Chrysler Sebring Engine Coolant Temperature Sensor Guide (1995-2010)
Is your Sebring running rough, getting bad gas mileage, or overheating? A bad coolant sensor could be the culprit.
- A bad ECT sensor will usually trigger a Check Engine Light with codes P0117 or P0118.
- Symptoms include poor fuel economy, rough idle, black smoke, and potential engine overheating.
- Replacement is simple and can be done at home with basic tools in under an hour.
- For best results, choose a quality aftermarket brand like Delphi, NGK, or Standard Motor Products over the cheapest option.
Is Your Sebring's Coolant Sensor Failing?
A faulty Engine Coolant Temperature (ECT) sensor can cause a surprising number of problems in your 1995 to 2010 Chrysler Sebring. Because the engine's computer relies on this sensor for critical information, a bad signal can lead to poor performance and even leave you stranded. Ignoring the signs can lead to more significant engine problems down the road.
Common Symptoms of a Bad ECT Sensor
If your Sebring's ECT sensor is going bad, you'll likely notice one or more of these issues:
- Check Engine Light: This is often the first sign. The computer will log a fault code, typically P0117 (Circuit Low) or P0118 (Circuit High) 🎬 Watch: A detailed diagnosis of P0117 and P0118 codes., when it detects a problem with the sensor's signal.
- Poor Fuel Economy: If the sensor incorrectly tells the computer the engine is cold, the system will enrich the fuel mixture, causing your car to use more gas than necessary.
- Black Smoke from Exhaust: A very rich fuel mixture, caused by a failed sensor sending a constant 'cold' signal, can result in unburnt fuel burning in the exhaust, creating black smoke.
- Engine Overheating: A faulty sensor might fail to signal the computer to turn on the cooling fans when needed, leading to the engine overheating. Conversely, the fans might run all the time, even when the engine is cold.
- Rough Idling or Hard Starting: The wrong fuel mixture can make the engine difficult to start, especially when warm, and can cause a shaky or unstable idle.
A Note on Recalls
While there are no direct recalls for the ECT sensor itself, a notable recall (NHTSA ID: 07V441000) was issued for some 2007-2008 Sebring models with the 2.4L engine. This recall addresses an issue where engine coolant could leak and be drawn into the radiator fan motor connector, causing a short circuit and potential fire risk. This highlights the importance of addressing any coolant system issues promptly.
Choosing the Right Aftermarket Sensor
When replacing the ECT sensor, you don't have to buy the expensive Mopar part to get good quality. Many aftermarket brands provide reliable parts, but they are not all created equal. Here’s a breakdown of your options:
- Tier 1 (OEM Equivalent): Brands like Mopar (the original part), NGK/NTK, and Delphi are excellent choices. Delphi and NGK are often original equipment suppliers to many car manufacturers, and their sensors are known for accuracy and durability. You can expect OEM-level performance from these brands.
- Tier 2 (Professional-Grade Aftermarket): Standard Motor Products (SMP) and Beck Arnley have long been trusted names in the aftermarket. They offer quality parts that meet or exceed OEM specifications. While some of their parts may be sourced from various manufacturers, they generally provide a reliable, cost-effective alternative to the dealer part.
- Tier 3 (Economy): Brands like True Tech, Global Parts, and other unbranded or store-brand sensors fall into this category. While very affordable, their quality and longevity can be inconsistent. These are best suited for a budget repair, but be aware that you might be replacing it again sooner than you would with a higher-tier brand.
Pro Tip: For critical sensors like the ECT, spending a few extra dollars on a Tier 1 or Tier 2 brand is a wise investment. The reliability of brands like Delphi, NGK, or Standard Motor Products often justifies the small price difference over an economy part.
Cost of Replacing a Sebring ECT Sensor
| Part Type | Typical Cost |
|---|---|
| New Aftermarket ECT Sensor | $10 - $118 |
| New OEM (Mopar) ECT Sensor | $45 - $90 |
| Shop Labor for Replacement | $60 - $120 |
Frequently Asked Questions
Where is the ECT sensor located on my Chrysler Sebring?
The location varies by engine. For the 2.7L V6, it's on the coolant outlet housing at the top of the engine. 🎬 See this walkthrough for replacing the 2.7L sensor housing. For 3.5L engines, it's near the throttle body. For 2.4L engines, it's often found on the thermostat housing or cylinder head. 🎬 Watch: How to locate and replace the 2.4L sensor. Always follow the upper radiator hose to the engine block to help locate the thermostat housing, where the sensor is typically threaded.
Can I replace the ECT sensor myself?
Yes, this is a very DIY-friendly job for most home mechanics. It usually requires basic hand tools, like a deep socket or a crowfoot wrench. The main steps are draining some coolant, disconnecting the electrical connector, unscrewing the old sensor, and installing the new one. Just be sure the engine is cool before you start to avoid burns.
What happens if I don't replace a bad coolant sensor?
Continuing to drive with a faulty ECT sensor can cause a range of issues. You'll likely experience poor fuel economy and rough engine performance. More seriously, if the sensor fails to report an overheating condition, you risk severe and expensive engine damage, such as a warped cylinder head or blown head gasket.
Is it the sensor or the thermostat?
It can be tricky to tell. A stuck-closed thermostat will cause definite overheating. A stuck-open thermostat will cause the engine to warm up very slowly and the temp gauge may read low. A bad sensor can cause either of these symptoms on the gauge, plus the Check Engine Light and performance issues. If you get a specific ECT sensor code (like P0117 or P0118), the sensor or its wiring is the most likely culprit.
Helpful Videos
Technical Specifications
OEM Part Numbers: 5269870AB 33004281 5149077AB
Typically a two-wire thermistor sensor with a threaded body and a plastic electrical connector. The connector type and thread pitch can vary by engine and year, so verifying the correct part for your specific Sebring is essential.
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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