Ford 6.0L Power Stroke Diesel :: F350 - Speedo Won't Work When The Truck Goes Into Limp Mode
Oct 15, 2016
What the problem is with my F-350 6.0. I have an intermittent problem with my Speedo reading zero while I'm doing 70mph on the fwy. since the speedo won't work the truck goes into limp mode, the turbo will not function at optimum level. I have replaced the diff. sensor, the trani sensor, the a.b.s.sensors, the instrument cluster to a reman cluster. Then when I had a local mechanic plug a laptop dianostic program on it as he was running through the system inadvertently the radio cut out, so I found that who ever installed the after market stereo they cut a few wires to the harness, I went to the junk yard found the harness end and replaced the end. so with all that said and done no one knows what is causing this speedo not to work and limp mode. about 4 years ago the oil pump stopped working and ruined the turbo so the whole front end of that glorious 6.0 was rebuilt the problem started about a year after that.
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I was towing a fairly heavy trailer yesterday (around 10k) and laying into the throttle to gain some speed before a big hill when I completely lost power. It slowed me down to about 10 MPH.
I was able to drive home at very slow speeds and the only way to get over 10 MPH (only up to about 20MPH was to very lightly accelerate up to speed. Any hard acceleration and it cut me off to 10 MPH. No warning lights of any kind going off...
Truck has a Hypertech Max Energy programmer on stage 2.
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Just fully rebuilt transmissin 4r75 replaced all planet gears clutches etc. Now with it all back together the speedo does not work on truck goes into limp mode. I replaced the vss sensor an no luck
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I was driving to work and got about 15 kms from home and all of a sudden, the engine lost power and I coasted to a stop, with the engine running rough on 3 or 4 cylinders. No engine light on and I have a Scangauge II and all the gauge readings looked ok. the fuel pressure was 42, but the glycerine in the gauge froze solid in the winter and I didn't think it was right. I stopped the engine and looked for obvious problems like a failed o-ring on the fuel filter, any leaks and found none. tried the engine again and it ran perfect again, drove the remaining 40 kms to work with no problem. It happened again on the way home, no engine light, again, stopped on the side of the road, it would not restart, check the SG for codes and there was none. Then it started again and I drove home fine again.
I picked up a new gauge for the dash I had added, and checked the pressure, it was 48 and steady with the engine running, but I then changed the fuel filters and installed the blue spring kit to the filter housing I was waiting for warmer weather to install. Drove it to work again the next week, it ran perfect, fuel pressure steady at 60. Then I used it yesterday and it lost power again. I could not get it to run properly for quite a few attempted starts, the it was fine again and I drove it home.
I idled it and checked for codes again, none. ICP was 740, FMP was 54, SYC 1, Fuel Pressure 60. While it was idling, it did it again, idle slowed down and all the previous reading stayed the same, fuel delivery did go up though.
Previous work done. (Current Kms = 390000) 180000 kms, new injectors, turbo, EGR cooler, (EGR blocked off as well), ICP sensor and regulator, in dash Fuel Pressure and ICP gauges installed. FICM sent to Swampy's after alternator died and took out FICM and upgraded to 54v.
The SG when I try to clear the codes it says "Not Responding" with the key on or off, so I don't think it will read or clear them. Where to start? I am thinking wiring somewhere...
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I'm going to do a weld-in-plug delete in my RV in the next couple weeks, and its a crapshoot apparently if it'll throw a code. My immediate concern is I want to go on a trip right after, and I won't have time to fiddle about getting an SCT tuner to turn the code off. What I definitely don't want is a code for EGR flow restriction to eventually cause my motor to go into some kind of limp mode while I'm in the middle of a long drive. Is this possible?
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While exiting the interstate just now my 2011 f250 just went in to limp mode going up the ramp and cut off. I am sitting at the top of a very busy exit truck won't restart .
