Nissan Infiniti 1999: Common Problems & Solutions

Nov 7, 2025 by Admin 50 views

Hey car enthusiasts! Today, we're diving deep into the world of the 1999 Nissan Infiniti, a classic that still turns heads. This guide is your ultimate resource for everything you need to know about this iconic vehicle, from common problems to reliable solutions. Whether you're a seasoned mechanic, a DIY enthusiast, or simply a proud owner, we've got you covered. Let's get started!

Overview of the 1999 Nissan Infiniti

The 1999 Nissan Infiniti represents a significant era in automotive history. It's a vehicle that combined luxury, performance, and reliability, making it a popular choice for many drivers. The Infiniti brand, Nissan's luxury division, aimed to compete with established names like BMW and Mercedes-Benz, and the 1999 models played a crucial role in establishing that reputation. These cars were known for their smooth rides, powerful engines, and upscale interiors. The 1999 Infiniti lineup included several models, each with its own unique features and specifications. Common models available during this year included the G20, I30, Q45, and the newly introduced FX35 and FX45. Each model catered to different segments of the market, offering varying levels of luxury, performance, and practicality. The G20 was the entry-level model, known for its compact size and fuel efficiency. The I30 offered a blend of luxury and performance, with a focus on comfort and style. The Q45 was the flagship sedan, boasting a powerful V8 engine and a host of premium features. The FX35 and FX45 provided a sporty and versatile driving experience, with advanced technologies and a striking design. The 1999 Nissan Infiniti models often featured advanced technologies for their time, such as anti-lock brakes, traction control, and automatic climate control. These features enhanced the driving experience and contributed to the vehicle's overall safety and performance. Moreover, the interiors were designed with comfort in mind, with high-quality materials and thoughtful layouts. Despite their age, these vehicles remain desirable due to their timeless designs, strong performance capabilities, and the prestige associated with the Infiniti brand. Overall, the 1999 Nissan Infiniti lineup offered a diverse range of options, each tailored to meet the needs and preferences of different drivers. Whether you were looking for a luxurious sedan, a sporty coupe, or a practical SUV, there was an Infiniti model to suit your needs.

Notable Features and Specifications

The 1999 Nissan Infiniti models came packed with features and specifications that were quite impressive for their time. The G20, for instance, typically featured a 2.0-liter inline-four engine, delivering a balance of fuel efficiency and performance. Its compact size made it ideal for city driving. The I30 often included a 3.0-liter V6 engine, providing more power and a smoother driving experience. This model was known for its luxurious interior and comfortable ride, making it a favorite for those seeking a blend of performance and comfort. The Q45, the flagship sedan, was powered by a 4.1-liter V8 engine, offering impressive power and acceleration. It was equipped with a range of premium features, including leather upholstery, wood trim, and advanced technology for its time, highlighting its luxury status. The FX35 and FX45, introduced later in the model year, featured a 3.5-liter or 4.5-liter V8 engine, offering a sporty driving experience with a focus on performance and handling. These models often included all-wheel drive and other performance-oriented features, making them popular choices for driving enthusiasts. Transmission options varied depending on the model, but generally included both automatic and manual transmissions, catering to a wide range of driving preferences. The interiors of the 1999 Nissan Infiniti models were designed with luxury in mind, featuring high-quality materials, such as leather, wood trim, and premium audio systems. Many models also included advanced features like automatic climate control, power windows, and sunroofs, enhancing the overall driving experience. In terms of safety, these vehicles were equipped with features like anti-lock brakes, airbags, and traction control systems, providing a solid level of protection for their occupants. These features were quite advanced for the time, demonstrating Infiniti's commitment to safety and innovation. The 1999 Nissan Infiniti models were not only stylish and luxurious, but also technologically advanced for their era. They were designed to provide a premium driving experience, combining performance, comfort, and safety in a well-rounded package.

