How to Locate and Replace the Coolant Temperature Sensor on a 3.7L Engine on 2005 Jeep Grand Cherokee?

You'll find the Engine Coolant Temperature (ECT) sensor near the back of the generator, placed inside a water jacket at the front of the intake manifold on the 3.7L engine. Balance the cooling system first by taking out enough coolant so that no hot, dangerous pressure remains when you remove the sensor. Following that, remove the electrical connector from the sensor and take out the sensor from the intake manifold. As you install, put a small amount of thread sealant on each sensor thread and return it to the engine. Attach the sensor to the engine pulley at 11 Nm or 8 ft. lbs. of torque, put the electrical connector back in place and add any engine coolant you lost.

OEM 2005 Jeep Grand Cherokee Coolant Temperature Sensor

Coolant Water Temperature Sensor

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2 Coolant Temperature Sensors found

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2005 Jeep Grand Cherokee Coolant Temperature Sensor Part Number: 56027873
$90.13 MSRP: $125.00
You Save: $34.87 (28%)
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Product Specifications
- Other Name: Sensor - Coolant Temperature; Engine Coolant Temperature Sensor; Cooling Fan Temperature Switch; Temperature Sensor; Fan Switch; Temperature Coolant Sensor; Temperature Sending Unit; Sensor Coolant Temperature
- Item Weight: 0.50 Pounds
- Item Dimensions: 1.1 x 1.1 x 2.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 56027873
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
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Fits the following 2005 Jeep Grand Cherokee Submodels:
- 65th Anniversary Edition, Laredo, Limited, Orvis, Overland, Special Edition, Sport, TSi | 6 Cyl 3.7 L GAS, 6 Cyl 4.0 L GAS, 8 Cyl 4.7 L FLEX, 8 Cyl 4.7 L GAS
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2005 Jeep Grand Cherokee Coolant Temperature Sensor Part Number: 5269870AB
$63.79 MSRP: $86.70
You Save: $22.91 (27%)
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Product Specifications
- Other Name: Sensor - Coolant Temperature; Engine Coolant Temperature Sensor; Sender Unit, Coolant Temperature; Temperature Sensor; Temperature Coolant Sensor; Temperature Sending Unit; Sensor Coolant Temperature
- Item Weight: 0.40 Pounds
- Item Dimensions: 0.9 x 1.0 x 2.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5269870AB
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
More Info
Fits the following 2005 Jeep Grand Cherokee Submodels:
- Limited, Overland, SRT8 | 8 Cyl 5.7 L GAS, 8 Cyl 6.1 L GAS

2005 Jeep Grand Cherokee Coolant Temperature Sensor Parts and Q&A

Q: How to Locate and Replace the Coolant Temperature Sensor on a 3.7L Engine on 2005 Jeep Grand Cherokee?
A: You'll find the Engine Coolant Temperature (ECT) sensor near the back of the generator, placed inside a water jacket at the front of the intake manifold on the 3.7L engine. Balance the cooling system first by taking out enough coolant so that no hot, dangerous pressure remains when you remove the sensor. Following that, remove the electrical connector from the sensor and take out the sensor from the intake manifold. As you install, put a small amount of thread sealant on each sensor thread and return it to the engine. Attach the sensor to the engine pulley at 11 Nm or 8 ft. lbs. of torque, put the electrical connector back in place and add any engine coolant you lost.