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.
If the cruise control refuses to turn on at all, the actuator could be at fault. Likewise, if the cruise control stays on but does not maintain a consistent speed, the problem could be a bad actuator. In extreme cases, a malfunctioning actuator could cause the throttle to stick and prevent the vehicle from slowing down. These symptoms may point to a bad actuator. They may also point to other problems with the cruise control and related systems.
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 a 1999 Nissan Quest, start with the simplest solutions before progressing to more intricate checks. Begin by inspecting the fuse associated with the cruise control system; a blown fuse is often the easiest fix and can immediately restore functionality. Next, examine the cruise control switch located on the steering wheel, as a malfunctioning switch can prevent the system from engaging. Following this, check the brake pedal switch, which is crucial for disengaging the cruise control when brakes are applied; if this switch is faulty, it may disable the entire system. Additionally, assess the vehicle speed sensor, as it is vital for the cruise control's operation; a defective sensor can lead to significant issues. Finally, utilize an OBD-II scanner to identify any error codes that may provide insight into underlying problems. By systematically addressing these components, you can effectively diagnose and potentially resolve the cruise control issues in your Nissan Quest.
When the cruise control in a 1999 Nissan Quest ceases to function, several common issues may be at play. One of the primary culprits is 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 issue is a defective speed sensor; this component is essential for the cruise control to maintain a steady speed, and any failure here can disrupt its operation. Additionally, a blown fuse within the cruise control system can completely halt its functionality, making it a straightforward fix if identified. Vacuum leaks in the engine can also affect the cruise control, as the system relies on vacuum pressure to operate effectively. Lastly, a malfunctioning cruise control module can be a significant factor in cruise control failure. For those looking to tackle these issues themselves, it is advisable to start by checking the brake pedal switch and fuses, as these are often the easiest to diagnose and repair. If these components are functioning correctly, further investigation into the speed sensor and vacuum system may be necessary.
Addressing a malfunctioning cruise control in a 1999 Nissan Quest is of utmost importance due to the potential safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions and increase the likelihood of accidents. Moreover, neglecting this issue can result in further damage to the vehicle's components, leading to more extensive and costly repairs down the line. Beyond safety and financial implications, a malfunctioning cruise control detracts from the overall driving experience, diminishing the convenience and comfort that this feature is designed to provide. Therefore, it is crucial to prioritize repairs to ensure both your safety and the optimal performance of your vehicle.
See what others are asking about their Nissan Quest. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Nissan Quest drivers like you.