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.
To effectively diagnose the non-functioning cruise control in your 1994 Plymouth Grand Voyager, start with the simplest solutions. Begin by checking the fuses related to the cruise control system, as a blown fuse can often be the culprit behind electrical issues. Next, inspect the brake pedal and throttle body, as their condition can directly impact cruise control functionality. If these initial checks do not resolve the issue, utilize a scanner to identify any error codes that may provide insight into the problem. Pay special attention to the multifunction switch, as broken wires here can disrupt the system; if necessary, consider replacing this component. Additionally, if you suspect vacuum-related issues, the vacuum release valve may need replacement. Throughout this process, remain vigilant for any electrical faults or wiring problems, particularly those indicated by diagnostic codes like P0594. Lastly, consult your vehicle's manual to locate the fuse box and ensure that the fuse dedicated to the cruise control is intact. By following this structured approach, you can systematically identify and address the issues affecting your cruise control system.
When dealing with a malfunctioning cruise control system in a 1994 Plymouth Grand Voyager, it's essential to consider several common issues that could be at play. One of the first things to check is the fuse; a blown fuse can easily disrupt the entire system, preventing it from engaging. Next, inspect the brake pedal switch, as this component is designed to disengage the cruise control when the brake is applied. If this switch is faulty, it may inadvertently disable the cruise control. Additionally, vacuum leaks within the cruise control system can lead to a loss of functionality, as the system relies on a vacuum to operate correctly. Another critical component to examine is the speed sensor; if this sensor is malfunctioning, the cruise control will struggle to maintain a set speed. Lastly, the cruise control module itself may be defective, which can also result in system failure. By systematically checking these components, DIYers can effectively diagnose and address the issues affecting their vehicle's cruise control system.
When contemplating the urgency of repairing the non-functioning cruise control in your 1994 Plymouth Grand Voyager, it's essential to weigh the implications of leaving the issue unresolved. While cruise control is primarily a convenience feature, its absence can lead to increased driver fatigue, especially on long journeys, which may compromise overall safety and comfort. Additionally, if you have plans to sell the vehicle, a fully functional cruise control system can enhance its resale value, making it a worthwhile investment. To make an informed decision, consider having a professional conduct a diagnostic check to identify the underlying cause of the malfunction. This assessment can clarify whether the repair is a simple fix or if it requires more extensive work, ultimately guiding you on how soon you should address the issue. In summary, while the repair may not be immediately critical, addressing it sooner rather than later can improve your driving experience and maintain the vehicle's value.

Not sure what's wrong?
Get help from a trusted expert
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.
Read about related problems experienced by other Plymouth Grand Voyager drivers like you.
See what others are asking about their Plymouth Grand Voyager. Get answers from RepairPal's community of auto experts and enthusiasts.