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.
Addressing a malfunctioning cruise control in a 1997 Dodge Neon is not just a matter of convenience; it is crucial for ensuring safety and optimal vehicle performance. When cruise control fails, it can lead to significant inconveniences during long drives, particularly on highways where maintaining a steady speed is essential. Moreover, underlying issues such as a faulty control module, sensor malfunctions, or throttle actuation problems can adversely affect the vehicle's overall performance. Neglecting these symptoms may result in the engine's computer overcompensating with fuel, which can cause black exhaust emissions and indicate deeper mechanical problems. A common culprit for cruise control failure is a broken clock spring under the steering wheel, which disrupts electrical connections and can also impact airbag functionality. Additionally, a blown fuse or issues with the brake pedal switch and throttle control system can further complicate matters. While it may not seem like an immediate emergency, timely diagnosis and repair of cruise control issues are vital to prevent further complications and ensure a smooth, safe driving experience. For DIY enthusiasts, addressing these problems promptly can save time and money while enhancing the reliability of the vehicle.
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