1997 Oldsmobile 88 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 1997 Oldsmobile 88

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Reviewed by
Aisha
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 1997 Oldsmobile 88 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 1997 Oldsmobile 88 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.

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 a non-functioning cruise control in a 1997 Oldsmobile 88?

When diagnosing a non-functioning cruise control in a 1997 Oldsmobile 88, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the fuse associated with the cruise control system, as a blown fuse is a common and easily rectifiable issue. Next, evaluate the cruise control switch to ensure it is operational, since a malfunctioning switch can prevent engagement. Following this, check the brake pedal switch, which is crucial for safety, as it disengages the cruise control when the brake is applied. If these components are functioning correctly, turn your attention to the speed sensor, as its failure can disrupt the cruise control's operation. Additionally, inspect the vacuum lines for any leaks or damage, particularly since older models like the Oldsmobile 88 often rely on vacuum pressure for cruise control functionality. Finally, using an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues that may not be immediately apparent. By following this structured diagnostic approach, you can effectively identify and address the problems affecting your vehicle's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 1997 Oldsmobile 88?

When troubleshooting the cruise control system in a 1997 Oldsmobile 88, it's essential to consider several common problems that could be at play. One of the first things to check is the vehicle's fuse box, as a blown fuse can easily disrupt the cruise control functionality. Additionally, the brake pedal switch is crucial; if it is faulty, it may prevent the cruise control from engaging since this switch is designed to deactivate the system when the brake is applied. Another potential culprit is the speed sensor; if it malfunctions, the cruise control may fail to maintain the desired speed. It's also important to inspect the throttle cable for any signs of damage or sticking, as issues here can hinder the system's performance. Lastly, be on the lookout for vacuum leaks within the cruise control system, as these can significantly affect its operation. By systematically checking these components, you can effectively diagnose and address the cruise control issues in your Oldsmobile 88.

How urgent is it to repair the non-functioning cruise control in a 1997 Oldsmobile 88?

When evaluating the urgency of repairing the non-functioning cruise control in your 1997 Oldsmobile 88, it is essential to recognize the potential safety risks associated with a malfunctioning system. A faulty cruise control can lead to unexpected acceleration or deceleration, which may compromise your control over the vehicle, especially during long drives where fatigue is a concern. Additionally, the convenience of cruise control significantly enhances the driving experience, allowing for a more relaxed journey on highways and reducing the physical strain of maintaining speed over extended periods. Furthermore, neglecting this repair could adversely affect the resale value of your vehicle; prospective buyers often seek cars with fully functional features, and a non-working cruise control may deter them. Therefore, while it may not be an immediate emergency, addressing the cruise control issue promptly is advisable to ensure safety, enhance driving comfort, and preserve the vehicle's market value.

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1997 Oldsmobile 88 Cruise Control Troubleshooting Guide