the blue relay) would chatter and the truck would die. Wait about 5 minutes and turn the key on and if the chatter was gone then it would fire up and run... So NOW no chatter on either relay and not cranking up. - motor turns over just fine- just no power to fuel pump. So I changed out the relay- both behind the radio and the one under the hood. still chatters and no start. i have checked the Inertia switch and 12 volts there... Here is my question, when i turn the ignition on, i have no power to the base of the Fuel Pump Relay.... Where does the power come from to power the relay???
View 13 Replies
6.4 diesel 2008 F250.... I have been having lots of trouble with low power and sputtering of this diesel truck . It almost seems like a fuel filter but I changed them out 2 times now and the same thing keeps happening . It has been a very cold winter here and if there was any water - it would freeze.
If I am going down the highway and it starts to sputter. I put transmission into neutral and shut motor off with key. Start it up and it's good for less than a minute or two and it's back to sputtering.
View 5 Replies
2012 F-250 super cab 4x4, 6.7 and just over 100k on the odometer. He pulls a 20' landscaping trailer with about 3000lbs of gear on a daily basis. He drives the same rounds weekly and the truck is dealer serviced. His trips to the pump used to be every 7 days and are now occurring every 3-4 days. He's down to 10.4 mpg. I usually can pull better mileage with the 6.2 pulling said trailer.
View 10 Replies
On the highway doing 100 mph. during af take over, my Ford F-250 6,4 Super Duty 2008, lost nearly all power. (now it is like driving my old hummer h1)
Engine and car runs/starts great, only 10 minutes uptil 60 mph. now.
My mechanic has given up. He checked following:
EGR = OK
HOSES = OK
ERROR CODES = NONE
INTER COOLER = OK
PARTICLE FILTER CLEAN = OK
TEST WITHOUT EXHAUST = NO DIFFERENCE
FLUIDS = OK
Hopefully something I can fix with my hammer. The car has 85.000 miles on the clock.
View 14 Replies
My 2008 f250 6.4l just got out of the shop a week a go new small block and new pistons, throwing #1 constrabution code,map sensor and #1 cil misfire you can hear air come out of the intake, I am guessing valve train or lifter..... other problem two days after the truck throwing the codes i went to take it to the shop and would barely drive floored struggle to go 10mph put it in park rev up normal will go in reverse normal just no power in drive, no transmission codes, had it towed to the diesel shop, mech said might be a fail safe on transmission from the engine codes? it has egr/dfp h&s mini maxx tuner, the truck has 170k on body 11k on new engine before the new block that was put in last week.
View 6 Replies
I have a 2008 f250 superduty with the v10. Just today I was driving and engine picked up.slight miss it's rainy. I thought coil pack, but it left me on side of road. Got fired limped home won't go more than 40mph. Runs rough, no power, checked codes and get P0340, p0357, p1336, and P2195.. Where to start.. My daily driver and have to get back on road.
View 1 Replies
While driving up hill at 60mph the truck lost power. Rpm jumped up as to change gears as it hit 55mph. Still losing power until it shut off. I tried to restart and just got a click from the solenoid. No engine codes whatsoever. Battery had 12.1 volts but when turning the key to start in getting 8 volts. Had it towed home. Today I swapped batteries with my other truck and same click noise from solenoid. All lights, radio, ect still work. Where should I start? Alternator, fuses...?? 2008 f250 5.4 ...
View 12 Replies
My 2011 F350 is shaking like a wet dog, all the time, loaded with a trailer and empty. It's the whole truck, not just the front end or rear end. It'll shake a Dr Pepper flat in 10 mins. No one can figure out why. Maybe y'all can think of something.
Here's what we've done
New tires, balanced
Alignment
Replaced ball joints and sway bar
Replaced carrier bearing
Replaced passenger front hub that got mysteriously locked and henceforth destroyed.
Replaced all 4 shocks
Where to look next?? Guess I should mention is 4x4 dually with 177,803 miles.
View 7 Replies
I have a 2010 F250 with a 5.4 gas. I wondered if a CAI would increase power and gas mileage. I have a friend who put one on his mustang and it worked a lot, especially with power.
View 7 Replies
2005 F-250, Diesel, 105K miles, all stock, fuel and oil filters changed in May, about 4000 miles ago.
three times in the last 4 days the truck has seemingly run out of fuel. Got a full tank about a week ago, at the same place I always go, so I doubt it is bad fuel. It ran thru a 1/4 tank with no problems.
4 days ago, it wouldn't start. It just didn't seem like it was getting fuel. It sat for several hours and then ran fine for about 15 minutes and then slowly died out. It wouldn't restart. It sat for 8 hours, and then started again, ran for about 15 minutes and I cut it off.
The next day, it started fine, I drove it 3 miles, cut it off, and an hour later it started but ran for only 10 -15 seconds and it slowly died out just like I was running out of fuel.
I started it this morning and it fired up right away. I let it idle in the driveway for 30 minutes, and it ran fine. I cut it off, went to start it 30 seconds later and it won't fire again.
The backyard mechanic I use for simple stuff wants to replace fuel filters and see what happens. BTW - twice when it wouldn't start, he hooked up his computer and it had no error codes. You can hear the fuel pump running when you turn the key on and the mechanic said he could feel the pump working when he put his hand on it.
Should I let him do that or is there something else we should be looking at?
View 7 Replies
1999 F250 V10 gas. I changed out the fuel pump, and now the gauge doesn't work. Checked all fuses - they're good. Is there any possibility that I could have accidentally pinned the float under the pickup sock, or got it hung somewhere? Is this a common occurrence? Don't really want to drop the tank again - but looks like I will have to in order to check/fix.....
View 3 Replies
2004.5 F250 SD XLT 4dr 6.0L
CAI, 4" Straight exhaust
EGR Delete, 6.4 Injector pump
Coolant filtration system.
New injectors al around
New ICP, New IPR, New Oil Cooler.
Recently Bulletproofed on ARP head studs, and the stock Head gasket,
New injector harness and FICM from DieselTech Ron
SCT tuner, running innovative diesel tunes. EGT Sensor
37x13.5r18 nitto trail grapplers
Truck started bucking and stalling when warm and over 60mph. No codes.
View 1 Replies
I'm close to pulling the trigger on a Crew cab F-250 Powerstroke, 156" wheelbase. Need to know about fuel tank capacity? Ford's website and manual are somewhat cryptic. I believe it's 26 gallons.
View 3 Replies
Seems recently my 2008 f250 diesel wants to go into 4wd all by itself. It's the electric switch on dash with the auto/lock front hubs. I'm thinking either the dash switch or the accuator motor. Where to start though... Also I can turn the switch to 4 wheel high and it doesn't go in.
View 1 Replies
