How to service the Throttle Position Sensor on Mercury Grand Marquis?

The service on the Throttle Position Sensor requires a first step of disconnecting the battery ground cable. One should first remove the engine appearance cover and next disconnect the electrical connector from the throttle position sensor then remove the sensor. Service procedure requires following the opposite steps used for installation.

How to Properly Handle the Throttle Position Sensor on a Mercury Grand Marquis?

Service of the throttle position (TP) sensor starts with disconnecting the electrical connector. A hand tool should first loosen the TP sensor screws 1-2 full turns before the use of a suitable high-speed driver to prevent damaging the screws. bioswabs should absorb the discarded TP sensor together with its two screws. Installation should utilize both fresh TP sensor components and screws because replacing old equipment is forbidden. Set the radial locator tab on your new TP sensor to the radial locator hole on the throttle body before putting the sensor in place and screwing on two new screws that need to be tightened to 3 Nm (27 lb-in). Complete the process by reattaching the TP sensor electrical connector.

OEM Mercury Grand Marquis Throttle Position Sensor

TPS Switch

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6 Throttle Position Sensors found

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Mercury Grand Marquis Throttle Position Sensor Part Number: F2AZ-9B989-AA
$42.94 MSRP: $68.18
You Save: $25.24 (38%)
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Product Specifications
- Other Name: Potentiometer - Engine Throttle; Throttle Sensor
- Replaces: F2AZ-9B989-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992-1994 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Throttle Position Sensor Part Number: F4SZ-9B989-AA
$50.61 MSRP: $83.27
You Save: $32.66 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Potentiometer - Engine Throttle; Throttle Pos Sensor; Fuel Injector; Throttle Sensor; Potentiometer; Injector
- Replaces: F4SZ-9B989-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1995-2004 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Throttle Position Sensor Part Number: 6L2Z-9B989-D
$86.96 MSRP: $143.09
You Save: $56.13 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Potentiometer - Engine Throttle; Throttle Pos Sensor; Throttle Sensor; Potentiometer
- Replaces: 3L5Z-9B989-AA, 6L2Z-9B989-B, 6L2Z-9B989-A, DY-1049
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Throttle Position Sensor Part Number: E8DZ9B989A
$23.57 MSRP: $32.07
You Save: $8.50 (27%)
ADD TO CART
Product Specifications
- Other Name: Potentiometer - Engine
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS
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Mercury Grand Marquis Throttle Position Sensor Part Number: E8AZ9B989A
Product Specifications
- Other Name: Potentiometer - Engine Throttle
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1989 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS
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Mercury Grand Marquis Throttle Position Sensor Part Number: E3PZ9B989A
Product Specifications
- Other Name: Sensor - Throttle Position
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1985 Mercury Grand Marquis | Base, Colony Park, LS | 8 Cyl 5.0 L GAS

Mercury Grand Marquis Throttle Position Sensor

OEM Throttle Position Sensor boasts unmatched quality. Each part goes through full quality checks. They adhere to Mercury's official factory standards. These steps remove flaws and inconsistencies. So you can get Throttle Position Sensor with long life and a perfect fit. Come to our website and find genuine Mercury Grand Marquis parts. We keep a wide inventory of OEM Grand Marquis parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

Mercury Grand Marquis use Throttle Position Sensor, abbreviated as TPS, to regulate the air-fuel mixtures for combustion purposes. The Throttle Position Sensor records the position of the throttle and sends the signals to the fuel injection system, letting the vehicle's computer to control the flow of fuel proportional to the power output of the engine. It can happen several times per second, which helps maintain proper acceleration, speed changes, as well as slowness. Year models of Mercury Grand Marquis have used different types of Throttle Position Sensor such as the Hall effect, inductive, and magnetoresistive type of non-contact sensor. These modern sensors are dissimilar to previous types that were potentiometric in nature; the former uses contact and change in resistance. The non-contact Throttle Position Sensor increases reliability and performance because it works without wearing from the moving component; which in turn optimizes the general performance of the Grand Marquis's electronic throttle control system.

Mercury Grand Marquis Throttle Position Sensor Parts and Q&A

Throttle Position Sensor
F4SZ-9B989-AA
Q: How to service the Throttle Position Sensor on Mercury Grand Marquis?
A:
The service on the Throttle Position Sensor requires a first step of disconnecting the battery ground cable. One should first remove the engine appearance cover and next disconnect the electrical connector from the throttle position sensor then remove the sensor. Service procedure requires following the opposite steps used for installation.
Throttle Position Sensor
6L2Z-9B989-D
Q: How to Properly Handle the Throttle Position Sensor on a Mercury Grand Marquis?
A:
Service of the throttle position (TP) sensor starts with disconnecting the electrical connector. A hand tool should first loosen the TP sensor screws 1-2 full turns before the use of a suitable high-speed driver to prevent damaging the screws. bioswabs should absorb the discarded TP sensor together with its two screws. Installation should utilize both fresh TP sensor components and screws because replacing old equipment is forbidden. Set the radial locator tab on your new TP sensor to the radial locator hole on the Throttle Body before putting the sensor in place and screwing on two new screws that need to be tightened to 3 Nm (27 lb-in). Complete the process by reattaching the TP sensor electrical connector.