1999 Chevrolet Tracker Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 1999 Chevrolet Tracker: Common Causes and Solutions

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Emissions System
0%
60% chance it's
Something else
The most common reasons a 1999 Chevrolet Tracker has a check engine light are an emissions system component, a sensor, or a catalytic converter.
  • Emissions System: A faulty emissions system component, such as an oxygen sensor or EGR valve, can lead to increased emissions and trigger the check engine light.
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 Chevrolet Tracker has a check engine light?

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.

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.

Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless. However, there is a way to categorize them in two ways. Permanent and intermittent problems. Permanent problems appear and remain. This may be the vehicle will not start, the radio does not work, or the door chime will not turn off among many, many others. These problems are more straight-forward to diagnose since they present themselves at all time. This means there will always be a fault to find. Intermittent electrical problems, however, can be difficult or impossible to locate, since they appear then disappear without warning. The best case scenario for an intermittent issue is when replicating the problem is easily accomplished and understood. This allows a technician to make an issue semi-permanent, allowing them to find the fault. Other issues that come and go without warning and cannot be replicated on demand must occur when the technician is servicing the vehicle, otherwise there is no problem to correct. It is most important to understand that electrical system faults always require inspection, and can include the vehicle working in any manner, or not working at all.

Like we noted in the last section, general diagnosis symptoms are the most vague of the bunch. There are several diagnostic spectrums, electrical diagnosis, drivability diagnostics, engine diagnostics, transmission diagnostics, and the list could continue for about 5 or 10 more spectrums of diagnostics. The most important take-away here, is that general diagnostics are diagnostics that have no other spectrum in which they fit, or the problem is unknown. This means that any vehicle left outside of a repair facility with the keys and an authorization to perform diagnosis will be diagnosed under the general diagnosis spectrum.

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 steps to diagnose the check engine light on a 1999 Chevrolet Tracker?

When faced with a check engine light on your 1999 Chevrolet Tracker, start by checking the gas cap, as a loose cap is a frequent culprit that can trigger the warning. Ensure it is tightened properly, as this simple fix can often resolve the issue. Next, take a moment to inspect the dashboard gauges for any additional warning lights or irregular readings that may indicate other problems. If the light persists, using an OBD-II scanner is a crucial step; this tool will help you retrieve the specific error code associated with the check engine light. Once you have the code, research its meaning in your vehicle's manual or online resources to gain insight into the potential issue. Additionally, visually inspect the wiring and connections under the hood for any signs of damage or disconnection, as these can also lead to diagnostic trouble codes. If these steps do not lead to a resolution or if you feel uncertain about the findings, consulting a mechanic is a wise choice to ensure your vehicle is properly diagnosed and repaired.

What are the common problems that could cause the check engine light to illuminate in a 1999 Chevrolet Tracker?

When the check engine light comes on in a 1999 Chevrolet Tracker, it can be a source of frustration for any DIY mechanic. Understanding the common problems that may trigger this warning light is essential for effective troubleshooting. One frequent culprit is a loose gas cap, which can lead to fuel vapor leaks and is easily rectified by ensuring the cap is securely fastened. Another common issue is a faulty oxygen sensor, which can negatively impact fuel efficiency and emissions; replacing this sensor can restore optimal performance. Additionally, problems with the catalytic converter, such as clogs or failures, can also illuminate the check engine light, often requiring professional assessment. A malfunctioning mass airflow sensor can disrupt the air-fuel mixture, while issues with spark plugs or ignition coils may result in engine misfires, both of which are manageable with basic mechanical skills. Other potential causes include a faulty thermostat, vacuum leaks, and problems with the EGR valve, all of which can be diagnosed with careful inspection. Transmission issues and electrical system problems, such as faulty sensors or wiring, may also trigger the light, though these can be more complex to address. By familiarizing yourself with these common issues, you can take the first steps toward diagnosing and resolving the check engine light concerns in your Tracker.

What should I do if the check engine light comes on in my 1999 Chevrolet Tracker?

When the check engine light illuminates in your 1999 Chevrolet Tracker, it’s crucial to act swiftly to avoid further complications. Ignoring this warning can lead to severe engine damage or safety hazards, as the light often indicates underlying issues that require immediate attention. Start by checking the gas cap; a loose cap is a common culprit and an easy fix. If the light persists, consider using an OBD-II scanner to read the trouble codes, which can provide insight into the specific problem. While DIY diagnostics are helpful, don’t hesitate to visit a professional service center if you encounter complex issues or if the light indicates a serious malfunction. Remember, driving with an active check engine light can exacerbate the problem, so it’s best to pull over safely and address the issue promptly. Taking these steps not only helps maintain your vehicle’s performance but also ensures your safety on the road.

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