Bigrednightmare
New member
- Joined
- Jul 16, 2014
- Messages
- 106
I am in need of some help/suggestions. I have a truck that has recently came into my shop that 2 other shops have tried to figure out and were not successful. A little background on the truck...
Its a 2005 F250.
with a 6.0 (obviously)
At the first shop the truck had a used engine put it in, the engine was out of a 2003 excursion. Everything went all fine and dandy and the truck ran perfectly fine. 3 months later the owner of the truck was driving down the interstate and the truck died and had it towed to the original shop. They found the reason behind the truck dying was due to gasoline in the fuel tank. They then drained the fuel out of the tank and flushed it and all the lines, and replaced all the filters. Truck was started back up and had a misfire and showed to have a few bad injectors, So the shop just went ahead and replaced all 8 injectors. The truck then was started back up and ran around for awhile and still had a slight misfire to it and it showed 4 injectors still being bad. So 4 more were once again replaced. Then the truck was started and driven and all seemed to be good....until the truck got warmed up, once warm the truck began to miss and surge above 2000 rpm. So it was diagnosed and the ICP and IPR were replaced but did not fix the issue. Then the HPOP was thought to be the problem so it was replaced....did not fix it......Then the shop performed a compression test and found 1 cylinder to be 15psi less than the rest, so they pulled the heads and had them tested and found one exhaust valve to be slightly leaking, head got a valve job and was put back together with studs and oe gaskets, egr delete, updated oil cooler, and a sct tuner. Truck was put back together and once again same issue, once warm it missed and surged above 2000 rpm. So then the shop thought it could be in the lift pump from gas being ran though it and replaced the lift pump, still same problem after wards. Shop then tried another ICP, IPR, ECM, FICM, Engine wiring harness, and Injector wiring harness, and afterwards still the same issue. Then they thought the problem maybe in the transmission so the trans was pulled and rebuilt with a new torque converter, still did not fix the problem. This is the point where this shop had finally given up.
One to the next shop (diesel injection), once there they pulled all injectors and cleaned them then they were put on the stand to test them, and they all tested fine. They pulled the stand pipes and checked them and they were also fine. The tried reflashing the FICM and ECM again, they also tried replacing the ICP and IPR (which would make the 3rd time)., as well as trying new ipr and icp pigtails. Still did not fix the problem. This is the point where the second shop called it quits.
And now I have the truck...
I have not drove into the truck much at all, all I have done so far was hooked up a scanner and checked a few things out. A few things have caught my eye so far...
The MAF voltage and airflow (G/S) did not move at all, come to find out after popping the hood, from the factory it did not have one (connector was there but it had a "dummy" plug plugged into it and the intake did not have a hole for the sensor). I had an intake laying around that has the MAF in it so I tried to install it and plug it in, It did not change anything still has a miss/sure above 2000rpm when warm.
The other thing I noticed while having the scanner hooked up was it looked like the ICP voltage jump around a good ammount whille steadily holding the pedal at 2000 rpm. I have not tried to dig any further into that yet.
Everything else data wise looks perfect.
So quick recap truck runs very well. Truck starts perfectly cold or warmed up. There is no loss in power and cylinder contribution looks perfect. But once the truck gets to operating temperature the truck will have a miss above 2000 rpm with or with a load on it. But even with the miss above 2000 you can push the skinny pedal and it will power through it and run perfectly fine and have plenty of power. This problem did not arise until after the truck died and the original shop found it to be full of gasoline.
All data (ICP,IPR,etc) look to be textbook perfect. Pretty much everything imaginable has already been replace once if not 2 or 3 times.
So if anyone has any suggestions/thoughts/ideas feel free to let me know..Im just thinking that maybe there is something small and simple that everyone is overlooking...but its highly unlikely that there has been 2 reputable shops that have looked at the truck and neither one so far has came up with a solution. Im just know that I dont want to get overly involved in this truck and get money tied up that I will not get back because it didnt fix it.
