The 1999 Ford Explorer holds a place in automotive history as a popular SUV that defined an era of increasing demand for versatile family vehicles. While it was well-regarded for its spacious interior, off-road capabilities, and towing power, it has also been criticised for recurring problems. To provide a thorough understanding of this vehicle, this article will further expand on the common issues, offering a deeper analysis and additional details about preventative measures and solutions.
Table of Contents
Overview of the 1999 Ford Explorer
Introduced as part of the Explorer’s second generation (1995–2001), the 1999 model featured modest updates and remained a popular choice for families and adventurers. However, several underlying design flaws and mechanical weaknesses have come to light with age and wear. By understanding these issues, current owners can take proactive steps to maintain their vehicles, and potential buyers can make an informed decision before investing in this SUV.
Transmission Issues: Widespread and Costly
Transmission failures in the 1999 Ford Explorer are among the most severe and widespread problems, often leading to costly repairs. The automatic 5R55E transmission was innovative for its time, but its complexity made it prone to premature wear.
Check Engine Light
Transmission issues often trigger the check engine light, particularly when solenoids malfunction or clutch bands slip. In some cases, the light also coincides with elevated engine RPMs or reduced power, signalling that the transmission is struggling to shift properly.
Erratic Shifting
Some owners reported the vehicle shifting at inappropriate times or skipping gears entirely. This unpredictability can further manifest as sudden lurches or jolts, posing a risk to the transmission and overall drivability if left unaddressed.
Fluid Leaks
Transmission fluid leaks often originate from failing seals or gaskets, exacerbating internal wear. These leaks may appear as reddish-brown puddles under the vehicle and can produce a burning odour if the fluid contacts hot engine components, signalling an urgent need for repair.
Long-Term Impact
Transmission problems lead to complete failure if left unaddressed, leaving the vehicle immobile. Regular maintenance, such as fluid changes every 30,000–60,000 miles, can extend the transmission’s life.
Aftermarket Solutions
Aftermarket transmission components often provide more durability than OEM parts. Reinforced solenoids and upgraded clutch bands can help prevent recurrent issues.
Engine Problems: Longevity Versus Design Flaws
The 4.0-litre SOHC V6 and 5.0-litre V8 engines offer decent performance, but both exhibited specific issues that can significantly affect reliability.
Carbon Build-Up
Over time, carbon deposits accumulate in the intake manifold, reducing performance and causing rough idling or hesitation. Left unchecked, this build-up also lead to misfires or increased emissions, further impacting engine efficiency.
EGR Valve Malfunction
A failing Exhaust Gas Recirculation (EGR) valve causes stalling and reduced fuel efficiency, often triggering a check engine light. In severe cases, this malfunction can lead to excessive engine heat, risking damage to other components.
Blown Head Gaskets
Although less common, blown head gaskets were reported in high-mileage Explorers, leading to coolant leaks, overheating, and engine damage. Symptoms such as white smoke from the exhaust or a milky appearance in the oil often indicate this critical issue, requiring immediate attention to avoid catastrophic engine failure.
Preventative Measures
- Using high-quality fuel and periodically adding fuel system cleaners can reduce carbon build-up.
- Replacing the EGR valve and maintaining the cooling system can mitigate these issues.
- Conducting compression tests during routine inspections can help detect early signs of head gasket failure.
Suspension and Steering Concerns: A Matter of Safety
Suspension and steering issues in the 1999 Ford Explorer impact ride comfort and posed safety risks. These problems are exacerbated by the heavy weight of the vehicle and its frequent use in off-road or towing scenarios.
Shocks and Struts Wear
Worn shocks and struts can result in excessive body roll, making the vehicle unstable during turns or sudden manoeuvres. Over time, this can also lead to uneven tyre wear and increased stopping distances, compromising safety.
Steering Wheel Vibration
Many owners reported vibration in the steering wheel at high speeds, often due to unbalanced tyres, worn tie rods, or steering rack issues. These vibrations can cause premature wear on other suspension components, escalating repair costs if not addressed.
Safety Implications
Failing suspension or steering components can lead to loss of control, especially in emergency braking or evasive situations. This risk is heightened when driving on uneven terrain or during adverse weather conditions, underscoring the need for timely inspections and repairs.
Improvement Options
Upgrading to high-performance shocks, struts, and steering components can enhance the vehicle’s stability and durability. Regular wheel alignments and tyre rotations are essential for preserving suspension integrity.
Electrical System Glitches: Annoyances Turned Challenges
While not as severe as mechanical failures, electrical issues are frustrating for many 1999 Ford Explorer owners. Over time, these electrical glitches can worsen, leading to more costly repairs and decreased vehicle reliability.
Instrument Cluster Failures
Some 1999 Ford Explorer owners may experience complete instrument cluster failures, where essential components like speedometers, fuel gauges, and odometers stop functioning altogether. This malfunction not only makes it difficult for drivers to monitor vehicle performance but also poses safety concerns in terms of speed monitoring. In some cases, the issue can be traced to faulty connections, damaged circuits, or issues with the instrument cluster’s internal components, which require replacement or repairs.