Common Problems and Solutions

Alright, let's get down to the nitty-gritty. Even though the 1999 Nissan Infiniti is a fantastic car, it's not without its quirks. Here are some of the most common issues you might encounter and how to deal with them:

Engine and Powertrain Issues

One of the most frequent complaints about the 1999 Nissan Infiniti concerns engine performance. Many owners have reported issues like rough idling, engine stalling, and reduced power. These issues can often be traced back to various components. For instance, the mass airflow sensor (MAF) can become dirty or fail, disrupting the air-fuel mixture and causing poor performance. Replacing the MAF sensor is usually a straightforward fix, but it's important to use a high-quality replacement to ensure longevity. Another common culprit is the oxygen sensor, which can degrade over time, leading to reduced fuel efficiency and increased emissions. Replacing the oxygen sensor can often resolve these issues, improving both performance and environmental impact. The ignition system, including spark plugs and ignition coils, can also contribute to engine problems. Worn or faulty spark plugs can cause misfires, leading to rough running and poor acceleration. Replacing the spark plugs and inspecting the ignition coils can often solve these problems, restoring the engine's smooth operation. Additionally, vacuum leaks can lead to a variety of engine performance issues. Checking vacuum lines for cracks or disconnections and repairing or replacing them can often resolve these problems. Proper maintenance, such as regular oil changes and tune-ups, can go a long way in preventing engine and powertrain issues. The 1999 Infiniti models often have robust engines, but they do require regular care to perform at their best. Fuel pump failure is another potential concern, especially in older vehicles. If the fuel pump fails, the engine may not start or run properly. Replacing the fuel pump is often necessary to resolve this issue. Diagnosing these problems typically involves using an OBD-II scanner to read diagnostic trouble codes (DTCs), which can provide valuable clues about the underlying cause of the problem. Consulting a qualified mechanic is always recommended for complex issues, but many of these problems can be addressed with some basic knowledge and the right tools. Proper diagnostics and timely repairs are crucial to maintaining the performance and reliability of the 1999 Nissan Infiniti.

Transmission Problems

Transmission issues can be a headache, and they're something you should be aware of with the 1999 Nissan Infiniti. Common complaints include slipping gears, rough shifting, and complete transmission failure. These problems can be caused by several factors. One of the primary causes of transmission problems is low or contaminated transmission fluid. Regular fluid changes are essential to maintain the health of the transmission. Checking the fluid level and condition is a simple maintenance task that can prevent major problems. If the fluid is low or dirty, a fluid flush and replacement may be necessary. Another common issue is worn or damaged internal components, such as clutch packs or solenoids. These components can degrade over time due to wear and tear. Repairing these internal components can be costly, but it may be necessary to restore proper transmission function. In some cases, a complete transmission rebuild or replacement may be required. Overheating can also damage the transmission. Ensuring the transmission cooler is functioning correctly and avoiding excessive stress on the transmission, such as towing heavy loads, can help prevent overheating issues. Regular maintenance, including fluid changes and inspections, can significantly extend the life of your transmission. Another potential issue is the failure of the valve body, which controls the shifting of gears. Replacing the valve body may be necessary to resolve shifting problems. Proper diagnosis is crucial to determine the exact cause of the transmission issues. If you notice any of these symptoms, it's important to have your transmission inspected by a qualified mechanic as soon as possible. Delaying repairs can lead to more extensive and costly damage. Addressing transmission problems promptly is essential to ensure the longevity and reliability of your 1999 Nissan Infiniti.

