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.
A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.
To effectively diagnose the non-functioning cruise control in your 1999 Dodge Caravan, start with the simplest solutions before progressing to more intricate assessments. Begin by inspecting the fuses associated with the cruise control system, as a blown fuse can often be the culprit behind the malfunction. Next, evaluate the brake pedal and throttle body for any signs of wear or damage, since these components play a crucial role in cruise control operation. If these initial checks do not reveal the issue, move on to the cruise control module, sensor, switch, and throttle actuation, ensuring that each part is functioning correctly. Disconnecting the cruise vacuum line and the cruise cable at the throttle body can help you identify any blockages or disconnections. Additionally, check the cruise control on/off button for any sticking or contact problems, which can be resolved by gently tapping the module on the steering wheel. Ensure that all connectors related to the cruise control system are secure, as loose connections can lead to functionality loss. If the problem persists, try resetting the system by toggling the cruise control off and on, then setting a speed to see if it engages. Finally, inspect the fuse and relay panels located under the driver's side dash and near the battery for any additional blown fuses or faulty relays. By following this structured approach, you can systematically identify and resolve the issues affecting your cruise control system.
When dealing with a non-functional cruise control in a 1999 Dodge Caravan, it's essential to understand the common problems that may be at play. One of the primary issues could be a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied. If this switch malfunctions, it can prevent the system from engaging properly. Another potential culprit is a defective speed sensor; this component is vital for the cruise control to maintain a constant speed, and any failure here can disrupt its operation. Additionally, vacuum leaks can significantly impact the cruise control's functionality, as they affect the necessary vacuum pressure for the system to work correctly. A malfunctioning cruise control module may also be to blame, as it controls the system's response to user commands. Lastly, electrical issues, such as blown fuses or wiring problems, can interrupt the cruise control's operation. By identifying these common problems, DIYers can take the first steps toward diagnosing and potentially fixing the cruise control system in their Dodge Caravan.
Repairing the non-functioning cruise control in a 1999 Dodge Caravan should be prioritized due to its impact on safety, convenience, and fuel efficiency. While it may not pose an immediate danger like a brake failure, the absence of cruise control can lead to increased driver fatigue and distraction, particularly on long journeys where maintaining a consistent speed is crucial. This can compromise overall road safety, as the driver may struggle to focus on speed management. Additionally, the convenience of cruise control allows for a more relaxed driving experience, freeing the driver from the constant need to adjust the accelerator. Furthermore, a properly functioning cruise control system can enhance fuel efficiency by maintaining a steady speed, which is often lost when driving manually. Therefore, addressing this issue not only contributes to a safer and more comfortable driving experience but can also lead to long-term cost savings on fuel.
Read about related problems experienced by other Dodge Caravan drivers like you.
See what others are asking about their Dodge Caravan. Get answers from RepairPal's community of auto experts and enthusiasts.
