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V8-7.3L Turbo Diesel

If your radiator is leaking then it needs to be replaced. Hopefully the engine never got too hot when this loss of coolant occurred. Once the radiator is replaced I would typically do a cooling system pressure test to make...

You must have a fuel line that is leaking. Diesel engines have very high fuel pressure. With the age of your vehicle it is very possible that you have a fuel line that has rusted through. This is a pretty...

Although I'm not there to inspect your Ford Super Duty, it would seem logical to inspect your Electronic Brake Control Module (EBCM) (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-electronic-brake-control-module-ebcm). This component reads all of the braking system’s sensors and activates the ABS or traction control system...

Hi Blake. Thanks for sending in your question. Quite often, reduced acceleration with a turbo diesel is caused by excessive carbon build-up in the throttle body, the fuel injectors or even the glow plugs being worn out. Usually, the best...

You may have two different problems or the a/c control switch went bad. The blower since it has power then the blower resistor or blower switch may be bad. For the compressor not coming on you would need to have...

Hi there. Either the wiring to the TPS (https://www.yourmechanic.com/services/throttle-position-sensor-replacement) - throttle position sensors - has a broken or loose contact and is not making the sensor register properly or the sensor that was installed could be the wrong design and...

Diagnosing smoking issues on a Turbo Diesel is really difficult to do remotely. However, if it's white smoke that is coming out upon early start up, it's commonly due to an over rich situation with a turbo, or in worse...

The most common cause of random stalling on this vehicle is a failure in the camshaft position sensor or in the connection at the sensor. This causes the computer to lose the signal and stall. If there are other electrical...

The 5.9L diesel is a straight six engine. The 6.6L diesel and the 7.3L diesel are both V8 engines. If find that there are more maintenance when it comes to the V-configured engines to the straight six engines. I have...

Hi - for your "no movement problem (https://www.yourmechanic.com/question/car-will-go-into-gear-but-doesn-t-move)" I would first check fuses for the transmission and 4WD controller. Then check the electrical wiring connections both to the transmission and to the 4WD controller. Perhaps the vibration of the railroad...

The adjustable pedal mechanism sensor may be defective, require replacement, and have the codes cleared. Ford had a bulletin that covered this problem in 2005, and offered a free replacement of this sensor. This bulletin is no longer active, but...

Hi there. First check to see if the cruise control fuse is blown. Then check the brake light switch (https://www.yourmechanic.com/services/brake-light-switch-replacement), the brake pressure switch, the speed sensor on the transmission (https://www.yourmechanic.com/services/speed-sensor-replacement), or the cruise control buttons. Most of the time...

Hi Ian. Thanks for contacting us today. I might be mistaken, but I believe the fuel pump relay is located behind the radio of the vehicle, near the primary fuse panel on the F-350 Super Duty. To locate and remove...

I looked up the two applications. The two transmissions are different and, in particular, the transmission control module and PCM and the wiring harness on your 1999 truck are not compatible with the controls on the 1990 transmission. If you...

The problem is in your charging/starting system. Most likely, you just have bad batteries (since your truck uses two). A professional, such as one from YourMechanic, can diagnose and repair your starting problem (https://www.yourmechanic.com/services/car-is-not-starting-inspection) as needed.

Hi there. Looking at the OBD-II trouble codes you provided us and your symptoms, it appears you have a torque converter solenoid or torque converter issue that is causing the sluggish driving and check engine light. The Powertrain Control Module...

Hello - your symptoms suggest the clutch hydraulics (https://www.yourmechanic.com/article/how-a-hydraulic-clutch-system-works) or mechanical linkage components have failed completely. The OEM clutch line includes a "quick-connect" fitting that may have come loose or failed, given the recent maintenance. Checking the fluid level, and...

The vehicle is not equipped with an fuel pump inertia switch. Your vehicle uses fuel cutoff solenoid on engine only.

Hi there. Check the neutral safety switch and the shifter circuitry. It is possible to have a short in the wiring causing the starter to engage while shifting gears. Look for any wires that may be shorting out with the...

For some reason Ford used three different evaporator case designs in the trucks this year. The filter will be in one of these three locations. Look behind the glove box and there is a cover on case and filter is...