Electrical System Failures

Electrical gremlins can be frustrating, and the 1999 Nissan Infiniti is no stranger to these issues. Common problems include malfunctioning power windows, door locks, and problems with the dashboard. Electrical issues can stem from a variety of sources. One of the most common causes of electrical problems is faulty wiring or connections. Wires can corrode or become damaged over time, leading to intermittent or complete failures. Inspecting wiring harnesses and connectors for corrosion or damage is essential to diagnose and repair these issues. Replacing damaged wiring or cleaning and securing connections can often resolve electrical problems. Another common problem is a failing battery or alternator. A weak battery can cause a variety of electrical issues, including problems starting the car and powering electrical components. The alternator is responsible for charging the battery, and if it fails, the battery will eventually drain. Testing the battery and alternator can help diagnose these issues, and replacement may be necessary. Faulty sensors and modules can also contribute to electrical problems. Sensors provide information to the car's computer, and if they fail, it can affect various systems. Modules control various functions, and if they fail, they can cause a range of issues. Diagnosing these problems often requires using a diagnostic scanner to read fault codes and identify the faulty component. Corrosion and oxidation can also be significant contributors to electrical problems. Moisture can enter connectors and cause corrosion, disrupting the flow of electricity. Cleaning connectors and applying a dielectric grease can help prevent corrosion and ensure reliable electrical connections. In some cases, the control modules themselves can fail. Replacing the faulty module is often necessary to resolve these issues. Addressing electrical issues can be challenging, and it's often best to consult a qualified mechanic with the expertise to diagnose and repair these problems. Proper diagnosis and timely repairs are crucial to ensuring the proper function of all electrical systems in your 1999 Nissan Infiniti.

Suspension and Steering Issues

The suspension and steering systems of the 1999 Nissan Infiniti, while designed for comfort and performance, can develop problems over time. Common issues include worn shocks and struts, ball joint failures, and power steering leaks. Worn shocks and struts can lead to a rough ride and reduced handling. Over time, these components lose their ability to absorb road imperfections, resulting in a less comfortable driving experience. Replacing worn shocks and struts can significantly improve ride quality and handling. Ball joint failures can cause clunking noises and instability while driving. Ball joints are crucial for the suspension's movement and stability. Replacing worn ball joints is essential for safety and handling. Power steering leaks can result in reduced power steering assist and potential damage to the power steering pump. Leaks can often be traced to worn hoses or seals. Repairing the leaks and replacing worn components can restore proper steering function. Regular inspections of the suspension and steering components can help identify potential problems early on. Checking for leaks, worn bushings, and unusual noises can help prevent major issues. If you notice any unusual noises or handling issues, it's important to have your suspension and steering systems inspected by a qualified mechanic. Misalignment can also cause handling issues and uneven tire wear. Regular wheel alignments are essential to maintain proper handling and tire life. Maintaining the suspension and steering systems is crucial for both ride comfort and safety. Ignoring these issues can lead to more extensive and costly repairs. Addressing these problems promptly is essential to ensuring a safe and comfortable driving experience in your 1999 Nissan Infiniti.

Troubleshooting and Repair Tips

Okay, so you've got a problem. What now? Here's a breakdown of how to approach troubleshooting and repairs for your 1999 Nissan Infiniti:

