How to Service and Repair a Coolant Temperature Sensor on Mercury Marauder?

The service of Engine Coolant Temperature (ECT) Sensor begins with draining the cooling system. A technician should disconnect the ECT sensor electrical connector after which they should remove the sensor from its location. Reverse the removal procedure while applying sealant to the ECT sensor threads before reattaching it to its position. The service ends with filling and bleeding the cooling system.

How to Service and Repair a Coolant Temperature Sensor on Mercury Grand Marquis?

Installation of an engine temperature sensor requires first slowing down the fire suppression system (if present) then taking away the intake manifold. When removing the cylinder head temperature (CHT) sensor it is natural for the tip to show slight compression. Interfere with the CHT electrical connector and take out the CHT sensor so discard it for non-recyclability while you install a brand-new sensor. Reinstall the new sensor and follow the reverse steps of removal alongside repowering the fire suppression system when it was depowered.

How to Service the Coolant Temperature Sensor on Mercury Mountaineer?

Disconnection of the battery ground cable and draining the cooling system stands as the first step for servicing ECT Sensors. You should follow the picture and table illustration while removing components according to their specified order. Reinstallation should be done backwards to the removal process while performing coolant system filling and bleeding procedures.

OEM Mercury Coolant Temperature Sensor

Coolant Water Temperature Sensor

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20 Coolant Temperature Sensors found

