1993 Oldsmobile Cutlass Supreme Cruise Control Isn't Working

Fixing Cruise Control Issues in 1993 Oldsmobile Cutlass Supreme

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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 1993 Oldsmobile Cutlass Supreme 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 1993 Oldsmobile Cutlass Supreme 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.

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.

What are the steps to diagnose the cruise control issue in a 1993 Oldsmobile Cutlass Supreme?

To effectively diagnose the cruise control issue in a 1993 Oldsmobile Cutlass Supreme, it's essential to adopt a systematic diagnostic approach that prioritizes simpler checks before delving into more complex components. Begin by inspecting the fuse associated with the cruise control system, as a blown fuse is a straightforward and common cause of malfunction. If the fuse is intact, proceed to examine the cruise control module for any visible damage, as this component is crucial for the system's operation. Next, test the cruise control switch to ensure it is functioning properly, since a faulty switch can hinder the system's ability to engage or disengage. Following this, inspect the vacuum lines for any leaks or blockages, as these can significantly impact performance. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the system. Additionally, verify the functionality of the speed sensor, as it plays a vital role in maintaining a constant speed. Finally, ensure that the brake and clutch switches are operating correctly, as these switches are integral to the cruise control's engagement and disengagement. By following this structured approach, you can efficiently identify and address the underlying issues affecting the cruise control system in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 1993 Oldsmobile Cutlass Supreme?

When troubleshooting cruise control issues in a 1993 Oldsmobile Cutlass Supreme, it's important to consider several common problems that could be at play. A blown fuse is often the first culprit to check, as it can completely disable the cruise control system. If the fuse is intact, the next step is to inspect the cruise control switch, which may be faulty and prevent the system from engaging or disengaging properly. Additionally, vacuum leaks can disrupt the operation of the cruise control, so examining the vacuum lines for any signs of wear or damage is crucial. Another potential issue is a faulty speed sensor, which is essential for maintaining a consistent speed; if this sensor is malfunctioning, the cruise control may not work as intended. Furthermore, problems with the brake light switch can interfere with the cruise control's functionality, as it is designed to disengage when the brakes are applied. Lastly, a malfunctioning throttle cable can hinder the system's ability to maintain speed effectively. By systematically checking these components, DIYers can accurately diagnose and address the issue, restoring the cruise control functionality in their vehicle.

How urgent is it to address the non-functioning cruise control in a 1993 Oldsmobile Cutlass Supreme?

Addressing the non-functioning cruise control in a 1993 Oldsmobile Cutlass Supreme is crucial for several reasons. First and foremost, safety is a primary concern; a malfunctioning cruise control system can lead to erratic speed changes, increasing the risk of accidents. This is particularly important during long drives where maintaining a steady speed is essential for safe navigation. Additionally, the comfort and convenience that cruise control provides cannot be overlooked. It allows drivers to relax their foot during extended trips, enhancing the overall driving experience. Furthermore, neglecting this issue can adversely affect the vehicle's resale value. A well-maintained car, with all systems functioning properly, is more appealing to potential buyers. Therefore, while it may not seem like an immediate emergency, addressing the non-functioning cruise control should be a priority to ensure safety, enhance comfort, and protect the vehicle's value.

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