1999 Isuzu Hombre Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 1999 Isuzu Hombre

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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 1999 Isuzu Hombre 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 Hombre 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 non-functioning cruise control in a 1999 Isuzu Hombre?

To effectively diagnose the non-functioning cruise control in your 1999 Isuzu Hombre, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the fuse related to the cruise control system, as a blown fuse can often be the culprit. Locate the fuse box in your engine bay, remove the cruise control fuse, and test it with a multimeter to ensure it is intact. Next, assess the condition of the brake pedal and throttle body, as any issues here can directly impact cruise control functionality. Utilize a scanner to check for error codes and verify the operation of the speed sensor, which is crucial for cruise control to function properly. Additionally, examine the cruise control switch and brake switch for any signs of malfunction, and check for leaks in the vacuum compartment that could affect the system's performance. Finally, ensure that the cruise control module and associated sensors are in good condition, and confirm that the brake pedal is not stuck in the open position, as this can deactivate the cruise control. By following this diagnostic approach, you can efficiently identify and address the issues affecting your cruise control system.

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

When troubleshooting cruise control issues in a 1999 Isuzu Hombre, it's essential to consider several common problems that could be affecting its functionality. One of the first things to check is the fuse associated with the cruise control system, as a blown fuse is a straightforward issue that can easily be resolved. Additionally, inspect the cruise control switch and other related switches for any defects, as faulty switches can prevent the system from operating correctly. Electrical problems, including issues with sensors or the "check engine" light, may also contribute to the malfunction, so it's important to examine the vehicle's electrical system thoroughly. Furthermore, underlying engine or transmission problems can impact cruise control performance, making it crucial to address any mechanical issues. Lastly, brake-related components, such as a malfunctioning brake light or brake switch, can disrupt the cruise control system, so ensuring that the brake system is functioning properly is vital. By systematically addressing these potential issues, you can effectively troubleshoot and restore the cruise control functionality in your Isuzu Hombre.

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

When evaluating the urgency of repairing the non-functioning cruise control in a 1999 Isuzu Hombre, it is essential to consider how this feature impacts your driving experience. While cruise control is primarily a convenience, its malfunction can lead to safety concerns, especially during long drives where maintaining a consistent speed is crucial. If you find that the lack of cruise control affects your ability to drive safely or increases fatigue on extended trips, prioritizing this repair becomes more critical. Additionally, if you frequently travel long distances, the comfort and ease provided by a functioning cruise control system can significantly enhance your driving experience. Furthermore, if you are contemplating selling or trading in your vehicle, addressing the cruise control issue can positively influence its resale value. Ultimately, the decision to repair should be based on your driving habits, safety considerations, and future plans for the vehicle, making it wise to consult with a mechanic to evaluate the specific problem and determine the best course of action.

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1999 Isuzu Hombre Cruise Control Issues & Solutions