Battery Drainage
Battery drainage is another common electrical issue that plagued many owners of the 1999 Ford Explorer. This problem is often caused by electrical shorts, faulty alternators, or ageing wiring. As the electrical system ages, it becomes more prone to wear and tear, leading to erratic charging and battery drain.
In some cases, the issue can be tied to parasitic drains, where electrical components continue drawing power from the battery even when the vehicle is off. Addressing this issue early can prevent unexpected breakdowns and the need for costly battery replacements.
Faulty Cruise Control
The cruise control system in many 1999 Ford Explorers is known for its intermittent operation or even complete failure. Owners frequently reported that the cruise control would either not activate or disengage without warning while driving. This malfunction is often linked to electrical issues such as faulty wiring or problems with the cruise control module. Although it is generally not a safety concern, it can be inconvenient and frustrating, particularly on long drives.
Preventative Solutions
To avoid the electrical issues that commonly arise in the 1999 Ford Explorer, inspect and replace corroded or damaged wiring regularly. Worn or frayed wires can cause shorts and other problems that affect the entire electrical system. Installing a high-quality alternator ensures stable electrical output, preventing battery drain and supporting the overall health of the electrical system. Finally, using a multimeter to diagnose and address potential shorts in the electrical system help identify and resolve issues early, saving owners from costly repairs in the future.
Fuel System Troubles: From Efficiency to Reliability
The fuel system in the 1999 Ford Explorer had its quirks, with issues ranging from minor inefficiencies to significant malfunctions that could affect the vehicle’s performance and fuel economy. As fuel delivery is crucial for smooth engine operation, even small problems within the fuel system can lead to bigger issues down the road.
Fuel Tank Issues
One common problem faced by owners of the 1999 Ford Explorer is rust or debris accumulating in the fuel tank. Over time, the tank’s interior can corrode, leading to the contamination of the fuel and clogging of the fuel lines. This contamination often results in damaged injectors, further affecting the performance of the engine. In some cases, rust particles or debris can restrict fuel flow, leading to stalling or poor engine performance.
Fuel Pressure Regulator Failures
Another common fuel system issue in the 1999 Ford Explorer is fuel pressure regulator failure. A malfunctioning fuel pressure regulator can cause inconsistent fuel delivery, resulting in rough starts or even a loss of power during acceleration. When the regulator does not maintain the correct pressure, the engine may receive too much or too little fuel, leading to inefficient combustion. This issue often leads to poor driving performance, reduced fuel economy, and, eventually, increased engine wear if not addressed.
Long-Term Impacts
If left untreated, fuel system problems in the 1999 Ford Explorer can lead to more severe damage, such as the need to replace the entire fuel delivery system. Neglecting regular fuel system maintenance results in the accumulation of dirt and debris in the fuel tank, as well as more significant wear and tear on fuel lines, injectors, and the fuel pump.
Extensive repairs can be costly, and it would often be necessary to replace multiple components within the fuel system. Keeping the system in top shape through preventive measures is crucial for long-term vehicle reliability.
Preventative Maintenance
To avoid the costly and time-consuming repairs associated with fuel system issues, preventative maintenance is key. Using high-quality fuel helps reduce the likelihood of debris and contaminants building up in the fuel tank, thus preventing clogging in the lines and injectors.
Periodically inspecting the fuel tank, lines, and injectors for signs of damage or contamination is essential in preventing small issues from turning into expensive repairs. Additionally, regularly replacing the fuel filter is crucial for keeping the fuel system clean and ensuring that only clean fuel reaches the engine, promoting better performance and longevity.
Rust and Corrosion: A Persistent Enemy
Rust and corrosion are inevitable challenges for any vehicle, especially those as old as the 1999 Ford Explorer. Over time, exposure to the elements, road salt, and general wear and tear can accelerate the degradation of a vehicle’s body and components. The 1999 Explorer had certain design elements that made it particularly vulnerable to rust, and if left unchecked, it could lead to serious structural and performance issues.
Frame Rust
One of the most concerning issues for the 1999 Ford Explorer is advanced rust on the frame. Over time, the frame can suffer from severe corrosion, particularly in areas exposed to moisture and road salt.
Frame rust compromises the vehicle’s structural integrity, potentially making the vehicle unsafe to drive. As the frame weakens, it can affect the alignment, suspension, and overall safety of the vehicle. Regularly inspecting the frame, particularly in rust-prone areas, is essential to catch problems before they become dangerous.
Exhaust System Corrosion
The exhaust system of the 1999 Explorer was also susceptible to corrosion, particularly in regions with harsh winters or high humidity. Rusted exhaust components lead to increased emissions, as they might no longer effectively filter out harmful gases. Corrosion can also reduce performance, causing exhaust leaks that affect the engine’s power and efficiency. The rusting of critical components like the catalytic converter or muffler can result in costly repairs if not addressed in a timely manner.
