1993 Mitsubishi Mighty Max Cruise Control Isn't Working

Diagnosing Common Issues with Cruise Control in Your 1993 Mitsubishi Mighty Max and How to Fix Them

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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 1993 Mitsubishi Mighty Max 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 Mitsubishi Mighty Max 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.

What are the initial steps to diagnose the non-functional cruise control in a 1993 Mitsubishi Mighty Max?

When diagnosing the non-functional cruise control in a 1993 Mitsubishi Mighty Max, it's crucial to follow a structured diagnostic approach that starts with the simplest checks. Begin by inspecting the fuse related to the cruise control system, as a blown fuse can easily disrupt its operation. If the fuse is intact, move on to the cruise control switch, checking for any visible damage or wear that could prevent the system from engaging. Next, examine the vacuum lines for any leaks or damage, since a loss of vacuum pressure can significantly affect performance. If these initial checks do not reveal the issue, use a multimeter to test the cruise control module for proper voltage and continuity, as a malfunctioning module can lead to failure. Lastly, ensure that the throttle cable is correctly adjusted and not sticking, as any misalignment can interfere with the cruise control's ability to maintain speed. By systematically addressing these areas, you can effectively diagnose and resolve the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 1993 Mitsubishi Mighty Max?

When troubleshooting cruise control issues in a 1993 Mitsubishi Mighty Max, it's essential to consider several common problems that could be at play. A blown fuse is often the first culprit to check, as it can disrupt the electrical flow necessary for the system to operate. If the fuse is intact, the next step is to inspect the cruise control switch; a malfunctioning switch may prevent the system from engaging or disengaging as intended. Additionally, vacuum leaks can significantly impact the cruise control's performance, as they disrupt the necessary pressure for the system to function correctly. Another critical component to examine is the speed sensor; if it is faulty, the cruise control may struggle to maintain a consistent speed. Lastly, issues with the brake light switch can also interfere with the cruise control's operation, as it relies on this switch to disengage when the brakes are applied. By systematically checking these components, DIYers can effectively diagnose and potentially resolve cruise control issues in their Mitsubishi Mighty Max.

How urgent is it to repair the non-functioning cruise control in a 1993 Mitsubishi Mighty Max?

When evaluating the urgency of repairing the non-functioning cruise control in your 1993 Mitsubishi Mighty Max, it's essential to consider the potential consequences of neglecting this issue. While cruise control is primarily a convenience feature, its malfunction can lead to increased driver fatigue during long trips, which may compromise safety. If the system's failure affects your ability to maintain a steady speed or control the vehicle effectively, addressing the repair becomes more critical. Additionally, if you frequently embark on long journeys, restoring this feature can significantly enhance your driving comfort. Furthermore, keeping all vehicle features in working order can positively impact its resale value, making it more appealing to potential buyers. Therefore, while it may not be an immediate emergency, assessing your driving habits and consulting with a mechanic can help you determine the best timing for this repair, ensuring both safety and comfort on the road.

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1993 Mitsubishi Mighty Max Cruise Control Issues & Repairs