Diagnostic Steps

Identify the Problem: Start by pinpointing what's wrong. Is the engine stalling? Are the brakes squealing? The more specific you are, the easier it will be to diagnose. Pay close attention to the symptoms. Note when the problem occurs, under what conditions, and any other relevant details. This information will be crucial for accurate diagnosis. Use your senses: Listen for unusual noises, feel for vibrations, and smell for unusual odors. These observations can provide valuable clues. Check for any warning lights on the dashboard. These lights can indicate specific problems and help narrow down the cause. For example, the check engine light often indicates a problem with the engine or emissions system. The more information you gather upfront, the more efficient your diagnosis will be. Writing down the symptoms can help you remember details that might be important later in the process.
Gather Information: Consult your owner's manual and online resources like forums and repair guides. These sources can provide valuable insights into common problems and potential solutions. Online forums are excellent sources of information. They often contain discussions about common problems and solutions. Repair guides offer detailed instructions for various repairs. The owner's manual provides essential information about your vehicle's systems and maintenance requirements. You can also research the specific make and model of your vehicle to find common issues. This information can help you identify possible causes for the problem you're experiencing.
Perform a Visual Inspection: Look for anything obvious, like leaks, broken wires, or damaged components. Check under the hood and under the vehicle for any visible signs of damage or wear. Inspect all fluids for leaks. Look for any unusual odors or sounds. Check the tires for wear and tear. Inspect the suspension and steering components for damage. Check all hoses and belts for cracks or wear. A thorough visual inspection can often reveal the root cause of the problem.
Use Diagnostic Tools: If you have an OBD-II scanner, use it to read any diagnostic trouble codes (DTCs). DTCs can provide valuable clues about the problem. A multimeter can be used to test electrical components. A compression tester can be used to check engine compression. Other specialized tools may be necessary, depending on the problem. Knowing how to use these tools properly is essential for accurate diagnosis. Diagnostic tools can help you identify the specific component that has failed or is malfunctioning. The information provided by these tools can significantly speed up the troubleshooting process.
Test and Verify: Once you've identified a possible cause, test the component or system to verify the issue. Perform tests to confirm your diagnosis. Replace the faulty component and retest to make sure the problem is solved. Always double-check your work to ensure everything is connected properly and functioning correctly. If you're not sure how to perform a test or repair, consult a professional mechanic. After the repair, road-test the vehicle to ensure the problem is resolved.

DIY vs. Professional Repair

Deciding whether to DIY or take your 1999 Nissan Infiniti to a shop depends on your comfort level, skills, and the complexity of the repair.

DIY: If you're mechanically inclined and have the necessary tools, DIY can save you money. Start with simple repairs and gradually work your way up to more complex tasks. Always prioritize safety and follow proper procedures. Research the repair thoroughly before you begin. Be patient and take your time. There are many online resources, such as YouTube videos and repair manuals, that can provide guidance and instructions. Be prepared to invest in tools if you don't already have them. Consider the time commitment involved. Some repairs can take several hours or even days to complete. If you're unsure about a repair, don't hesitate to seek professional help.
Professional Repair: For complex repairs or if you're not comfortable working on cars, taking your Infiniti to a qualified mechanic is the best option. Choose a reputable shop with experience working on Nissans and Infinitis. Make sure the mechanic is ASE certified. Get a written estimate before authorizing any work. Ask about the warranty on the repairs. Make sure the shop has the necessary tools and equipment. Consider the cost of professional repairs versus the potential cost of making a mistake. Discuss the problem with the mechanic and ask for their recommendations. Don't be afraid to ask questions. A good mechanic will be happy to explain the problem and the repair process.

Essential Tools and Resources

Having the right tools and resources can make a huge difference. Here's what you'll need:

Basic Tools: Wrenches, screwdrivers, pliers, sockets, and a jack and jack stands are essential. These tools will allow you to handle a variety of basic repairs and maintenance tasks. A good set of hand tools is a must-have for any DIY car enthusiast. Make sure you have the right sizes and types of tools for your vehicle. Having a well-organized toolbox can save you time and frustration. Consider a tool cart to keep your tools organized and accessible.
Diagnostic Tools: An OBD-II scanner is crucial for reading codes and diagnosing problems. A multimeter is essential for testing electrical components. Other specialized tools may be necessary, depending on the repair. Research the tools you will need for your specific repairs. Invest in high-quality diagnostic tools for accurate readings. The right diagnostic tools can save you time and money by helping you pinpoint the problem quickly.
Repair Manuals: A repair manual specific to your 1999 Nissan Infiniti is invaluable. Choose a manual that covers your specific model and engine. Repair manuals provide detailed instructions and diagrams. There are many different types of repair manuals available. Online repair manuals are also available and can provide easy access to information and step-by-step instructions. Consider a digital repair manual for easy access on your phone or tablet. Make sure the repair manual is up-to-date and covers all the systems in your vehicle.
Online Resources: Forums, YouTube tutorials, and repair websites are great sources of information. Join online forums dedicated to Nissan and Infiniti vehicles. YouTube is a great resource for visual learners. Repair websites offer step-by-step instructions and diagrams. Many online resources are free, but some may require a subscription. Utilize these resources to learn about common problems and solutions for your vehicle.

