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V8-6.4L Turbo Diesel

The very first thing to do when you experience power loss or surging issues (https://www.yourmechanic.com/services/engine-idle-speed-is-high-inspection), or interesting gauge readings, is have your vehicle scanned for diagnostic troubleshooting codes (https://www.yourmechanic.com/article/how-to-read-and-understand-check-engine-light-codes-by-jason-unrau). Your car can set these codes and not always illuminate the...

The codes do not necessarily mean the glow plugs themselves are faulty. And, in any event, glow plugs are easily tested and should be tested prior to replacement so you don't inadvertently replace good parts. Other causes of the codes...

The problem sounds like you have a water pump leaking and it can be verified by doing a cooling system pressure test and then locate the leak to see if it is a water pump or the system hoses or...

The cloud of smoke is the engine running colder than normal or having too much fuel in the engine. Check the fuel injection system and see if the fuel injectors are firing correctly. If the fuel system is working properly,...

Hi there. Check the turbo and make sure that its functioning correctly and you have good boost. If the turbo is working properly, then there may be a plugged catalytic converter on the exhaust system making the engine overheat. This...

Hello. I am not sure why they put Dexcool into your cooling system. Your truck requires the specific Ford coolant due to the design of the engine. There really is no reason why Dexcool should have been used, and if...

Hi there - unfortunately, this warning (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-the-reduced-power-light-on) can be caused by countless engine or transmission problems. Check for problems codes which cause this indication. Quite often, this message is a protection for the transmission in particular to prevent damage. I...

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...

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...

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...

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...

Your best indication of the efficiency, and condition, of the cooling system is the engine operating temperature. If the operating temperature is in the "normal" range for your engine, then you need not worry. As far as the generation of...

Hi there. The process for replacing the windshield washer fluid reservoir is very simple. You might want to review this page to see how we complete this process (https://www.yourmechanic.com/services/windshield-washer-reservoir-replacement) or search online for step-by-step procedures for this job. If you...

Hi there. Sounds like the engine gas recirculation valve (EGR) is coming on when the engine is at an idle. Check the EGR and see if its plugged in and working. If so, then remove the EGR valve and clean...

Hello - the fuel pressure regulator (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-pressure-regulator) is located directly behind the thermostat housing (radiator hose attachment end). There is an upgrade kit for this component to raise fuel pressure (Ford#3C3Z-9T517-AG IH #1843065C98). If you need assistance, I would recommend...

The fuel filters should of been filled before installation. You will need to bleed out all the air from the fuel system to get the vehicle to start. In the future you will need to fill filters before installation. This...

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...

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...

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...

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....