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Mercury Coolant Temperature Sensor
Part Number: 9U2Z-12A648-A
$32.23 MSRP: $51.18
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Product Specifications
- Other Name: Sender Assembly; Engine Coolant Temperature Sensor; Temperature Switch; Temperature Sending Unit; Sensor
- Replaces: F4TZ-12A648-A, F2AZ-12A648-A, F2AZ-12A648-AA, F1AZ-12A648-B, E1AZ-12A648-A
Fits the following Mercury Models:
- Colony Park | 1987-1991 | GS, LS | 8 Cyl 5.0 L GAS
- Cougar | 1992-1995 | LS, XR-7 | 6 Cyl 3.8 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
- Grand Marquis | 1984-2006 | Base, Colony Park, GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
- Mystique | 1995 | Base, GS, GS Spree, LS, LS Young America | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- Sable | 1992-1994 | GS, LS | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Topaz | 1992-1994 | GS, LS, LTS, Sport, XR5 | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
- Tracer | 1991-1996 | Base, Trio | 4 Cyl 1.9 L GAS
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Mercury Sending Unit
Part Number: F5RZ-10884-B
$27.26 MSRP: $37.09
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Product Specifications
- Other Name: Sender Assembly - Temperature; Engine Coolant Temperature Sender; Coolant Temperature Sender; Coolant Temperature Sensor; Temperature Sending Unit
- Manufacturer Note: Single terminal, 2.5 liter
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base, S, V6 | 6 Cyl 2.5 L GAS
- Mystique | 1995-2000 | Base, GS, GS Spree, LS, LS Young America | 6 Cyl 2.5 L GAS
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Mercury Coolant Temperature Sensor
Part Number: F8CZ-12A648-B
$30.10 MSRP: $47.80
You Save: $17.70 (38%)
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Product Specifications
- Other Name: Sender Assembly; Engine Coolant Temperature Sensor; Temperature Sensor
- Replaces: F77Z-12A648-AA, F8CZ-12A648-AA, DY-824
Fits the following Mercury Models:
- Milan | 2006-2009 | Base, Premier | 4 Cyl 2.3 L GAS
- Mountaineer | 2002-2004, 1998-2000 | Base, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Temperature Gauge
Part Number: F1SZ-10884-A
$34.69 MSRP: $55.09
You Save: $20.40 (38%)
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Product Specifications
- Other Name: Sender Assembly - Temperature; Engine Coolant Temperature Sender; Temp Gauge; Temperature Sending Unit; Temperature Gauge Sending Unit; Temperature Sender Unit
- Replaces: DOWY-10884-A
Fits the following Mercury Models:
- Colony Park | 1990-1991 | GS, LS | 8 Cyl 5.0 L GAS
- Cougar | 1992-1997 | LS, XR-7 | 6 Cyl 3.8 L GAS, 8 Cyl 4.6 L GAS
- Grand Marquis | 1990-1995 | GS, LS | 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
- Sable | 1992-1996 | G, GS, LS, LTS | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Topaz | 1992-1994 | GS, LS, LTS, Sport, XR5 | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
- Tracer | 1991-1994 | Base, Trio | 4 Cyl 1.9 L GAS
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Mercury Coolant Temperature Sensor
Part Number: E1AZ-12A648-A
$32.23 MSRP: $51.18
You Save: $18.95 (38%)
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Product Specifications
- Other Name: Sender Assembly; Engine Coolant Temperature Sensor; Multi Purpose Relay; Fog Light Bulbs; Valve Keeper; Car Bulbs; Temperature Sending Unit; ECM Relay; Temperature Gauge Sending Unit; Inner Bearing; Fog Lamp Bulb
- Replaced by: 9U2Z-12A648-A
Fits the following Mercury Models:
- Cougar | 1984-1991 | Base, LS, XR-7 | 4 Cyl 2.3 L GAS, 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS
- Lynx | 1984-1987 | Base, GL, GS, L, LS, LTS, RS, XR3 | 4 Cyl 1.6 L GAS, 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L DIESEL
- Marquis | 1984-1986 | Base, Brougham | 4 Cyl 2.3 L GAS, 4 Cyl 2.3 L LPG, 6 Cyl 3.8 L GAS
- Sable | 1986-1991 | GS, LS | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Topaz | 1984-1991 | Base, GS, GS AWD, LS, LS AWD, LTS, LTS AWD, Sport, Sport AWD, XR5, XR5 AWD | 4 Cyl 2.0 L DIESEL, 4 Cyl 2.3 L GAS
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Mercury Coolant Temperature Sensor
Part Number: 3L8Z-12A648-AA
$53.26 MSRP: $87.64
You Save: $34.38 (40%)
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Product Specifications
- Other Name: Sensor - Engine Coolant Temperature; Engine Coolant Temperature Sensor; Air Temperature Sensor; HVAC System Switch; Temperature Sensor; Sensor
- Manufacturer Note: Rectangular connector with 2 flat pins, DOHC
Fits the following Mercury Models:
- Mariner | 2008 | Base, Premier | 6 Cyl 3.0 L GAS
- Milan | 2006-2009 | Base, Premier | 6 Cyl 3.0 L GAS
- Sable | 2003-2005 | LS, LS Premium, Platinum Edition | 6 Cyl 3.0 L GAS
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Mercury Coolant Temperature Sensor
Part Number: 3L8Z-12A648-A
$29.78 MSRP: $47.29
You Save: $17.51 (38%)
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Product Specifications
- Other Name: Sender Assembly; Engine Coolant Temperature Sensor; Temperature Sensor; Temperature Switch; Sensor
- Replaces: 3L8Z-12A648-BA, DY-1004
Fits the following Mercury Models:
- Mariner | 2005-2006 | Base, Convenience, Hybrid, Luxury, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
- Montego | 2005-2007 | Luxury, Premier | 6 Cyl 3.0 L GAS
- Mountaineer | 2001-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Coolant Temperature Sensor
Part Number: 3F1Z-12A648-A
$23.00 MSRP: $36.53
You Save: $13.53 (38%)
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Product Specifications
- Other Name: Sender Assembly; Engine Coolant Temperature Sensor; Air Temperature Sensor; HVAC System Switch; Temperature Sensor; Temperature Switch; Level Sensor; Temperature Sending Unit; Temperature Gauge Sending Unit; Sensor
- Replaces: F5AZ-12A648-AB, F5AZ-12A648-A
Fits the following Mercury Models:
- Cougar | 1999-2002, 1996-1997 | Base, S, V6, XR-7 | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS, 6 Cyl 3.8 L GAS
- Mariner | 2008-2011 | Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV)
- Monterey | 2004-2007 | Base, Convenience, Luxury, Premier | 6 Cyl 4.2 L GAS
- Mountaineer | 2006-2010, 1997-2001 | Base, Luxury, Premier | 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