Door Hinges and Latches
Another common issue is rust on the door hinges and latches. Over time, exposure to rain, snow, and road salt can cause the hinges to rust, resulting in sagging doors that may fail to close properly. Rusted latches can also make it difficult to open or close the doors securely, leading to potential safety risks. Regular maintenance and lubrication of door components, along with rust prevention measures, help mitigate these issues and keep the vehicle functioning properly.
Long-Term Protection
To ensure the 1999 Ford Explorer remains free from the damaging effects of rust and corrosion, long-term protection is essential. Applying rustproofing treatments to the undercarriage and bodywork can create a barrier that prevents moisture from penetrating the metal. Regular inspections of critical areas like the frame, exhaust system, and door components can help identify rust early before it leads to more significant damage. Rust converters and high-quality paint can be used to treat existing rust and prevent it from spreading. Regularly addressing rust and corrosion not only extends the vehicle’s lifespan but also helps maintain its safety and performance.
Brake System Deficiencies: Safety at Risk
The brake system in the 1999 Ford Explorer is generally adequate for everyday driving, but it shows weaknesses under more demanding conditions such as heavy braking or towing. These weaknesses can compromise vehicle safety, particularly in emergency situations or when carrying heavy loads. While the system works well for regular driving, it requires attention in certain areas to ensure that the vehicle can perform optimally under stress and maintain driver confidence.
ABS Sensor Failures
One of the most common brake-related issues in the 1999 Ford Explorer was ABS sensor failures. The Anti-lock Braking System (ABS) is designed to prevent the wheels from locking up during hard braking, helping the driver maintain control.
However, some vehicles experienced sensor malfunctions, causing the ABS warning lights to illuminate on the dashboard. This malfunction can reduce the effectiveness of the ABS system, potentially compromising safety during emergency braking.
Brake Line Corrosion
Another significant problem is brake line corrosion, especially in areas with harsh winters where road salt and moisture contribute to rust. Over time, brake lines rust, which leads to reduced braking efficiency or even brake fluid leaks. This corrosion weakens the entire brake system, increasing the risk of brake failure. In severe cases, it can even lead to a complete loss of braking power.
Preventative Measures
To prevent brake system deficiencies in the 1999 Ford Explorer, it is crucial to perform routine brake inspections to check for wear and potential issues such as corrosion or faulty sensors. Flushing the brake fluid every two to three years helps maintain the system’s efficiency and ensures that the fluid doesn’t become contaminated. Additionally, using corrosion-resistant brake lines can greatly reduce the risk of rust and leaks, ensuring the braking system remains functional and safe.
Interior Quality and Wear: Aesthetic and Functional Issues
As the 1999 Ford Explorer ages, its interior components begin to show signs of wear and tear, often detracting from the overall driving and ownership experience. Many owners reported that the vehicle’s interior lost its original appeal over time, with components becoming less functional or aesthetically pleasing.
Electrical Seat Malfunctions
One common issue in the 1999 Ford Explorer is the failure of electrical seat adjustments. Over time, the motors responsible for adjusting the power seats will fail, and worn switches can cause the seat controls to become unresponsive. This malfunction makes it difficult for drivers and passengers to adjust their seating positions, leading to discomfort.
Plastic Trim Breakage
Another aesthetic issue is the breakage of plastic trim pieces in the cabin. The cheap plastic trim on the dashboard, doors, and centre console is prone to cracking or breaking over time, especially with frequent use or exposure to extreme temperatures. These broken pieces not only detract from the vehicle’s appearance but can also lead to safety hazards if sharp edges are exposed.
Upgrades and Repairs
To improve the condition of the 1999 Ford Explorer’s interior, investing in aftermarket interior components or refurbishing existing parts is a great way to enhance the cabin’s comfort and aesthetic appeal. Installing seat covers or sunshades helps preserve the integrity of the seats and upholstery, reducing wear and tear. Additionally, replacing cracked trim pieces with more durable materials or opting for a more modern interior upgrade can breathe new life into the vehicle’s cabin.
General Ageing Concerns
Finally, many of the 1999 Explorer’s issues stem from its age. Vehicles over two decades old inevitably face challenges such as wear and tear on seals, hoses, and mounts.
Proactive Maintenance
- Replace ageing rubber components like hoses and belts to prevent unexpected failures.
- Regularly inspect the vehicle for leaks, odd noises, or unusual behaviour, which can indicate underlying problems.
Conclusion
The 1999 Ford Explorer is a vehicle that reflects its era—offering solid performance and practicality while revealing vulnerabilities over time. For owners, the key to extending the vehicle’s lifespan lies in regular maintenance and addressing issues promptly. Understanding these common problems for prospective buyers can help you assess whether the Explorer aligns with your expectations and repair budget.
With proper care and attention, the 1999 Ford Explorer can still be a reliable and capable vehicle, showcasing the durability that made it a staple in its class. However, awareness of its shortcomings is essential for an optimal ownership experience.