1997 Ford Taurus Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 1997 Ford Taurus: Common Causes and Solutions

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Reviewed by
Devin Cabugcal
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 1997 Ford Taurus 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 1997 Ford Taurus 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 diagnostic steps to take for a check engine light on a 1997 Ford Taurus?

When faced with a check engine light on your 1997 Ford Taurus, the first step is to locate the on-board diagnostics (OBD) plug, typically found under the dashboard near the steering column. Once you have access to the OBD plug, use a scanner to read the trouble codes stored in the vehicle's system; these codes will provide insight into the specific issues triggering the light. Common culprits for the check engine light include a malfunctioning O2 sensor, faulty spark plugs, or worn spark plug wires, so it's beneficial to familiarize yourself with these potential problems. After identifying the trouble codes, you can begin diagnosing the root cause of the issue. It's crucial to address and fix the underlying problem before attempting to reset the check engine light, as ignoring it could lead to further complications. Lastly, always prioritize servicing your vehicle promptly to avoid any potential damage, ensuring your Ford Taurus remains in optimal condition. By following these steps, you can effectively manage the check engine light and maintain your vehicle's performance.

What are the common causes for a check engine light in a 1997 Ford Taurus?

When diagnosing the common causes for a check engine light in a 1997 Ford Taurus, it's essential to consider several potential issues that could be affecting your vehicle. One of the most frequent culprits is a loose gas cap, which can lead to fuel vapors escaping and trigger the warning light. Additionally, a faulty oxygen sensor can significantly impact fuel efficiency and emissions, making it another common reason for the light to illuminate. Problems with the catalytic converter, such as clogs or failures, can also activate the check engine light, indicating a need for immediate attention. Furthermore, issues with spark plugs or ignition coils can disrupt engine performance, leading to the same warning. Lastly, a malfunctioning mass airflow sensor can throw off the air-fuel mixture, resulting in the check engine light coming on. While these are some of the most common causes, it's advisable to have a professional mechanic conduct a thorough diagnosis to accurately identify the specific issue affecting your Taurus.

What should I do if the check engine light comes on in my 1997 Ford Taurus?

When the check engine light comes on in your 1997 Ford Taurus, it’s essential to recognize the urgency of the situation. This warning signal can indicate a range of issues, some of which may pose serious safety risks or lead to significant engine damage if neglected. If the light is flashing, it’s a clear sign that immediate action is required; safely pull over and turn off the engine to prevent further complications. A common culprit for this warning is a loose or damaged gas cap, so start by checking that it’s securely tightened. If the light remains illuminated, the next step is to obtain a diagnostic test from a mechanic or an auto parts store, where they can retrieve error codes from your vehicle’s computer system. These codes will help identify the specific problem that triggered the light. Once you have this information, it’s crucial to address the underlying issue promptly, whether that involves repairs or component replacements. To minimize the chances of the check engine light coming on again, adhere to a regular maintenance schedule, which includes routine oil changes and inspections. This proactive approach not only keeps your Taurus running smoothly but also protects you from potentially costly repairs in the future.

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