How to check and adjust the bypass air valve (BPA-ISC) for idle speed control on Ford Crown Victoria?

The BPA-ISC valve controls idle speed by regulating idle control valve. Check the voltage signal from the PCM at 10.5 volts with ignition On. Clean the valve and housing if needed. Adjust idle speed for 5.0L engines by adjusting throttle plate screw. For 1988 models, raise engine speed to 1800 rpm before adjusting. For 1989-1992 models, adjust throttle plate stop screw with 0.010-inch feeler gauge. 4.6L engines require professional service. To remove the BPA-ISC valve, unplug connector, remove screws, inspect O-ring, clean surfaces, install new O-ring, tighten screws, and reconnect connector.

Genuine Ford Crown Victoria Idle Control Valve

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7 Idle Control Valves found

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Ford Crown Victoria Valve Assy - Throttle Air By-Pass
Part Number: F5PZ-9F715-AA
$85.03 MSRP: $140.55
You Save: $55.52 (40%)
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Product Specifications
- Other Name: Idle Speed Control
- Replaces: F2AZ-9F715-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992-1995 Ford Crown Victoria | 8 Cyl 4.6L | 4AT AOD, 4AT AOD-E
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Ford Crown Victoria Valve Assembly - Throttle
Part Number: F2AZ-9F715-A
$85.03 MSRP: $140.55
You Save: $55.52 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: VALVE ASY - THROTTLE
- Replaced by: F5PZ-9F715-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992-1995 Ford Crown Victoria | 8 Cyl 4.6L | 4AT AOD, 4AT AOD-E
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Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: 2W7Z-9F715-BA
$96.90 MSRP: $154.55
You Save: $57.65 (38%)
Product Specifications
- Other Name: Idle Speed Control
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2005 Ford Crown Victoria | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT 4R75W
View related parts
Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: F8VZ-9F715-AA
Product Specifications
- Other Name: Valve Assy - Throttle Air By-Pass
- Replaced by: F8VZ-9F715-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-1999 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W
View related parts
Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: F8VZ-9F715-BA
Product Specifications
- Other Name: Valve Assy - Throttle Air By-Pass
- Replaced by: F8VZ-9F715-BB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2002 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W
View related parts
Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: F65Z-9F715-BB
Product Specifications
- Other Name: Valve Assy - Throttle Air By-Pass
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-1997 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W
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Ford Crown Victoria Valve Assy - Throttle Air By-Pass
Part Number: F6AZ-9F715-EB
Product Specifications
- Other Name: Idle Speed Control
- Replaces: F6AZ-9F715-EA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-1997 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W

Ford Crown Victoria Idle Control Valve

The Idle Control Valve installed in Ford Crown Victoria cars is extremely important in setting the speed at which the engine idles by controlling the flow of air passing the throttle valve. This electrically operated valve called as the idle air control (IAC) actuator co-ordinates with the engine control unit (ECU) to maintain proper idle and avoid stalling in any load conditions. The IAC actuator usually has a linear servo motor that moves a plunger to regulate the air supply allowing correct idle speeds. These are very sturdy valves but certain problems like jamming of the valve by dirt or dust which causes erratic idling can occur. Cleaning and other maintenance procedures are useful for the proper functioning of the Idle Control Valve in Ford Crown Victoria cars because most of the time it is necessary to replace the control unit.

We provide a wide range of Ford Crown Victoria Idle Control Valve at the best prices possible. If you need Ford Crown Victoria Idle Control Valve, 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.

Ford Crown Victoria Idle Control Valve Parts Questions & Experts Answers

Valve Assembly - Throttle Air By-Pass
F8VZ-9F715-BA
Q: How to check and adjust the bypass air valve (BPA-ISC) for idle speed control on Ford Crown Victoria?
A: The BPA-ISC valve controls idle speed by regulating idle control valve. Check the voltage signal from the PCM at 10.5 volts with ignition On. Clean the valve and housing if needed. Adjust idle speed for 5.0L engines by adjusting throttle plate screw. For 1988 models, raise engine speed to 1800 rpm before adjusting. For 1989-1992 models, adjust throttle plate stop screw with 0.010-inch feeler gauge. 4.6L engines require professional service. To remove the BPA-ISC valve, unplug connector, remove screws, inspect O-ring, clean surfaces, install new O-ring, tighten screws, and reconnect connector.