1999 Chevrolet Tracker Smells Like Gas

Common Causes of Gas Smells in Your 1999 Chevrolet Tracker and Essential Safety Measures to Take

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
15% chance it's the
Gas Cap
0%
40% chance it's the
Emissions Control System
0%
45% chance it's
Something else
The most common reasons a 1999 Chevrolet Tracker smells like gas are the gas cap, the fuel system, or the emissions control system.
  • Gas Cap: A loose or damaged gas cap can cause fuel vapors to escape, triggering the check engine light and potentially affecting fuel system pressure.
  • Emissions Control System: A faulty emissions control system can lead to increased hydrocarbon emissions and trigger the check engine light due to malfunctioning components like the EGR valve or O2 sensors.
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 smells like gas?

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 failing catalytic converter can cause a vehicle to fail emissions tests and turn on the check engine light. The exhaust might have an unusual smell. A restricted catalytic converter can result in a loss of engine power.

» LEARN MORE: How to tell if your catalytic converter is failing

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. The canister may also cause difficulty starting the engine, a rough idle, and poor fuel mileage.

When the fuel filter begins to clog, the engine suffers from fuel starvation. This will cause a significant reduction in power and may also cause a misfire. These conditions may be intermittent, or constant and worsen over time. As the issue progresses, the engine may being to stall immediately after starting, fail to start, hesitate under throttle, or stall at particular angles on hills.

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. A fuel tank leak may also cause difficulty starting the engine, a rough idle, and poor fuel mileage. When a fuel tank is simply corroded to the point of failure, the exterior tank condition rarely shows damage. The inside of the fuel tank will be rusted or corroded, and rust flakes or other debris may be floating in the fuel.

For most vehicles, the only symptom will be a check engine light or fuel tank filler cap light illuminating on the driver instrument cluster. This is to signal that there is an evaporative emissions (EVAP) leak. In some situations, the vehicle may take longer than normal to start, or, more rarely, the engine may not start at all. on-board diagnostic (OBD) trouble codes will refer to EVAP system failures such as a small or massive EVAP system leak. Lastly, the powertrain control module may notice a lean running condition, which could even lead to random and infrequent misfires.

What are the steps to diagnose the gas smell in a 1999 Chevrolet Tracker?

When diagnosing a gas smell in a 1999 Chevrolet Tracker, it's essential to adopt a systematic approach that prioritizes safety and efficiency. Start by checking for visible leaks under the vehicle, as this can quickly reveal any obvious issues with the fuel system. Next, inspect the fuel lines for cracks or loose connections, which are common culprits for gas odors. Don't overlook the fuel tank; any signs of damage or leaks here can lead to significant problems. Additionally, examine the fuel injectors and fuel filter, as these components can also contribute to gas smells if they are malfunctioning or clogged. It's crucial to assess the evaporative emissions control system, including the charcoal canister and purge valve, as failures in this system can release gas vapors. Lastly, inspect the exhaust system for leaks that might allow fumes to enter the cabin. If these steps do not identify the source of the smell, consulting a mechanic is advisable for a more thorough diagnosis. This methodical approach not only helps in pinpointing the issue but also ensures that you address the simplest problems first before moving on to more complex diagnostics.

What are the common causes of a gas smell in a 1999 Chevrolet Tracker?

When dealing with a gas smell in a 1999 Chevrolet Tracker, it's essential to identify the common problems that could be causing this issue. One of the first things to check is the gas cap; a loose or damaged cap can easily lead to fuel vapors escaping, creating a noticeable odor. Ensure that the cap is securely tightened and inspect the gasket for any signs of wear or damage. Additionally, fuel system issues are a significant concern; look for any visible leaks or puddles under the vehicle, as these can indicate a more serious problem that requires immediate attention. Lastly, consider the emissions control system, as malfunctions here can also contribute to a gas smell. If you notice a persistent odor, especially near the rear of the vehicle on the driver's side, it’s crucial to investigate further to prevent potential hazards and ensure the vehicle operates safely. Addressing these common causes promptly can help maintain the vehicle's performance and safety.

How urgent is it to address the gas smell in my 1999 Chevrolet Tracker?

Addressing a gas smell in your 1999 Chevrolet Tracker is not just a matter of convenience; it is an urgent safety concern that should not be overlooked. Ignoring the smell of gas can lead to severe consequences, including the risk of fire or explosion if a spark ignites the fumes. Additionally, prolonged exposure to gas fumes can pose serious health risks, leading to symptoms such as dizziness, headaches, and nausea, which can impair your ability to drive safely. Furthermore, a gas leak can result in significant fuel wastage, ultimately costing you more at the pump and affecting your vehicle's overall efficiency. Therefore, it is imperative to investigate and resolve any gas smell immediately to protect your health, ensure the safety of your vehicle, and avoid costly repairs down the line.

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