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What's the best tune for this motor? I have an hs mini max with the spe hot tune and has nothing but problems towing with with it. They swore up and down for a year I was the only one with issues for a year and then finally admitted it's not good for towing and lots of people had issues with it so they gave me their towing tune for free but it isn't very good either.
The hot tune is a little too hot and keeps going into limp mode when towing up hills even on the lowest stock setting, or really getting on the throttle on any setting not to mention way too high of boost for a stock turbo at 30-32 on every level . It makes sports cars look slow before hitting limp mode though.
Their tow tune fixed that problem but it's boost is too low at only 18-19 (had 24 running stock Ford programming) and it smokes like crazy, more smoke on higher settings without getting any faster or any more boost. It doesn't smoke much on the stock setting but clearly the other settings aren't very well tuned.
I want a tune that will tow 25k without issues and smoke(not literally) sports cars off the line at factory boost level s so it doesn't blow the turbo.
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My truck gave me low fuel pressure and reduced pressure limp mode at 21,000 miles. The fuel and air filters were changed at 16,000. The dealer said all they found was the fuel filters (at 21,000) were what needed to be changed. Also, why does my truck hum??
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I have a 2008 F350 with a 6.4 Powerstroke diesel engine that just experienced total engine failure. It has around 65K miles.
There is a heavy burn star pattern on all 8 pistons, a few pistons are cracked, a few cylinder walls are scored, glow plugs are melted, both heads are cracked with multiple stress fractures in each head.
About 1 month previously, the transmission would not work in tow mode and caused the engine to go into limp home mode. The dealership just replaced the entire tranny as a warranty item. About 1 week before the engine failure, I put in a 5.25 oz bottle of Lucas injector cleaner with a full tank of gas.
The Ford dealership is saying that the star pattern on all 8 pistons is due to high pressure fuel overspray and is evidence that I had a tuner on this engine and that the warranty is invalid. I did not have a tuner. What might have caused this engine failure?
Also, they only ripped down the top half of the motor, not the bottom half. I heard this might have been caused by a cracked crank shaft, but Ford refuses to investigate this possibility.
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I have a 2012 ford f350 SRW 4x4 with the 6.7L. Problem I have just started to have. When going downhill in tow haul the truck at first will hold you back then all of a sudden it starts to up shift at 20 mph it reaches 6th gear pretty quick. I talked to the dealer and they suggested I was pushing the shift buttons, but I am not. They told me to drive it till next week and then they will see if there are any codes in it.
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I am getting ready to go on vacation this weekend with my f350 and I was driving today when suddenly the truck shut down while going at about 25 mph. I tried to start it and it just kept cranking. I got it started 5 mins later and it threw a P0069 code. I drove for about 2 more miles and it shut down again, and started right back up. I'm guessing map sensor? This was the last thing I needed to happen!
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A little background, this is an 04, f-350. It sis not start a week ago so I charged the batteries and it started, started fine this morning, (had not driven it for the week) Drove it to work, 35 miles, parked it, and it will not start.
I downloaded Torque and got a few numbers,
HPOP 1900 FMP 48V (repaired last summer) and FVP 11.5V.
Ran out of battery to surf more and look, so I am trying to figure out the app, and the issue with the truck. It seems to turn over good, until I ran the battery down, and the GP cycles normally, and the injector buzz seems good. Temp is in the 50's...
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I've got a problem with an '05 f-350 with the 6.0. Initially I had a code for the #1 glow plug so I replaced the plug and the code was still there. Next I tested the harness and the rest of the plugs on the same harness and everything checked out fine. This lead me to the Gpcm which I then replaced. The first thing I noticed was when removing the old Gpcm I got a spark when removing the mounting nuts.
When I installed the new Gpcm the truck started fine and no codes came up so I thought all was good till I went to start the truck the next day and the batteries were dead. I thought I possibly left something on so i started charging the batteries but noticed they seemed to have a draw on them. I put my hand on the new Gpcm and it was very warm with the key off so I have the batteries disconnected till I can figure this out.
