Ford Police Interceptor Sedan – The Ultimate Guide To Buying, Tuning
The Ford Police Interceptor Sedan is a purpose-built pursuit vehicle offering heavy-duty performance and all-wheel-drive stability. This guide provides actionable insights for owners looking to maintain or modify these retired cruisers for daily driving or performance use.
You have probably seen them in your rearview mirror or sitting at a local government auction. The ford police interceptor sedan, often abbreviated as the FPIS, is far more than just a Ford Taurus with a black-and-white paint job.
If you are looking for a rugged, high-performance sleeper that can handle more abuse than a standard family car, you are in the right place. We will explore what makes these cars unique and how you can keep yours running at peak performance.
This guide covers everything from the heavy-duty cooling systems to the specific mechanical pitfalls you need to avoid. Whether you are a weekend DIYer or a performance enthusiast, these insights will help you master the Interceptor platform.
Why Enthusiasts Love the ford police interceptor sedan
Most car buyers overlook the FPIS because they see it as a “used cop car,” but enthusiasts know better. These vehicles were designed to survive high-speed pursuits, curb-hopping, and thousands of hours of idling while powering heavy electronics.
Unlike the civilian Taurus, the Interceptor comes standard with a heavy-duty suspension, upgraded brakes, and a cooling package designed for extreme duty. Most models also feature a torque-vectoring All-Wheel Drive (AWD) system that provides incredible grip in various weather conditions.
The interior is also built for durability, featuring easy-to-clean vinyl floors and front seats designed to accommodate a duty belt. For the DIY mechanic, this means a car that is structurally reinforced and ready for modifications that would break a standard sedan.
The Powerhouse Engines
Most of these sedans come with one of two engines: the 3.7L Ti-VCT V6 or the 3.5L EcoBoost Twin-Turbo V6. The 3.7L is a reliable workhorse, while the EcoBoost variant turns the sedan into a 365-horsepower beast.
Both engines are paired with a 6-speed SelectShift automatic transmission that is calibrated for aggressive shifting. This powertrain setup allows the car to reach 60 mph in under six seconds, making it a formidable sleeper car on the road.
Essential Pre-Purchase Inspection Tips
When buying a retired ford police interceptor sedan, you cannot rely on the odometer alone. Police vehicles spend a massive amount of time idling, which causes wear on the engine that mileage does not reflect.
Check the “Idle Hours” on the digital dashboard display; one hour of idling is roughly equivalent to 33 miles of driving. A car with 80,000 miles but 5,000 idle hours has effectively traveled over 240,000 miles in terms of engine wear.
Inspect the roof and trunk for plugged holes where light bars and antennas were once mounted. Ensure these are sealed with silicone or professional plugs to prevent water leaks that can ruin the interior or cause electrical shorts.
Checking the PTU and Cooling System
The Power Transfer Unit (PTU) is the most common failure point on the AWD Interceptor models. The PTU sits near the exhaust, causing the lubricant to cook and turn into a thick sludge over time.
Ask for service records to see if the PTU fluid was changed, even though Ford originally called it a “lifetime” fluid. If the fluid smells burnt or looks like black paste, you may be looking at an expensive replacement in the near future.
Next, inspect the water pump, which is internally driven by the timing chain on these engines. If you see coolant weeping from the weep hole behind the alternator, the pump is failing and must be replaced immediately to avoid engine destruction.
Maintenance Tasks for the DIY Mechanic
Owning a ford police interceptor sedan requires a proactive approach to maintenance to keep it reliable. Because these cars were driven hard, you should follow the “Severe Duty” maintenance schedule found in the owner’s manual.
Start by changing all fluids, including the engine oil, transmission fluid, and the rear differential gear lube. Use a high-quality full synthetic oil to protect the turbochargers if you have the EcoBoost model.
Check the heavy-duty brake pads and rotors, as police-spec brakes are designed for high-heat dissipation. If you notice a pulsation in the pedal, the rotors may be warped from intense heat cycles and should be replaced with OEM-spec parts.
Upgrading the Suspension Components
The Interceptor uses larger-diameter struts and stiffer springs compared to the civilian Taurus. Over time, the bushings and ball joints can wear out due to the weight of the police equipment and aggressive driving.
Inspect the rear control arms and the front lower control arms for any cracks in the rubber bushings. Replacing these with polyurethane bushings can further sharpen the handling and improve steering response during cornering.
Don’t forget the tires; most Interceptors come with Goodyear Eagle RS-A or similar pursuit-rated tires. Ensure your tires have a speed rating that matches the vehicle’s capability, especially if you plan on spirited driving.
Common Problems and How to Fix Them
Even though the ford police interceptor sedan is built tough, it has a few “Achilles heels” that every owner should know. Electrical issues are common because upfitters often cut wires when removing police equipment.
If your dome lights or radio act strangely, inspect the wiring harness under the center console and behind the dash. Look for exposed copper or “vampire clips” that might be causing a parasitic drain on your battery.
