1998 Mitsubishi Montero Engine Is Stalling

Resolve Engine Stalling in Your 1998 Mitsubishi Montero

Find Repair Location
Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Fuel System
0%
15% chance it's the
Air Intake System
0%
55% chance it's
Something else
The most common reasons a 1998 Mitsubishi Montero engine is stalling are the fuel system, the air intake system, or the ignition system.
  • Fuel System: A clogged fuel filter or failing fuel pump can restrict fuel flow, resulting in poor engine performance and starting issues.
  • Air Intake System: A dirty or damaged air filter or a malfunctioning mass airflow sensor can restrict airflow, leading to reduced engine performance and efficiency.
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 1998 Mitsubishi Montero engine is stalling?

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.

If the MAF sensor sends an erroneous signal, a few things happen. The engine's computer will trigger the check engine light, and the on-board diagnostic (OBD) trouble codes will reflect the airflow discrepancy noted by the MAF sensor. Depending on the reported volume of air, the engine may try to compensate for these conditions, causing the engine to burn excessive amounts of fuel and emit black smoke from the exhaust. In this case, the OBD trouble codes would also reference faults recognized by the exhaust oxygen sensors. The engine may also have issues with idling roughly, failing to start, stalling, hesitation, power loss, misfires, and fuel consumption.

»MORE: Signs of a failing mass airflow sensor

A faulty oxygen sensor is one of the most common causes of a check engine light. Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

What are the initial diagnostic steps to take for a stalling issue in a 1998 Mitsubishi Montero?

When addressing a stalling issue in your 1998 Mitsubishi Montero, it's essential to adopt a systematic diagnostic approach that prioritizes simpler checks before delving into more complex systems. Start by examining the fuel system, as fuel delivery problems are a common culprit. Ensure the fuel pump is operational, check for clogs in the fuel filter, and confirm that the fuel injectors are clean. Next, turn your attention to the ignition system; inspect the spark plugs for wear and proper gap, test the ignition coils for adequate spark delivery, and verify that the ignition timing aligns with manufacturer specifications. The air intake system also warrants inspection; a dirty air filter or a malfunctioning throttle body can impede performance, so ensure these components are clear and functioning. Utilizing an OBD-II scanner can provide valuable insights by revealing any error codes related to the engine, fuel, or ignition systems. Lastly, don’t overlook the possibility of vacuum leaks, which can disrupt engine performance; inspect vacuum hoses for damage and consider using a smoke machine to detect hidden leaks. By following these steps, you can effectively diagnose and address the stalling issue, empowering you to take control of your vehicle's performance.

What are the common problems that could cause the engine to stall in a 1998 Mitsubishi Montero?

When diagnosing engine stalling issues in a 1998 Mitsubishi Montero, it's essential to consider several common problems that could be at play. A faulty ignition system is often a primary suspect; components like the ignition coil or distributor may malfunction, disrupting the spark needed for combustion. Additionally, fuel delivery issues can arise from a clogged fuel filter or a failing fuel pump, preventing the engine from receiving the necessary fuel. Air intake problems, such as a dirty air filter or a malfunctioning mass airflow sensor, can also hinder engine performance and lead to stalling. Furthermore, vacuum leaks can disrupt the air-fuel mixture, causing instability in engine operation. It's also crucial to check for faulty sensors, including the crankshaft position sensor and throttle position sensor, as these can significantly impact engine performance. Lastly, electrical issues, such as a weak battery or a faulty alternator, can contribute to stalling. By systematically addressing these potential issues, DIYers can effectively troubleshoot and resolve engine stalling problems in their Montero.

How urgent is it to address the stalling issue in a 1998 Mitsubishi Montero?

Addressing the stalling issue in a 1998 Mitsubishi Montero is of utmost urgency due to the significant safety risks it poses. Stalling can occur unexpectedly, particularly while driving, which can lead to dangerous situations such as loss of control or accidents. Moreover, neglecting this problem can result in further damage to the engine and other critical components, leading to more extensive and costly repairs down the line. Regular maintenance and prompt repairs are essential not only for the vehicle's performance but also for ensuring the safety of its occupants. Therefore, it is crucial to prioritize resolving the stalling issue as soon as possible to mitigate risks and maintain the vehicle's overall health.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

1998 Mitsubishi Montero Engine Stalling: Causes & Repairs