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 diagnose the non-functioning cruise control in your 1991 Oldsmobile Toronado, begin with a methodical diagnostic approach that emphasizes simplicity. Start by checking the fuse associated with the cruise control system, as a blown fuse can often be the root of the problem. Next, inspect the wiring for any visible damage or loose connections, which can disrupt the electrical flow necessary for the system to operate. Following this, test the cruise control switch using a multimeter to ensure it is functioning correctly; this step is crucial as a faulty switch can prevent the system from engaging. If your vehicle's cruise control relies on vacuum, examine the vacuum lines for any leaks or blockages that could impair performance. Finally, consider using a diagnostic scanner to check for any error codes that may provide further insight into the issue. By following these steps, you can systematically identify and address the potential causes of your cruise control malfunction, making the troubleshooting process more efficient and effective.
When dealing with a malfunctioning cruise control system in a 1991 Oldsmobile Toronado, it's crucial to understand the common problems that could be at play. One of the first things to check is the fuse; a blown fuse can easily disrupt the entire system, rendering it inoperable. If the fuse is intact, the next step is to inspect the cruise control switch itself, as a faulty switch may prevent the system from engaging or disengaging as intended. Additionally, vacuum leaks can significantly impact the cruise control's functionality, so examining the vacuum lines for any signs of wear or damage is essential. Another critical component to consider is the speed sensor; if this sensor is malfunctioning, it can hinder the cruise control's ability to maintain a consistent speed. Lastly, issues with the brake light switch can also interfere with cruise control operation, as this switch is designed to disengage the system when the brakes are applied. By systematically checking these components, DIYers can effectively diagnose and address the cruise control issues in their Toronado.
When considering the urgency of fixing a non-functioning cruise control in a 1991 Oldsmobile Toronado, it's essential to recognize that while it may not seem like an immediate emergency, the implications of neglecting this issue can be significant. A malfunctioning cruise control system can point to deeper electrical problems or sensor failures that might compromise the vehicle's overall performance and safety. For DIY enthusiasts, understanding the potential risks is crucial; a faulty cruise control can lead to erratic speed control, increasing the likelihood of accidents, especially during long drives where this feature is most beneficial. Moreover, addressing the issue promptly can prevent further damage to the vehicle's systems, saving time and money in the long run. Therefore, while it may be tempting to postpone repairs, prioritizing the inspection and potential repair of the cruise control system is a wise decision to ensure a safe and comfortable driving experience.

Not sure what's wrong?
Get help from a trusted expert
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.
See what others are asking about their Oldsmobile Toronado. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Oldsmobile Toronado drivers like you.