1999 Acura Integra Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 1999 Acura Integra: Common Causes and Solutions

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Reviewed by
Andrew Hajjar
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 Acura Integra 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 Acura Integra 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 common causes of a check engine light in a 1999 Acura Integra?

When the check engine light illuminates in a 1999 Acura Integra, it can be a source of frustration for DIY car owners. Understanding the common causes can help you diagnose the problem more efficiently. One frequent culprit is the emissions system, which includes components like sensors and the catalytic converter; issues here can lead to increased emissions and trigger the warning light. Additionally, problems with the ignition cylinder can cause irregular engine performance, while a malfunctioning exhaust gas oxygen sensor may result in misfires, particularly during acceleration or at low RPMs. Another potential issue is engine oil leaking from the ignition distributor shaft seal, which can affect engine performance and lead to further complications. Lastly, a faulty ignition coil is a common reason for the check engine light to activate, as it can disrupt the ignition process. If the light remains on after addressing a specific issue, it may indicate a more persistent problem that requires further investigation. By being aware of these common issues, you can take proactive steps to diagnose and resolve the underlying problems, ensuring your Acura Integra runs smoothly.

How urgent is it to address the check engine light on a 1999 Acura Integra?

When the check engine light illuminates on your 1999 Acura Integra, it serves as a crucial warning that should not be overlooked. While Acura vehicles are generally reliable, the appearance of this light can indicate a range of issues, some of which may escalate into serious problems if left unaddressed. For instance, a rapidly flashing check engine light is a clear signal of severe engine misfiring or oil pressure concerns, both of which require immediate attention to prevent further damage. Additionally, symptoms such as low power, cabin shaking, and sluggish acceleration are red flags that suggest compression issues, warranting prompt investigation. Ignoring these warnings can lead to costly repairs and safety risks, making it essential for DIY enthusiasts to act quickly. If the light persists or exhibits erratic behavior, it is advisable to consult a mechanic for a thorough diagnosis, ensuring that your vehicle remains safe and reliable on the road.

What are the initial diagnostic steps to take for a check engine light on a 1999 Acura Integra?

When faced with a check engine light on your 1999 Acura Integra, the first step is to perform a diagnostic test, which can pinpoint the exact issue and save you from unnecessary repairs. If your vehicle is still using the OBD0 system, you can check for trouble codes by observing the ECU's flashes, or if it has been converted to OBD1, you can use a jumper wire to count the flashes of the check engine light. It's crucial to identify and address the underlying problem before resetting the light; this means pulling the trouble codes, fixing the identified issues, and then driving the vehicle to ensure the problem is resolved. If you're unsure about the diagnosis, consider seeking help from a professional mechanic who can provide a thorough assessment. Additionally, look for local shops that offer free diagnostic scans, as this can be a cost-effective way to determine the cause of the check engine light without incurring extra expenses. By following these steps, you can take a proactive approach to diagnosing and resolving the check engine light issue on your Acura.

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