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.
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-functional cruise control in a 1991 Plymouth Grand Voyager, it's essential to adopt a systematic diagnostic approach that prioritizes simpler checks before delving into more complex issues. Begin by inspecting the fuse associated with the cruise control system, as a blown fuse can often be the simplest explanation for malfunction. Next, assess the cruise control switch located on the steering wheel; a faulty switch may require replacement to restore functionality. Following this, examine the vacuum lines for any signs of leaks or damage, as these can significantly impact the system's performance. If these initial checks do not resolve the issue, proceed to test the cruise control module using a multimeter to ensure it is receiving the correct voltage and exhibiting continuity. Additionally, verify the operation of the speed sensor, which is crucial for the cruise control system to function properly, as a malfunctioning sensor can disrupt its operation. Lastly, inspect the brake and clutch switches, as any faults here can prevent the cruise control from engaging. By following this structured approach, you can efficiently identify the root cause of the cruise control issue and take the necessary steps for repair.
When diagnosing cruise control issues in a 1991 Plymouth Grand Voyager, it's important to consider several common problems that could be at play. One of the primary culprits is a failed control module, which can disrupt the entire cruise control system's functionality. Additionally, problems with sensors or switches, such as a faulty brake switch or speed sensor, can prevent the cruise control from engaging or maintaining speed. Another area to investigate is the throttle actuation system; if there are issues with the throttle cable or electronic throttle control, it can hinder the cruise control's ability to adjust speed as needed. By systematically checking these components, DIYers can effectively identify and resolve the underlying issues affecting the cruise control system.
Addressing the non-functioning cruise control in your 1991 Plymouth Grand Voyager is more urgent than it may initially seem. A malfunctioning cruise control system can pose significant safety risks, as it may lead to unexpected acceleration or deceleration, increasing the likelihood of accidents. Additionally, without this feature, long drives can become more exhausting, detracting from the comfort that cruise control is designed to provide. Furthermore, neglecting this issue can adversely affect your vehicle's resale value; a well-maintained car with functional features is always more appealing to potential buyers. Lastly, the diagnostic process for identifying the root cause of the problem is crucial, as delaying repairs could result in more extensive and costly issues down the line. Therefore, prioritizing the repair of your cruise control system is essential for ensuring a safe, comfortable, and valuable driving experience.
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.