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So I'm having a problem with my truck revving up out of no where. Happens more when I'm driving. It only shoots up a little bit but sometimes goes up 1000 more rmps. Happens for a quick second then stops and does it again. I've had the ckp replaced and it has an egr delete. Other than that it's stock. I got home and let it idle for a minute. The rpms fluttered up and down in small increments and almost stalled out. What is causing this?
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I have a 2004 Ford F350 6.0. It is leaking diesel from the front of the engine to the ground. I have a video of this and pictures as well but I'm not sure what I'm looking at. What I can do??Puddle after about 20 min of running.
Dripping from here, left of hose....
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I have a 2004 F350 with 6.0. My problem is the 4x4 will not engage from inside the truck. I have to get out and twist each hub to lock in the 4 wheel drive. If I rev the engine with high rpms the front will lock in with a big jerk. It use to lock in just by turning switch. What is the best way to fix it?
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2004 f350 after i shut the truck off something was buzzing. So I popped the hood and found its the injector harness or injectors.Is this normal or something I need to look into?
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Yesterday I noticed when I parked my truck the Speedo was reading 10 mph. I drove around a bit and used my GPS to get my real speed which was 10 under what the Speedo read. I parked the truck for the night and in the morning nothing had changed, I drove for a bit and all the sudden the Speedo worked like normal.
Later that say the Speedo got stuck at 50 mph and now when I stop it reads anywhere between 50 to 60 mph and goes up from there. When I'm doing 30 mph it'll read 80 to 90 mph. Cruising on the highway it reads well over 100 mph.
I've done some reading and it seems like it either the cluster or a speed sensor. My cluster has had a lot of problems lately of not working at all, no gauges work, radio turns off and the Windows don't work but a good slap on the dash will fix that most of the time.
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The other day, I started having problems with the truck not starting when at operating temp. Went for a drive and stopped a a scenic overlook, and spent about 30 minutes taking pictures. Went back to the truck, and it wouldn't start. Outside temp was about 95 degrees.
I tried for about half an hour to start it, but all it would do is turn over. There was a work crew there with their heavy machinery, and I was able to borrow their starting fluid. One quick squirt into the intake, and it fired right up.
Although I do have an oil leak from the right valve cover, when I checked the oil, it was just off the full mark. The truck was parked on a slight angle with the driver side being about a foot higher than the passenger side.
2003 F350 w/6.0, 180,000 miles
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04 f350 drw 2x4 ... I know this is a weird question, but i put 4 new tires on the rear of my truck and developed what i can describe as "loose body" symptoms. Most noticeable in going down the highway it feels like the rear of the truck sways and its hard to control and keep straight at times. Check tire pressures n front and rear suspension for broken springs or loose joints. Nothing looks broken or out of place. Prior to replacement truck drove straight n all was good. Also noticed steering wheel is now off center.
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While driving the other day, the truck suddenly began to stall when pressing the accelerator. The water in fuel light came on as did the glow plug light. This continued with the truck sometimes dying all the way and other times just stalling then picking back up. No difference in throttle pressure seemed to make a difference except that letting off totally then slowly pressing seemed to let it keep running sometimes.
So I get home and drain the fuel water separator. I gets about a thimble full of water and lots of the rusty looking junk others have talked about. Try to run the truck again, same thing as before. I then changed fuel filters and thought that had it licked but after about 10 minutes it started again. By the way, the 6mm plug seemed to have about a third of the threads rusted off. Not sure what that means as I drain it at least twice a year.
I have read a lot about the ICP and IPR issues and was wondering if this could be my problem. I am hoping its not the HPOP. My other thought was something in the fuel tank blocking the in tank filter. I checked the top mount bowl and it was only about two thirds full after running the truck
Truck info: Late 2004 Ford F350 Dually 4x4 crewcab, 6.0, EGR delete plate,4" turbo back exhaust with cat delete, no muffler,K&N filter and filter box, Diablo tuner usually set to 60hp upgrade.
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