How do you check and replace fuel injectors, Fuel Pressure Regulator,Fuel Rail,Intake Manifold,Throttle Body and Throttle Position Sensor on a 5.0L engine on Mercury Grand Marquis?

The first step in removing the air intake plenum and throttle body on a 5.0L engine involves disconnecting the negative battery cable. Also, unplug electrical connectors at the air bypass valve, throttle position sensor, and EGR position sensor. Disconnect the accelerator cable and transmission linkage from the throttle body assembly, remove the accelerator cable/TV cable bracket from the intake manifold, and label and detach vacuum lines from the upper intake manifold vacuum tree, EGR valve, and fuel pressure regulator. Make sure to disconnect the PCV system or any canister purge line if it is present and also downsize the water pipes of spacer coolant lines for EGR. Unbolt six (6) upper manifold retaining bolts to separate the upper manifold and throttle body as an assembly from the lower manifold. Ensure the gasket is in place during installation, attach new gasket(s) onto lower intake mounting face, and snug up air intake plenum with throttle body assembly by using six (6) upper manifold retaining bolts right up to the recommended torque value.

Genuine Mercury Grand Marquis Fuel Injector

Gas Injector

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6 Fuel Injectors found

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Mercury Grand Marquis Injector Assembly
Part Number: 6W7Z-9F593-AA
$52.03 MSRP: $86.00
You Save: $33.97 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assy; Injector
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2011 Mercury Grand Marquis | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 4AT 4R70W, 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Injector Assembly
Part Number: XL2Z-9F593-CA
$67.56 MSRP: $109.45
You Save: $41.89 (39%)
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Product Specifications
- Other Name: Injector Assy; Injector
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2004 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
- 2000 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Injector Assembly
Part Number: 5W7Z-9F593-AA
$43.09 MSRP: $68.73
You Save: $25.64 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Injector Assy; Injector
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Injector Assembly
Part Number: 2C5Z-9F593-AA
$49.31 MSRP: $98.00
You Save: $48.69 (50%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assy
- Manufacturer Note: 4V, Marauder
- Replaced by: 4L8Z-9F593-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2006 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Injector Assembly
Part Number: 1W7Z-9F593-AA
Product Specifications
- Other Name: Injector Assy; Injector
- Manufacturer Note: Injector asy. (Fuel) #1W7E 9F593-A5A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2002 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Injector Assembly
Part Number: XW7Z-9F593-AB
Product Specifications
- Other Name: Injector Assy; Injector
- Manufacturer Note: Injector asy. (Fuel) #XW7E 9F593-A5B
- Replaces: F81Z-9F593-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W

Mercury Grand Marquis Fuel Injector

Mercury Grand Marquis Fuel Injector is one of the vital parts of cars that deliver the fuel under the instruction of the Engine Control Module directly into the cylinders of the engine. This system is called "returnless" and shrinks fuel lines with the use of the regulator located in the fuel pump or ECM. Defective injectors cause poor fuel distribution which results in poor engine power, and low fuel economy which can wear out catalytic converters and oxygen sensors. For proper functions of vehicles, defective fuel injectors should be replaced as soon as possible. This component called the Fuel Injector could be said to be the electronic version of the carburetor that helps determine the amount of air-fuel mixture for the current load of the engine thus improving the cylinder's efficiency and performance.

We provide a wide range of Mercury Grand Marquis Fuel Injector at the best prices possible. If you need Mercury Grand Marquis Fuel Injector, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.

Mercury Grand Marquis Fuel Injector Parts Questions & Experts Answers

Injector Assembly
6W7Z-9F593-AA
Q: How do you check and replace fuel injectors, Fuel Pressure Regulator,Fuel Rail,Intake Manifold,Throttle Body and Throttle Position Sensor on a 5.0L engine on Mercury Grand Marquis?
A: The first step in removing the air intake plenum and throttle body on a 5.0L engine involves disconnecting the negative battery cable. Also, unplug electrical connectors at the air bypass valve, throttle position sensor, and EGR position sensor. Disconnect the Accelerator Cable and transmission linkage from the throttle body assembly, remove the accelerator cable/TV cable bracket from the intake manifold, and label and detach vacuum lines from the upper intake manifold vacuum tree, EGR valve, and fuel pressure regulator. Make sure to disconnect the PCV system or any canister purge line if it is present and also downsize the water pipes of spacer coolant lines for EGR. Unbolt six (6) upper manifold retaining bolts to separate the upper manifold and throttle body as an assembly from the lower manifold. Ensure the gasket is in place during installation, attach new gasket(s) onto lower intake mounting face, and snug up air intake plenum with throttle body assembly by using six (6) upper manifold retaining bolts right up to the recommended torque value.