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.
When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.
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.
When diagnosing the non-functioning cruise control in a 1999 Ford Ranger, it's crucial to follow a structured diagnostic approach that emphasizes simpler solutions before tackling more complex problems. Start by checking the fuse related to the cruise control system, as a blown fuse is a common issue that can be easily fixed. Next, inspect the cruise control buttons on the steering wheel to ensure they are working properly, since faulty buttons can prevent the system from engaging. After that, verify the functionality of the speed sensor, as a malfunctioning sensor can disrupt the cruise control's operation. Additionally, examine the vacuum lines for any leaks or damage, which are particularly important in older vehicles like the Ranger. Using an OBD-II scanner to check for error codes can also provide valuable information about potential issues. Finally, consulting the vehicle manual can offer specific troubleshooting steps and diagrams that are relevant to your model. By systematically following these steps, you can effectively diagnose and resolve the cruise control issue in your Ford Ranger.
When the cruise control in your 1999 Ford Ranger ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a failed control module, sensor, or switch, which can disrupt the system's operation. Additionally, throttle actuation problems may prevent the cruise control from maintaining speed, while a blown fuse can cut power to the system entirely. It's also essential to check the brake pedal switch, as a defective switch can signal that the brakes are engaged, disabling cruise control. Another issue to consider is the presence of corrosion, often referred to as "green crud," on the contact tracks and pins of the cruise control switches, which can impede electrical connections. Lastly, brake pressure-related problems can also affect the functionality of the cruise control. By systematically inspecting these components, you can identify the root cause of the issue and take the necessary steps to restore your cruise control system.
Addressing a non-functioning cruise control in a 1999 Ford Ranger is important, even if it may not seem like an immediate emergency. While the absence of this feature does not directly compromise safety, it can lead to a less enjoyable driving experience, especially on long trips where maintaining a constant speed is beneficial. Ignoring the problem could result in more significant issues down the line, as the underlying cause of the malfunction may worsen, leading to more extensive and costly repairs. For DIY enthusiasts, it’s advisable to conduct a thorough inspection of the cruise control system, checking for common issues such as blown fuses, faulty switches, or vacuum leaks. By addressing these problems promptly, you not only restore the convenience of cruise control but also ensure that your vehicle remains in optimal condition, preventing further complications that could arise from neglect.
See what others are asking about their Ford Ranger. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Ford Ranger drivers like you.