1999 Isuzu Oasis Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1999 Isuzu Oasis and How to Fix Them

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Reviewed by
Bo Fader
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 1999 Isuzu Oasis 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 1999 Isuzu Oasis 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.

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.

If the cruise control refuses to turn on at all, the actuator could be at fault. Likewise, if the cruise control stays on but does not maintain a consistent speed, the problem could be a bad actuator. In extreme cases, a malfunctioning actuator could cause the throttle to stick and prevent the vehicle from slowing down. These symptoms may point to a bad actuator. They may also point to other problems with the cruise control and related systems.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the steps to diagnose the non-functional cruise control in a 1999 Isuzu Oasis?

To effectively diagnose the non-functional cruise control in your 1999 Isuzu Oasis, begin with the simplest checks to avoid unnecessary complications. Start by inspecting the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable issue. Next, examine the cruise control switch to ensure it is operational; a malfunctioning switch can prevent the system from engaging. Following this, check the brake pedal switch, which is crucial for disengaging the cruise control when brakes are applied; if this switch is faulty, it can lead to significant issues. After these initial checks, test the speed sensor, as it is vital for the cruise control's functionality; a defective sensor can disrupt the entire system. Additionally, inspect the vacuum lines for any leaks or damages, as these can severely impact performance. Finally, if the problem persists, utilize a diagnostic scanner to identify any error codes that may provide further insight into the underlying issues. By systematically following these steps, you can effectively troubleshoot and potentially resolve the cruise control malfunction in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 1999 Isuzu Oasis?

When dealing with a malfunctioning cruise control system in a 1999 Isuzu Oasis, it's crucial to understand the common problems that could be at play. One of the first areas to check is the cruise control switch, as a faulty switch can prevent the system from engaging. Additionally, a blown fuse may disrupt the electrical flow necessary for the cruise control to function, so inspecting the fuses is a good starting point. Another potential issue could be vacuum leaks within the system, which can significantly affect its performance. The speed sensor also plays a vital role; if it's defective, it may cause the cruise control to disengage unexpectedly. Furthermore, the brake light switch is essential for the cruise control's operation, and any issues here can prevent activation. Lastly, don’t overlook the throttle cable, as any malfunction can hinder the system's ability to maintain speed. By systematically checking these components, DIYers can effectively diagnose and address the cruise control issues in their Isuzu Oasis.

How urgent is it to repair the non-functioning cruise control in a 1999 Isuzu Oasis?

When assessing the urgency of repairing the non-functioning cruise control in a 1999 Isuzu Oasis, it's essential to consider both the immediate and long-term implications of this issue. While cruise control primarily serves as a convenience feature, its failure can indicate underlying mechanical problems that may require attention. If the cruise control malfunction is symptomatic of broader issues, such as electrical faults or engine performance problems, delaying repairs could lead to more significant damage and costly repairs down the line. Additionally, for drivers who frequently embark on long journeys, the absence of cruise control can lead to increased fatigue and discomfort, making it a priority for those who value driving comfort. Ultimately, while the urgency may vary based on individual driving habits and the vehicle's overall condition, addressing the cruise control issue promptly can prevent potential safety risks and enhance the driving experience.

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