2000 Isuzu Trooper Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2000 Isuzu Trooper and How to Fix Them

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Reviewed by
Devin Cabugcal
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 2000 Isuzu Trooper 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 2000 Isuzu Trooper 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 steps to diagnose the non-functioning cruise control in a 2000 Isuzu Trooper?

To effectively diagnose the non-functioning cruise control in a 2000 Isuzu Trooper, begin with the simplest checks before moving on to more complex diagnostics. Start by inspecting the fuse associated with the cruise control system, as a blown fuse can easily disrupt its operation. Next, examine the cruise control switch to ensure it is functioning correctly; a faulty switch can prevent the system from engaging. It’s also crucial to check the brake pedal switch, which serves as a safety feature that disengages the cruise control when the brakes are applied. If these components are in working order, turn your attention to the vacuum lines, as any leaks can compromise the system's performance. Finally, utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues affecting the cruise control system. By following this structured approach, you can systematically identify and address the problem, making your DIY troubleshooting more effective.

What are the common problems that could cause the cruise control to stop working in a 2000 Isuzu Trooper?

When troubleshooting the cruise control system in a 2000 Isuzu Trooper, it's essential to understand the common problems that may lead to its malfunction. One frequent issue is a faulty cruise control switch, which can hinder the system's ability to engage or disengage properly. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to operate, while vacuum leaks can prevent the system from maintaining speed effectively. Another critical component is the speed sensor; if it is defective, it can provide inaccurate speed readings, ultimately affecting the cruise control's performance. Furthermore, issues with the brake light switch can prevent the cruise control from activating, as it is designed to deactivate when the brakes are applied. Lastly, a malfunctioning throttle cable can interfere with the system's ability to adjust the vehicle's speed accurately. Identifying these potential problems can help you diagnose the issue more effectively, but for a thorough inspection and repair, consulting a professional mechanic is recommended.

How urgent is it to repair the non-functioning cruise control in a 2000 Isuzu Trooper?

Repairing the non-functioning cruise control in a 2000 Isuzu Trooper should be considered a priority, albeit not as critical as immediate safety issues like brake failure. The absence of cruise control can lead to increased driver fatigue, especially during long drives, as it requires constant manual speed adjustments. This can distract the driver and potentially compromise safety on the road. Additionally, a functioning cruise control system enhances the overall driving experience by providing comfort and reducing the physical strain of maintaining speed over extended periods. Furthermore, if you plan to sell your Trooper in the future, having all features operational, including cruise control, can significantly boost its resale value. Therefore, while it may not be an emergency repair, addressing the cruise control issue promptly is advisable to ensure a safer, more enjoyable driving experience and to maintain the vehicle's market value.

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2000 Isuzu Trooper Cruise Control Issues & Repairs