1991 Isuzu Amigo Cruise Control Isn't Working

Diagnosing Common Issues with the Cruise Control System in Your 1991 Isuzu Amigo and How to Fix Them

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Reviewed by

Aisha

Written by RepairPal Car Genius

Updated January 14, 2025

30% chance it's the

Sensor

25% chance it's the

Control Module

25% chance it's the

Throttle

20% chance it's

Something else

The most common reasons a 1991 Isuzu Amigo cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.

Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
Control Module: A faulty control module can result in 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 acceleration and poor engine 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.

What are the best Isuzu repair shops?

RepairPal Certified shops can diagnose and repair your 1991 Isuzu Amigo electronics and electrical issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

How much does it cost to fix a 1991 Isuzu Amigo 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.

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.

How urgent is it to repair the non-functioning cruise control in a 1991 Isuzu Amigo?

Repairing the non-functioning cruise control in a 1991 Isuzu Amigo, while not immediately urgent, should not be overlooked due to its implications for driving comfort and safety. Cruise control enhances the driving experience, particularly on long journeys, by allowing drivers to maintain a steady speed without constant pedal pressure. However, if the malfunction stems from critical components like the brake switch, it could pose safety risks, as these systems are interconnected. Ignoring the issue may lead to further complications, such as increased wear on the vehicle or even more significant repairs down the line. Therefore, while the urgency may not be pressing, addressing the cruise control problem promptly is advisable to ensure both the comfort of your driving experience and the overall safety of your vehicle. Consulting a qualified mechanic for a thorough diagnosis can help prevent potential issues and restore the functionality of this convenient feature.

Related 1991 Isuzu Amigo Problems

Read about related problems experienced by other Isuzu Amigo drivers like you.

Check Engine Light and Erratic Fuel Gauge Operation

The fuel level sensor may fail resulting in erratic fuel gauge operation and illumination of the Check Engine Light. Replacement of the fuel sender assembly is recommended to correct this concern. A powertrain control module (PCM) software update may be necessary for the updated fuel level sensor to read correctly.

2 model years affected

Avg Mileage: 1145,445

11 others reported problem

2 comments

Mitsubishi Diamante cruise control malfunction after drive line obstruction removal

Some Mitsubishi Diamante owners report experiencing cruise control malfunctions after removing a drive line obstruction, often linked to issues with the control module, sensor, or switch. These problems may stem from failed components that prevent the cruise control system from engaging or holding speed, despite power being available to the dash and fuse. Additionally, throttle actuation issues, such as a faulty throttle position sensor, can lead to the engine's computer overcompensating with fuel, which may result in black exhaust from the tailpipe. Owners are advised to thoroughly troubleshoot the cruise control system and inspect key components like the control module, sensor, and throttle to identify any damage or malfunction caused during the obstruction removal process.

4 model years affected

See More 1991 Isuzu Amigo Problems

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