1999 Ford F-350 Super Duty Cruise Control Isn't Working

Fixing Cruise Control Issues in 1999 Ford F-350 Super Duty

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 1999 Ford F-350 Super Duty cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 1999 Ford F-350 Super Duty cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 1999 Ford F-350 Super Duty?

When troubleshooting the non-functioning cruise control in a 1999 Ford F-350 Super Duty, it's essential to adopt a systematic diagnostic approach that begins with the simplest solutions before progressing to more complex issues. Start by checking the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable problem. Next, inspect the wiring for any visible damage or loose connections, as faulty wiring can disrupt the system's functionality. Testing the cruise control buttons on the steering wheel is also crucial, as malfunctioning buttons can prevent the system from engaging. Given the age of the vehicle, it's important to check the vacuum lines for any leaks or damage, as these can significantly impact the cruise control's operation. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the system. Finally, inspect the cruise control module for signs of damage or corrosion, as a faulty module may be the root cause of the problem. By following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your Ford F-350, ensuring a smoother driving experience.

What are the common problems that could cause the cruise control to stop working in a 1999 Ford F-350 Super Duty?

When troubleshooting the cruise control system in a 1999 Ford F-350 Super Duty, it's essential to consider several common problems that could be at play. One of the first areas to check is the brake pedal switch, as a faulty switch can prevent the cruise control from engaging, since it is designed to deactivate when the brake is pressed. Additionally, the speed sensor plays a crucial role in maintaining a constant speed; if it is defective, the cruise control may fail to function properly. Another potential issue is a blown fuse, which can completely disable the cruise control system, making it necessary to inspect and replace any blown fuses. Furthermore, vacuum leaks within the cruise control system can significantly impact its performance, so examining the vacuum lines for any signs of leaks is advisable. Lastly, if all else fails, the cruise control module itself may be malfunctioning, and replacing it could restore functionality. By systematically addressing these common issues, you can effectively troubleshoot and potentially resolve the cruise control problems in your Ford F-350 Super Duty.

How urgent is it to repair the non-functioning cruise control on a 1999 Ford F-350 Super Duty?

Repairing the non-functioning cruise control on a 1999 Ford F-350 Super Duty should be prioritized due to its implications for safety, convenience, and fuel efficiency. A malfunctioning cruise control system can lead to erratic speed changes, increasing the risk of accidents, especially on long drives or highways where maintaining a steady speed is crucial. Additionally, without cruise control, drivers may experience increased fatigue during extended trips, as they must constantly manage the accelerator pedal. This can detract from the overall driving experience and lead to discomfort. Furthermore, a properly functioning cruise control system can enhance fuel efficiency by maintaining a consistent speed, which is often more economical than fluctuating speeds caused by manual driving. Therefore, while it may not be an immediate emergency, addressing the cruise control issue promptly is advisable to ensure a safer, more comfortable, and cost-effective driving experience.

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