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.
To effectively diagnose the non-functioning cruise control in your 1999 INFINITI G20, start with the simplest checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box; a blown fuse can often be the culprit behind electrical issues. Next, examine the cruise control switch on the steering wheel for any signs of damage or malfunction, as a faulty switch can prevent the system from engaging. It's also crucial to verify the brake pedal switch, since a malfunction here can interrupt the cruise control operation. Additionally, check the vehicle speed sensor, which is vital for the cruise control to function correctly. Finally, using an OBD-II scanner to scan for error codes can provide further insights into any underlying issues. By following these steps in order, you can systematically identify and address the problem with your cruise control system.
When troubleshooting cruise control issues in a 1999 INFINITI G20, it's essential to consider several common problems that may be at play. A faulty cruise control switch is often the first suspect, as it can hinder the system's ability to engage or disengage properly. Additionally, a blown fuse within the cruise control circuit can disrupt functionality, making it a straightforward fix for DIYers. Another critical area to inspect is the vacuum system; any leaks can significantly impair the cruise control's ability to maintain speed. The speed sensor also plays a vital role, as inaccuracies in its readings can lead to erratic cruise control behavior. Furthermore, issues with the brake light switch can prevent the system from activating, since the cruise control is designed to deactivate when the brake pedal is pressed. Lastly, a malfunctioning throttle cable can interfere with the system's ability to adjust throttle position, further complicating the issue. By systematically checking these components, DIY enthusiasts can effectively diagnose and address the cruise control problems in their INFINITI G20.
While a malfunctioning cruise control system in a 1999 INFINITI G20 may not pose an immediate safety risk like brake or steering failures, it is still essential to address the issue promptly. Neglecting to repair the cruise control can lead to a less enjoyable driving experience, particularly on long trips where maintaining a consistent speed is crucial for comfort and fuel efficiency. Additionally, a faulty cruise control system can create distractions, as drivers may find themselves constantly adjusting their speed manually, which could lead to fatigue over time. Although the urgency may not be as high as with critical safety systems, addressing the cruise control issue sooner rather than later can enhance your overall driving experience, prevent potential complications, and ensure that you can enjoy the full benefits of your vehicle's features.
Read about related problems experienced by other INFINITI G20 drivers like you.
See what others are asking about their INFINITI G20. Get answers from RepairPal's community of auto experts and enthusiasts.