Ford Super Duty (1999-2016) :: 2003 F350 - Low Power / Screech From Turbo On Acceleration And Declaration
Jul 17, 2014
2003 6.0 F350... Under full throttle from take off goes about 20 mph just revs at 2500 let off the throttle in feather it shifts and acts like it wants to go just not allot of power sometimes. In neutral won't rev past 2700 rpms I do hear a screech from the turbo on acceleration and declaration. Also if in tow haul the truck won't shift at all. I can get it up to speed but even the smallest incline drops to 50 mph then takes bout 2 miles to get it back up to 65 mph or if I go downhill.... turbo makes the noise the whole time sometimes goes into passing gear in have to let off in it kinda my the truck hop in this is at 60 +mph. Only thing I have really tired was fuel filters and checked at plugs and boots.
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2003 F350 5.4, 4R100 trans.... I've had this truck parked for a few years but want to get it into service for farm use.
In park or neutral, it revs great, idles a bit rough but not terrible. But in drive under load it I can't get it above 1500rpm most times unless going downhill, and then it shifts very late, and I have to get it up to 3500rpm and then let the throttle off to get it to shift. It does better in 4Lo with shifting, but it's still very sluggish.
Now it says to check fluid level in Park at idle. When I do this, I just get fluid on one side of the dipstick, not a full dip as you'd see on an oil dipstick. And the wet on the fluid goes up past the hash marks quite a bit. I'm use to seeing the dipstick get oil all the way across, and then a bit higher just up the edges, but have always read it at the full cover point.
I suspect low fluid, but I'm not really sure with the way the stick reads. I was thinking of draining it all and then filling to spec as per: [URL] .... but have a long drive to go get MerconV.
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Truck sat for 1 1/2 years. Changed filter and put in 15 gallons of fuel. Had maybe 1/2 gallon old fuel in tank. MAYBE. Fixed fuel line because it wasnt getting fuel and it fired right up and idles great.
Truck has no acceleration over 2500 (or so) RPMs but idles fine. This is depending on how hard you push the pedal of course.
If you drive the truck normally like a grandmother it seems to be ok. As long as you dont need a passing gear or need to accelerate more than 1/4 pedal
If you try to push the pedal to get the next higher gear it will sometimes hit the gear fine. IF you floor the truck it will totally lose acceleration. Then the truck will run like crap even slow for a good while. But then it will clear up for the low end. Then you can drive it normally. Then when I think I can test the upper end I get the same thing again.
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6.7 Boost ... Under full acceleration does the turbo go to 40 PSI or stay in the middle at 20?
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Bought a 08 F350 with the 6.4 Liter, with 80k mikes on it. Was traveling up an incline. Both Turbo's were engaged, when suddenly I lost boost, and PSI dropped all the way down. They barely create any pressure now. Checked intake, also checked boots too inter cooler. All seem fine. After driving it for about five minutes at low PSI, a check engine light came on. It was a sudden loss of power.
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2006 F350 6.0l dually. Head gasket replaced, racing studs installed, other assoc components replaced few years ago. Y pipes replaced two years ago.
3 weeks ago had oil change and service. Last week engine started making roaring sound. Hubby raised hoid and discovered coolant fill tank cap off ( sitting on battery). Shop owner came to our home and filled with coolant, about 3 gal in. We drive from Houston to Lubbock then Dallas this week. Added about another gal coolant.
Hubby thought he heard an air sound yesterday, but was slight. Today after driving for about an hour at hwy speed, after we slowed for an exit, when throttle depressed again, air noise very loud and turbo weak. Limping home.
Have had some of the flexible hoses replaced in the last year or so as well.
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This is and 6.0L 04 135000 miles. I was pulling a load up a hill when the turbo back fired this was no fart hose blew off at bottom of rad, hose clamp was gone. I reattached hose but now I have lost some power and getting poor fuel mileage. I think turbo is making a howling noise at higher rpms I pressure tested the system does not seem to be any leaks, I'm assuming there something wrong with the turbo, but is it possible the hose clamp was sucked into the rad?
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2003 F350 6.0L ... 171,000 miles ... 5,100 since oil change 15W-30 at the shop ...
I was driving on the interstate (50 miles of driving) struggling to maintain 70-75 mph at 2,200RPMs. I would accelerate and RPMs would go up to 3,000 but no speed. Before I could pull off speed slowed to 50 before dying. Sat on the side of the road 30 minutes before I could get it started. Had to give it gas. No misfires just quietly started. Couldn't go over 30 mph. Towed it to my destination 135 miles.
Volts on 7Pin FICM read fine.
Checked the fuel fulters. Air Filter. Tank for debris. Nothing.
My coolant reservoir was lose and I noticed a lot of coolant in the driverside front wheel well and down the left side of the undertruck. Reattached after checking FICM. Hope that was all it was cause I couldn't find any leaks.
I had Planned to have the oil changed before the return trip before this all happened. New to Diesel engines but I like a challenge. Where do I go next?
