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 1992 Cadillac Brougham, start with a systematic approach that prioritizes simpler checks before delving into more complex issues. Begin by inspecting for vacuum problems, as these are common culprits in older vehicles and can significantly impact cruise control functionality. Next, examine the cruise control brake switch, which is known to fail and can be easily replaced if necessary. Don’t forget to check the cruise control fuse; a blown fuse can disrupt the entire system and is a straightforward fix. Additionally, inspect the hoses connected to the cruise control system for any leaks or damage, as these can also hinder performance. If these initial checks do not resolve the issue, consider the cruise control module, as a malfunction here can prevent the system from operating correctly. By following this diagnostic approach, you can efficiently identify and address the root cause of your cruise control problems, ensuring a smoother driving experience.
When dealing with a malfunctioning cruise control system in a 1992 Cadillac Brougham, it's important to consider several common problems that could be at play. One of the first things to check is the fuse associated with the cruise control; a blown fuse can easily disrupt the system's operation. Additionally, the cruise control switch itself may be faulty, preventing the system from engaging or disengaging as intended. Another potential issue is vacuum leaks within the cruise control system, which can significantly affect its performance. The speed sensor is also crucial, as a malfunction here can lead to incorrect speed readings, hindering the cruise control's ability to maintain a set speed. Furthermore, the brake light switch should be inspected, as any issues with it can prevent the cruise control from activating altogether. Lastly, a malfunctioning throttle cable can interfere with the system's ability to adjust the throttle position, further complicating the issue. By systematically diagnosing these areas, DIYers can effectively identify and resolve the underlying problems affecting their cruise control system.
Addressing the malfunctioning cruise control in your 1992 Cadillac Brougham is not just a matter of convenience; it is a pressing safety concern that requires immediate attention. When cruise control fails, you may find yourself manually maintaining speed during long drives, which can lead to fatigue and discomfort, detracting from your overall driving experience. Moreover, a malfunctioning system can negatively impact your vehicle's fuel efficiency, as maintaining a consistent speed is often more economical than fluctuating speeds. Ignoring these symptoms can escalate the problem, potentially causing further damage to the vehicle's electrical system and leading to more expensive repairs in the future. Most importantly, safety should be your top priority; cruise control issues can compromise your ability to control the vehicle's speed, especially on highways where maintaining a steady pace is crucial. Therefore, it is essential to address any cruise control malfunctions promptly 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.
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.
See what others are asking about their Cadillac Brougham. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Cadillac Brougham drivers like you.