- Mystique | 1996-2000 | GS, LS | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- Sable | 1996-2002 | G, GS, LS, LS Premium | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- Tracer | 1997-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Temperature Sensor
Part Number: 3F1Z-10884-AA
$28.97 MSRP: $46.00
You Save: $17.03 (38%)
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Product Specifications
- Other Name: Sender Assembly - Temperature; Engine Coolant Temperature Sensor; Temp Sender Gauge.; Sending Unit; Temperature Sending Unit; Temperature Gauge Sending Unit
- Replaces: XS2Z-10884-AA
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
- Sable | 2003 | LS, LS Premium | 6 Cyl 3.0 L GAS
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Mercury Temperature Sending Unit
Part Number: DOZZ-10884-A
$86.19 MSRP: $141.82
You Save: $55.63 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sender Assembly - Temperature; Coolant Temperature Sender; Temperature Gauge Sending Unit
Fits the following Mercury Models:
- Cougar | 1985-1986 | XR-7 | 4 Cyl 2.3 L GAS
- Lynx | 1984-1987 | Base, GL, GS, L, RS, XR3 | 4 Cyl 2.0 L DIESEL
- Topaz | 1984-1986 | Base, GS, LS | 4 Cyl 2.0 L DIESEL
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Mercury Temperature Sensor
Part Number: F7DZ-10884-AA
$15.63 MSRP: $25.22
You Save: $9.59 (39%)
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Product Specifications
- Other Name: Sender Assembly - Temperature; Engine Coolant Temperature Sender; Cooling Fan Switch; Temp Sender Gauge; Fan Switch; Sending Unit; Temperature Sending Unit; Temperature Gauge Sending Unit
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base, S, V6 | 6 Cyl 2.5 L GAS
- Grand Marquis | 1998-2006 | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
- Mountaineer | 1997-2001 | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
- Sable | 1997-2002 | GS, LS, LS Premium | 6 Cyl 3.0 L GAS
- Tracer | 1997-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Fan Switch
Part Number: F7CZ-10884-BA
$28.61 MSRP: $45.44
You Save: $16.83 (38%)
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Product Specifications
- Other Name: Sender Assembly - Temperature; Engine Coolant Temperature Sender; Cooling Fan Switch; Coolant Sensor; Sending Unit; Temperature Sending Unit
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
- Tracer | 1998-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Oil Pan Gasket
Part Number: DOWY-10884-A
$34.69 MSRP: $55.09
You Save: $20.40 (38%)
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Product Specifications
- Other Name: Sender Assembly - Temperature; Transmission Filter; Valve Spring; Temperature Sending Unit; Temperature Gauge Sending Unit; Intake Valve Spring; Filter
- Manufacturer Note: 1 contact, w/electronic instrumentation
- Replaced by: F1SZ-10884-A
Fits the following Mercury Models:
- Capri | 1984-1986 | 5.0, GS, RS | 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS
- Cougar | 1985-1991 | Base, LS, XR-7 | 4 Cyl 2.3 L GAS, 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS
- Lynx | 1984-1987 | Base, GL, GS, L, LS, LTS, RS, XR3 | 4 Cyl 1.6 L GAS, 4 Cyl 1.9 L GAS
- Sable | 1986-1991 | GS, LS | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Topaz | 1984-1991 | Base, GS, GS AWD, LS, LS AWD, LTS, LTS AWD, Sport, Sport AWD, XR5, XR5 AWD | 4 Cyl 2.3 L GAS
- Tracer | 1991 | Base, Trio | 4 Cyl 1.9 L GAS
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Mercury Temperature Sending Unit
Part Number: FOCZ10884A
$39.68 MSRP: $53.99
You Save: $14.31 (27%)
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Product Specifications
- Other Name: Sensor Assembly - Water Temperature
Fits the following Mercury Models:
- Tracer | 1991-1996 | LTS | 4 Cyl 1.8 L GAS
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Mercury Temperature Sending Unit
Part Number: F6XZ-10884-AA
$36.63 MSRP: $49.84
You Save: $13.21 (27%)
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Product Specifications
- Other Name: Sender Assembly - Temperature; Coolant Temperature Sensor
Fits the following Mercury Models:
- Villager | 1996-2002 | Base, Estate, GS, LS, Nautica, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
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Mercury Coolant Temperature Sensor
Part Number: F3XY-12A648-A
$20.25 MSRP: $27.56
You Save: $7.31 (27%)
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Product Specifications
- Other Name: Sender Assembly; Engine Coolant Temperature Sensor; Air Temperature Sensor; HVAC System Switch; Temperature Sensor
Fits the following Mercury Models:
- Villager | 1993-2002 | Base, Estate, GS, LS, Nautica, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
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Mercury Temperature Sensor
Part Number: F68Z-10884-AA
Product Specifications
- Other Name: Sender Assembly - Temperature; Engine Coolant Temperature Sender; Coolant Temperature Sender; Coolant Temperature Sensor; Temperature Gauge; Temperature Sending Unit; Temperature Gauge Sending Unit
Fits the following Mercury Models:
- Grand Marquis | 1996-1997 | GS, LS | 8 Cyl 4.6 L GAS
- Mariner | 2005-2008 | Base, Convenience, Hybrid, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Temperature Sending Unit
Part Number: F5RZ-10884-A
Product Specifications
- Other Name: Sender Assembly - Temperature; Coolant Temperature Sender
- Manufacturer Note: 2 pin terminal, 2.0 liter, Engineering part number 91AB 10884 A*
Fits the following Mercury Models:
- Mystique | 1995-2000 | Base, GS, GS Spree, LS | 4 Cyl 2.0 L GAS
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Mercury Temperature Sending Unit
Part Number: F5CZ-10884-A
Product Specifications
- Other Name: Sender Assembly - Temperature
- Manufacturer Note: 1.9 liter
Fits the following Mercury Models:
- Tracer | 1995-1996 | Base, Trio | 4 Cyl 1.9 L GAS
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Mercury Temperature Sending Unit
Part Number: F3XY-10884-C
Product Specifications
- Other Name: Sender Assembly - Temperature; Coolant Temperature Sender; Temp Sender Gauge
- Manufacturer Note: 1 spade terminal connector; #25080,0B000; Coolant Temperature Sender.
Fits the following Mercury Models:
- Villager | 1993-2002 | Base, Estate, GS, LS, Nautica, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS

