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 troubleshoot the non-functional cruise control in your 1999 Oldsmobile Aurora, start by checking the cruise control fuse located in the fuse box; a blown fuse can often be the simplest fix. Next, examine the cruise control switch on the steering wheel for any signs of damage or malfunction, as this component is crucial for activating the system. It's also important to inspect the brake pedal switch, since a faulty switch can inadvertently disable the cruise control. Additionally, ensure that the vehicle speed sensor is functioning properly, as it provides essential data for the cruise control to operate. Finally, consider using a diagnostic scanner to check for any error codes in the vehicle's computer system, which can offer valuable insights into underlying issues. By following these steps in order, you can systematically identify and address the problems affecting your cruise control system.
When the cruise control in a 1999 Oldsmobile Aurora ceases to function, several common problems may be at play. One of the first areas to check is the cruise control switch, as a faulty switch can prevent the system from engaging. Additionally, inspecting the vehicle's fuse box for a blown fuse is crucial, as this can disrupt the entire cruise control system. Another potential issue is vacuum leaks; the cruise control relies on a vacuum system, and any leaks can lead to failure. It's also important to consider the speed sensor, as a defective sensor can provide inaccurate speed readings, hindering the cruise control's ability to maintain speed. Lastly, issues with the brake pedal switch can cause the cruise control to disengage unexpectedly, so ensuring this component is functioning correctly is essential. By systematically checking these components, DIYers can often identify and resolve the underlying issues affecting the cruise control system.
Repairing the non-functioning cruise control in a 1999 Oldsmobile Aurora should be approached with a sense of urgency, primarily due to the safety concerns it raises. A malfunctioning cruise control system can lead to unpredictable vehicle behavior, such as unintended acceleration or deceleration, which significantly increases the risk of accidents, especially during long drives where driver fatigue is a factor. Additionally, the absence of this feature can detract from the overall driving experience, making long trips less comfortable and more taxing. Furthermore, from a financial perspective, maintaining all vehicle features, including cruise control, is crucial for preserving resale value. Prospective buyers often look for fully functional systems, and a non-working cruise control could be a red flag. Therefore, while it may not be an immediate emergency, addressing the cruise control issue promptly is essential for ensuring safety, enhancing driving comfort, and protecting the vehicle's value.

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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.
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.
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