I know its a long post sorry, but I figured for something like this as much info as possible might give someone a clue or be useful in pointing me into the right direction on where to even begin.
Its a 2005 F250.
with a 6.0 (obviously)
At the first shop the truck had a used engine put it in, the engine was out of a 2003 excursion. Everything went all fine and dandy and the truck ran perfectly fine. 3 months later the owner of the truck was driving down the interstate and the truck died and had it towed to the original shop. They found the reason behind the truck dying was due to gasoline in the fuel tank. They then drained the fuel out of the tank and flushed it and all the lines, and replaced all the filters. Truck was started back up and had a misfire and showed to have a few bad injectors, So the shop just went ahead and replaced all 8 injectors. The truck then was started back up and ran around for awhile and still had a slight misfire to it and it showed 4 injectors still being bad. So 4 more were once again replaced. Then the truck was started and driven and all seemed to be good....until the truck got warmed up, once warm the truck began to miss and surge above 2000 rpm. So it was diagnosed and the ICP and IPR were replaced but did not fix the issue. Then the HPOP was thought to be the problem so it was replaced....did not fix it......Then the shop performed a compression test and found 1 cylinder to be 15psi less than the rest, so they pulled the heads and had them tested and found one exhaust valve to be slightly leaking, head got a valve job and was put back together with studs and oe gaskets, egr delete, updated oil cooler, and a sct tuner. Truck was put back together and once again same issue, once warm it missed and surged above 2000 rpm. So then the shop thought it could be in the lift pump from gas being ran though it and replaced the lift pump, still same problem after wards. Shop then tried another ICP, IPR, ECM, FICM, Engine wiring harness, and Injector wiring harness, and afterwards still the same issue. Then they thought the problem maybe in the transmission so the trans was pulled and rebuilt with a new torque converter, still did not fix the problem. This is the point where this shop had finally given up.
One to the next shop (diesel injection), once there they pulled all injectors and cleaned them then they were put on the stand to test them, and they all tested fine. They pulled the stand pipes and checked them and they were also fine. The tried reflashing the FICM and ECM again, they also tried replacing the ICP and IPR (which would make the 3rd time)., as well as trying new ipr and icp pigtails. Still did not fix the problem. This is the point where the second shop called it quits.
And now I have the truck...
I have not drove into the truck much at all, all I have done so far was hooked up a scanner and checked a few things out. A few things have caught my eye so far...
The MAF voltage and airflow (G/S) did not move at all, come to find out after popping the hood, from the factory it did not have one (connector was there but it had a "dummy" plug plugged into it and the intake did not have a hole for the sensor). I had an intake laying around that has the MAF in it so I tried to install it and plug it in, It did not change anything still has a miss/sure above 2000rpm when warm.
The other thing I noticed while having the scanner hooked up was it looked like the ICP voltage jump around a good ammount whille steadily holding the pedal at 2000 rpm. I have not tried to dig any further into that yet.
Everything else data wise looks perfect.
So quick recap truck runs very well. Truck starts perfectly cold or warmed up. There is no loss in power and cylinder contribution looks perfect. But once the truck gets to operating temperature the truck will have a miss above 2000 rpm with or with a load on it. But even with the miss above 2000 you can push the skinny pedal and it will power through it and run perfectly fine and have plenty of power. This problem did not arise until after the truck died and the original shop found it to be full of gasoline.
All data (ICP,IPR,etc) look to be textbook perfect. Pretty much everything imaginable has already been replace once if not 2 or 3 times.
So if anyone has any suggestions/thoughts/ideas feel free to let me know..Im just thinking that maybe there is something small and simple that everyone is overlooking...but its highly unlikely that there has been 2 reputable shops that have looked at the truck and neither one so far has came up with a solution. Im just know that I dont want to get overly involved in this truck and get money tied up that I will not get back because it didnt fix it.
I know its a long post sorry, but I figured for something like this as much info as possible might give someone a clue or be useful in pointing me into the right direction on where to even begin.
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