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I have a 03 f 350 6.0. My 4x4 wont engage. I checked my fuses all are good except 31 no power. Is this the culprit?. I get power at the 6pin pig tail on shift motor, but the 2pin pig tail doesn't get any power at all. I pulled shift motor off manually put power on it and it works. I also replaced both 30amp relays under hood...
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2007 F-350 4X4 King Ranch... I have the 6.0 diesel. I am on the road to Houston, Tilden and San Antonio TX, and I am noticing a whistle on acceleration. I can change the tone by how hard I push down on the accelerator. I thought it was a radio issue and turned the radio off and got no change. Turned the a/c off, no change. Down hill or coasting, nothing.
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2015 F-350 diesel purchased in Sept 2014. When moving slowly such as turning a corner and I have to let up on the accelerator momentarily, when I press down again there is nothing for an unsettling period of time, maybe 2 seconds, as though the engine died, but it didn't and it always comes back. Is there a firmware programming update for this?
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My 2006 F350 is giving me grey hairs. I'm trying to figure out what's going on with it. I have been getting an occasional (more often than not) grinding noise from what seems to be the front of my truck. It will do it from a stop, under light, moderate, or heavy acceleration. Doesn't matter. If I let off the throttle momentarily it will stop until it shifts and will grind again through all shift points it seems.
Logic says it's got to be the wheel bearings or locking hubs. I recently did both on both sides to no relief. Because this is an 06 it had a different hub set up then the previous years which I've read a lot of info about (needle bearings). It doesn't make a lick of difference if hubs are locked or on auto. If in 4x4 (ESOF) or 2wd.
As mentioned I replaced both wheel bearings with FORD parts and both locking hubs From FORD as well. (Small fortune). Axle u joints seemed tight. Greased me up but no play.
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I have a 2000 F350 7.3 2wd Dually - that only only produces cold air conditioing on hard acceleration only stays on for a few minutes then falls away.
The temperature is cold when its going. I've checked the levels and its gased OK. There is no voltage to the clutch on the compressor when it is not working. So I take it, that it isn't the clutch shim/spacing.
If I accelerate hard it comes back immediately. Whether I am going slow at 1500rpm or doing 70mph at 2500rpm - Uphill or downhill. Its seems to need a substantial amount of Turbo boost for just a few seconds to turn on.
I actually bled the system a little and its made it worse. Stays on for a shorter time and isn't as cold. However the low pressure side is still on the high side at 50psi when running.
Its done this for approx 2 years and its getting worse.. And now its really hot outside.
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I have an 06' f350 6Ltr. Over 300 k. Good shape, i have owned it for about a year. My first diesel. Last week it wouldnt start, had a 1/4 tank. Read about problems with other trucks with a broken pick up on fuel pump. So i filled the tank and it started. Next morning used command start and it ran for 1 minute then shutdown. took about 5 minutes of manually turning it over and it fires up ran all day. Does this almost everyday since and now shuts down while driving after hard acceleration and surges under acceleration when on incline or underload. Changed fuel relay, fuel filters. Researched and asked around but getting mixed opinions. I am mechanically inclined but this is a little beyond my scope of trouble shooting and id rather not start throwing parts at it.
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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....
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Just bought a watchdog monitor by Bullydog. What are the normal levels for Boost, MAF, Load for a SD Twin Turbo 6.0L?
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2003 6.0 is acting crazy again. Has new ICP, IPR, oil discharge tube, and hpop. It cranks right up but one time you crank it and all the gauges work correctly, especially the fuel gauge. The engine will idle perfect but when you accelerate it has a dead miss. May crank like that 2 to 4 times. Then you crank it and it runs like crap, and the gauges won't work, the fuel gauge goes past E and the light comes on. As long as that happens it runs terrible, but when the gauges are working it idles great but has a miss under acceleration! It was running fine, then just went nuts!
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I have a 2003 Ford F-350 6.0 it's srw lariat edition it has Manual hubs but electronic 4x4 switch I have changed all fuses and relays but still the light won't come on I've tried manually locking the hubs and still nothing....
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I've got a 2003 F350 CCSB SRW V10 Auto 4X4 3.73 LS diff. The tranny doesn't always go into overdrive when I get about 40 or 50, even 60. I went down the freeway the other day at 65 in 3rd turning about 2500 rpms. Am I hurting anything here? One thing I have noticed is the overdrive light on the shifter does not work. Light doesn't come on. Leads me to believe that there is a frayed wire in the steering column. Could that cause the tranny to act funny? The cruise control works, so I'm thinking the speed sensor on the diff is ok, but I could be wrong.
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I found these on my buddies truck, its on the frame rail on both sides. I have the connectors and lights to install but there is no power at the harness. Is this something the dealer has to "reflash" in the pcm to make these light up? I assume they should operate while unlocking the doors or opening, ign. on or off.
YouTube.....
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2003 f350 sd 2wd 5.4 auto cab chasis 40 gal rear tank (home depot truck//for real)
Wouldn't start/towed home/ran until it was parked ...
Bad fuel pump//replaced//new fuel filter ...
Starts but won't idle//will run if feathering throttle...
Code's po443/po1451/po1747/po755/po743 never had these codes before
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