Mercury Coolant Temperature Sensor Parts Questions & Experts Answers

Coolant Temperature Sensor
9U2Z-12A648-A
Q: How to Service and Repair a Coolant Temperature Sensor on Mercury Marauder?
A: The service of Engine Coolant Temperature (ECT) Sensor begins with draining the cooling system. A technician should disconnect the ECT sensor electrical connector after which they should remove the sensor from its location. Reverse the removal procedure while applying sealant to the ECT sensor threads before reattaching it to its position. The service ends with filling and bleeding the cooling system.
Temperature Sensor
F7DZ-10884-AA
Q: How to Service and Repair a Coolant Temperature Sensor on Mercury Grand Marquis?
A: Installation of an engine temperature sensor requires first slowing down the fire suppression system (if present) then taking away the intake manifold. When removing the cylinder head temperature (CHT) sensor it is natural for the tip to show slight compression. Interfere with the CHT electrical connector and take out the CHT sensor so discard it for non-recyclability while you install a brand-new sensor. Reinstall the new sensor and follow the reverse steps of removal alongside repowering the fire suppression system when it was depowered.
Coolant Temperature Sensor
3L8Z-12A648-A
Q: How to Service the Coolant Temperature Sensor on Mercury Mountaineer?
A: Disconnection of the battery ground cable and draining the cooling system stands as the first step for servicing ECT Sensors. You should follow the picture and table illustration while removing components according to their specified order. Reinstallation should be done backwards to the removal process while performing coolant system filling and bleeding procedures.