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V8-6.4L Turbo Diesel

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Question
Car blows white smoke
Hi there. White smoke can come from the exhaust on this truck for a number of reasons. The most common cause is a failing fuel injector that is allowing excessive amounts of fuel to enter the engine. It can also...
Question
Fuel rail pressure is all over the place and the truck bucks badley going down the road. Only code that comes up is P215a.
The fuel pressure will fluctuate when the motor is bucking. The trick is knowing if the engine is bucking because of fuel pressure, or is the fuel pressure erratic because of the engine bucking. Usually it has nothing to do...
Question
Truck starts then immediately dies
Hello, thanks for writing in. Most of the time this is caused by a fuel system issue. I would usually start by installing a scan tool to see if there are any codes in the computer pertaining to this problem....
Question
How long and what is the process to replace a fuel pressure sensor?
A professional mechanic would require roughly 5 hours. (If just the regulator is replaced that takes about 1 hour). Some parts, as noted below, cannot be re-used, you need a precision inch pound torque wrench, FSM instructions (and TSB updates...
Question
Instrument cluster shuts off intermittently while driving
There are two fuse boxes on the vehicle. One is inside of the firewall usually located in or around the dashboard. Have you checked this fuse box and the fuse box in the engine compartment? The dash cluster itself may...
Question
p0303 misfire and p0269 balance fault
Hello, From my experience this means that the fuel injector for cylinder #3 is faulty,has dirt in it,damaged wiring,a loose connection or corrosion in the connector. It sounds like the moisture from the car wash is effecting the fuel injector...
Question
Check coolant
This vehicle has two separate coolant reservoirs in most cases. One of them is for the engine's cooling system, and the other one should be smaller and is for the turbo. The coolant level can be verified by checking the...
Question
Truck has a wrench light and won't clean exhaust filter
Hello. If the wrench light is coming on, then there is an issue that the computer is seeing. Some generic scan tools cannot read the correct codes in the computer. I use a Ford scan tool on this. It sounds...
Question
Wrench light came on truck has no power and the rpms constantly get higher if put in park
Hi there: The wrench light is service light indicator that alerts the driver that maintenance or service is due for a component. Most of the time, scan that Auto Zone will complete uses a basic scan tool, which does not...
Question
powertrain malfunction/reduced poer/electronic throttle control
If the "limp home" set due to a fault in a computer controlled throttle body, there is "generally" no way to bypass it because this is a category of "hard fault", that is a fault that simply has to be...
Question
RPM goes up and down
The very first thing to do when you experience power loss or surging issues, or interesting gauge readings, is have your vehicle scanned for diagnostic troubleshooting codes. Your car can set these codes and not always illuminate the Check Engine...
Question
im having the code p0088 and i need help
Hello. P0088 is the trouble code for "Fuel Rail/System Pressure - Too High." If the computer detects that the fuel system pressure is too high it will set off the check engine light to notify the driver of this issue....
Question
Noise in the front end while turning the steering wheel
This is a common sound when the ball joints begin to wear out. As the ball joints are subjected to various loads and pressure depending on the weight of the vehicle and force/torque of each turn, this squeaking may vary...
Question
Truck wont start. Cranks but no start.
Hi there: The P-2291 OBD-II trouble code is only found on diesel powered vehicles. It indicates that the injector control pressure for the high pressure oil has fallen below the threshold of acceptance set by the manufacturer during the cranking...
Question
Wrench symbol shows on dash after cranking the engine. Now the wrench symbol stays on.
Hi there. When the wrench light comes on, this is the symbol used by the computer to alert the driver that there is a problem with the engine or transmission and puts the vehicle into limp mode. You would need...

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