Maintaining Your 1999 Nissan Infiniti

Regular maintenance is key to keeping your 1999 Nissan Infiniti running smoothly for years to come. Here's a quick rundown of essential maintenance tasks:

Regular Maintenance Schedule

Oil Changes: Change your oil and filter regularly, following the manufacturer's recommendations. Use the correct type of oil for your engine. Regular oil changes are crucial for engine health and longevity. The frequency of oil changes depends on your driving habits and the type of oil you use. Consult your owner's manual for recommended intervals. Using the correct oil filter is just as important as using the right type of oil.
Fluid Checks: Check and top off all fluids regularly, including coolant, brake fluid, power steering fluid, and transmission fluid. Low fluid levels can cause problems. Keep an eye out for leaks. Inspect all fluids for contamination. Make sure you are using the correct types of fluids for your vehicle. Replace fluids according to the manufacturer's recommendations.
Tire Maintenance: Rotate your tires regularly, check tire pressure, and inspect them for wear. Proper tire maintenance ensures safe and efficient driving. The correct tire pressure is essential for fuel economy and handling. Rotate your tires every 5,000 to 8,000 miles. Check your tires for uneven wear, which can indicate suspension problems.
Brake Inspection: Inspect your brakes regularly, including brake pads, rotors, and calipers. Brake maintenance is essential for safety. Replace worn brake components as needed. Have your brakes inspected by a professional mechanic if you're not comfortable doing it yourself. Worn brakes can lead to reduced stopping power and potential accidents.
Belt and Hose Inspection: Inspect belts and hoses for cracks, wear, and leaks. Replace belts and hoses as needed. Worn belts can break and cause serious engine damage. Leaking hoses can cause fluid loss and engine problems. Regular inspection of belts and hoses can prevent unexpected breakdowns.

Tips for Extending the Life of Your Infiniti

Follow the Maintenance Schedule: Stick to the manufacturer's recommended maintenance schedule. Regular maintenance can prevent major problems. Keep detailed records of all maintenance performed. Use high-quality parts and fluids. Following the maintenance schedule will help keep your 1999 Nissan Infiniti running smoothly for years.
Drive Responsibly: Avoid harsh driving habits, such as hard acceleration and braking. Drive smoothly to reduce wear and tear on your vehicle. Avoid excessive idling, as it can be hard on the engine. Drive defensively to avoid accidents.
Address Problems Promptly: Don't ignore any warning signs or unusual noises. Address any problems as soon as they arise. Delaying repairs can lead to more extensive and costly damage. Get problems diagnosed and repaired by a qualified mechanic. Addressing problems promptly can prevent further damage.
Protect Your Infiniti: Park your car in a garage or under cover to protect it from the elements. Regular washing and waxing can protect the paint. Treat your car with care to extend its life. Consider investing in a car cover. Protect your car from the sun and other environmental factors. Proper care and protection can keep your 1999 Nissan Infiniti looking its best.

Conclusion: Keeping Your 1999 Nissan Infiniti Alive

Owning a 1999 Nissan Infiniti can be a rewarding experience. These cars offer a great blend of luxury, performance, and reliability. By understanding the common problems and solutions, following a regular maintenance schedule, and addressing issues promptly, you can keep your Infiniti running smoothly for years to come. Always prioritize safety, and don't hesitate to seek professional help when needed. Happy driving, and enjoy the classic elegance of your 1999 Nissan Infiniti! Remember to keep up with regular maintenance, address problems promptly, and enjoy the ride! Take pride in owning a piece of automotive history and enjoy the journey with your 1999 Nissan Infiniti!