1992 Cadillac DeVille Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 1992 Cadillac DeVille

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 1992 Cadillac DeVille cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 1992 Cadillac DeVille cruise control isn't working?

Common Repairs

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.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 1992 Cadillac DeVille?

When troubleshooting the non-functional cruise control in a 1992 Cadillac DeVille, it's essential to adopt a systematic diagnostic approach that prioritizes simpler fixes before delving into more complex issues. Start by checking for blown fuses related to the cruise control system, as this is a common and easily rectifiable problem. Next, assess the condition of the brake pedal and throttle body, since any irregularities here can directly impact cruise control functionality. Inspect the cruise control/brake switch for any signs of malfunction, as this component plays a crucial role in the system's operation. Consulting the vehicle's repair manual will guide you to the fuse box in the engine bay, where you can locate and remove the specific fuse for the cruise control. Additionally, verify the condition of the vehicle speed sensor and its circuit, as failures in this area can prevent the cruise control from engaging. By understanding these common culprits—such as blown fuses, faulty switches, and speed sensor issues—you can effectively narrow down the potential causes of the malfunction and take the necessary steps to restore functionality to your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 1992 Cadillac DeVille?

When dealing with cruise control issues in a 1992 Cadillac DeVille, it's essential to understand the common problems that may arise. One of the first things to check is the fuse; a blown fuse can easily disrupt the cruise control's functionality, and replacing it is a straightforward fix. Next, consider the cruise control switch located on the steering wheel; if it's faulty, it may prevent the system from engaging, necessitating a replacement. Additionally, inspect the vacuum lines for any leaks, as these can significantly impact the operation of the cruise control system. A malfunctioning speed sensor is another potential culprit, and if it's not providing accurate readings, the cruise control may fail to work properly. Lastly, ensure that the brake light switch is functioning correctly, as issues here can cause the cruise control to disengage unexpectedly. By systematically checking these components, you can effectively troubleshoot and resolve the cruise control problems in your Cadillac DeVille.

How urgent is it to repair the non-functioning cruise control in a 1992 Cadillac DeVille?

When contemplating the urgency of repairing the non-functioning cruise control in a 1992 Cadillac DeVille, it's essential to weigh the implications of neglecting this feature. While cruise control is primarily a convenience, its malfunction can lead to increased driver fatigue during long trips, potentially compromising safety. If the system's failure is linked to other electrical issues or if it affects the vehicle's drivability, addressing the repair becomes more pressing. Additionally, for those who frequently embark on extended journeys, restoring this feature can significantly enhance comfort and reduce stress. Furthermore, maintaining all vehicle functions, including cruise control, is crucial for preserving resale value; a fully operational vehicle is more appealing to potential buyers. Therefore, while it may not be an immediate emergency, considering the safety, comfort, and financial implications can help prioritize the repair of the cruise control system in your Cadillac DeVille.

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