Another common issue is the cooling fan assembly, which can fail after years of idling in hot parking lots. If your engine temperature rises while sitting at a stoplight, the fan motors are likely burnt out and need a quick replacement.
Managing the Internal Water Pump Risk
The internal water pump is the most debated topic among Interceptor owners because a failure can mix coolant with oil. This cross-contamination will destroy the engine bearings in a matter of minutes if not caught early.
Check your oil dipstick weekly for any signs of a “milky” substance, which indicates coolant intrusion. If you plan on keeping the car long-term, consider preventative replacement of the water pump and timing chain every 120,000 miles.
While this is a labor-intensive job, it is much cheaper than replacing the entire 3.5L or 3.7L engine. Always use a genuine Motorcraft pump to ensure the seals meet the original factory specifications.
Performance Modifications for Enthusiasts
The ford police interceptor sedan is an incredible platform for performance tuning, especially the EcoBoost models. A simple ECU reflash can unlock significant horsepower and torque by increasing boost pressure.
Upgrading the intercooler is a smart move if you live in a warm climate, as the factory unit can heat soak quickly. A larger front-mount intercooler will keep intake temperatures down and provide consistent power during hard acceleration.
For better breathing, consider a high-flow intake system and a less restrictive exhaust. However, keep in mind that these cars are already highly optimized from the factory, so focus on cooling and efficiency first.
Customizing the Interior for Civilian Use
Many retired cruisers come with a “street appearance package,” but others have a bare-bones interior with a hole in the console. You can easily swap in a civilian Taurus center console to add cup holders and armrest storage.
If your car has the “Dark Mode” enabled (where lights don’t turn on when doors open), you will need a FORScan adapter. This software allows you to toggle factory settings and re-enable standard lighting and chime behaviors.
You can also replace the rear vinyl seat with a cloth or leather seat from a donor Taurus at a junkyard. This simple swap makes the cabin much more comfortable for passengers and improves the overall aesthetic of the car.
Safety Considerations and Road Legality
Driving a ford police interceptor sedan comes with the responsibility of ensuring it is legal for civilian use. You must remove all police decals, sirens, and flashing lights before taking it on public roads.
In some jurisdictions, you may even need to remove the “A-pillar” spotlight or disable it to pass inspection. Always check your local state laws regarding the use of former emergency vehicles to avoid unnecessary fines.
Additionally, be aware that some Interceptors come with ballistic door panels designed to stop handgun rounds. These panels add significant weight to the doors, which can cause the hinges to sag or wear out prematurely over time.
Handling and Braking Safety
Because the FPIS is heavier than a standard sedan, your stopping distances and cornering limits are different. The AdvanceTrac stability control is tuned specifically for this weight, so do not disable it during normal driving.
If you perform a brake job, always use high-temperature brake fluid (DOT 4) to prevent boiling during heavy use. Safety is paramount when driving a vehicle that was engineered for high-speed duty in unpredictable environments.
Frequently Asked Questions About ford police interceptor sedan
Is the Ford Police Interceptor Sedan the same as a Taurus?
While it shares the same chassis, the Interceptor has a reinforced frame, heavy-duty cooling, upgraded suspension, and a unique AWD system. It is essentially a heavy-duty version of the Taurus SHO or SEL models.
How can I tell if my Interceptor has the EcoBoost engine?
Look at the VIN; if the 8th character is a “T,” it features the 3.5L EcoBoost twin-turbo engine. You can also check for the intercooler piping located behind the lower front grille of the vehicle.
Does the Ford Police Interceptor Sedan have a top speed limiter?
Yes, most are electronically limited to 131 mph or 150 mph, depending on the specific tire and engine package. These limits are set to ensure the driveline components stay within safe operating temperatures during high-speed use.
Are parts expensive for the FPIS?
Most mechanical parts are shared with the Ford Taurus, making them relatively affordable and easy to find at local parts stores. However, police-specific items like heavy-duty cooling fans or specialized suspension components may cost slightly more.
Can I use regular gas in my Interceptor?
While the 3.7L can run on regular 87 octane, the EcoBoost 3.5L performs best on 91 or 93 octane. Using premium fuel prevents engine knock and allows the turbochargers to provide maximum power output.
Final Thoughts for the Interceptor Owner
Owning a ford police interceptor sedan is a unique experience that combines utility, durability, and surprising performance. By staying on top of the PTU fluid changes and monitoring the water pump, you can enjoy this cruiser for many years.
Remember that these cars were built to serve, and with the right maintenance, they will continue to serve you reliably. Whether you use it as a rugged daily driver or a track-day sleeper, the FPIS remains one of the best values on the used market.
Take pride in your DIY repairs, keep the cooling system healthy, and enjoy the confidence that comes with driving a pursuit-rated machine. Stay safe and enjoy the open road in your heavy-duty sedan!
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