Engine Coolant Thermostat Guide for 1993-2000 Ford Taurus
Keep your Taurus engine running at the right temperature by understanding and choosing the correct thermostat.
- A faulty thermostat can cause serious engine damage from overheating or poor performance from running too cold.
- For maximum reliability, choose an OEM Motorcraft thermostat or a premium aftermarket brand like Stant or Gates.
- Always replace the thermostat gasket and inspect the housing for cracks or corrosion during the job.
- A thermostat stuck open is the most common cause of a P0128 check engine light code.
Is Your Taurus Overheating or Running Cold?
A bad thermostat can cause problems that are easy to spot. The most common failures are getting stuck open or stuck closed. If it sticks closed, your engine will overheat quickly, as coolant can't get to the radiator to be cooled. If it sticks open, your engine may take a very long time to warm up, or never reach the correct temperature at all. This can lead to poor heater performance, reduced fuel economy, and a Check Engine Light for code P0128.
Common Failure Symptoms:
- Engine Overheating: The temperature gauge goes into the red. This is the most serious symptom.
- Engine Running Cold: The temperature gauge stays on cold or takes a very long time to move.
- Poor Heater Performance: The heater blows lukewarm or cold air, even when the engine should be warm.
- Temperature Gauge Fluctuates: The needle on the gauge may swing back and forth unexpectedly.
- Check Engine Light: A thermostat stuck open often triggers the P0128 trouble code.
Known Issues for 1993-2000 Ford Taurus
While there are no specific recalls or TSBs for the thermostat itself on this generation of Taurus, the cooling systems, particularly on the 3.0L Vulcan V6, are known for corrosion and sludge buildup. 🎬 Watch this video to troubleshoot common Taurus cooling system issues. This can cause water pumps to fail and heater cores to clog. When replacing your thermostat, it's a good time to flush the cooling system to remove any sediment that could cause the new part to fail prematurely.
Choosing the Right Aftermarket Thermostat
When shopping for a new thermostat, you'll find several brands. The quality can vary, so it's important to choose wisely. For a critical part like this, spending a few extra dollars for a quality brand can save you from doing the job twice.
Brand Quality Tiers
- OEM - Motorcraft: This is the original Ford part. It's the benchmark for fit, quality, and correct temperature rating. For peace of mind and guaranteed compatibility, Motorcraft is the top choice.
- Premium Aftermarket - Stant & Gates: These brands are well-respected and often supply parts directly to car manufacturers. A Stant or Gates thermostat is a reliable, high-quality alternative to OEM. Some users have had good experiences, while others prefer OEM, but they are generally considered dependable choices.
- Standard Aftermarket - Motorad, Facet, Beck Arnley: These brands offer a good balance of value and quality. Motorad is a common parts-store brand. Beck Arnley often re-packages OEM parts, so you might get a high-quality part in their box. Facet is another established brand.
- Performance - Mr Gasket, Mishimoto: These brands are typically for performance or modified vehicles. Mr. Gasket may offer thermostats with different temperature ratings, but for a stock Taurus, it's best to stick with the OEM temperature (usually 192°F or 195°F). Mishimoto is known for high-performance cooling parts, which would be overkill but high quality.
Pro Tip: Always replace the thermostat gasket or seal when you replace the thermostat. Many thermostats come with a new gasket. Also, carefully inspect the thermostat housing for cracks, corrosion, or warping, especially on older vehicles. It's common to replace the housing at the same time.
🎬 See how to replace the thermostat housing on a 3.0L V6.Cost of Replacing a Ford Taurus Thermostat
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Thermostat | $7 - $70 |
| New OEM (Motorcraft) Thermostat | $15 - $40 |
| Shop Labor for Replacement | $100 - $200 |
Frequently Asked Questions
What temperature thermostat should I use for my Taurus?
You should always use the temperature specified by the manufacturer, which is typically 192°F or 195°F for the 1993-2000 Ford Taurus. Using a lower temperature thermostat will not solve an overheating problem and can cause the engine to run too cool, hurting fuel economy and triggering a check engine light.
Should I replace the thermostat housing at the same time?
It's a good idea to inspect it closely. The thermostat housing on these vehicles is typically made of aluminum or plastic and can corrode or crack over time. Since you already have the cooling system drained and the part exposed, replacing a questionable housing is cheap insurance against future leaks.
Do I need to replace the gasket?
Yes, absolutely. Never reuse an old thermostat gasket or seal. Most new thermostats come with the correct gasket. If not, be sure to purchase one separately. Using a new gasket ensures a leak-free seal.
What is a "fail-safe" thermostat?
A fail-safe thermostat is designed to lock in the open position if it fails. This prevents the engine from overheating by allowing coolant to circulate continuously. While this sounds good, some mechanics prefer standard thermostats, arguing that a fail-safe model can mask the initial problem by preventing an obvious overheat, while the engine still runs too cool.
Helpful Videos
Technical Specifications
OEM Part Numbers: YF1Z-8575-BA F5RZ-8575-B F5DZ-8575-A E6DZ8575B
Standard temperature rating is typically 192°F or 195°F. The thermostat is located where the upper radiator hose connects to the engine. The 3.0L Vulcan engine uses a housing with three bolts.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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