How to service and repair the Speed Sensor on the 4R70W transmission on Ford Expedition?

Before replacing or fixing the output shaft speed (OSS) sensor on the 4R70W transmission you need to place the vehicle in neutral position on a hoisting system. Follow these steps to replace the OSS sensor: Break its electrical connector connection then remove the bolt and remove the sensor device from its mount. The sensor installation requires performing the opposite steps of removal.

OEM Ford Expedition Speed Sensor

Speed Control Sensor

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Ford Expedition Distance Sensor, Front Part Number: H1BZ-9E731-F
$513.86 MSRP: $830.47
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Product Specifications
- Other Name: Sensor Assembly - Speed; Cruise Control Distance Sensor, Front; Sensor
- Position: Front
- Replaces: H1BZ-9E731-AE, H1BZ-9E731-C
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2020 Ford Expedition | King Ranch, Limited, Max King Ranch, Max Limited, Max Platinum, Max SSV, Max XL, Max XLT, Platinum, Premium, SSV, XL, XLT | 3.5L V6, 6 Cyl 3.5 L GAS
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Ford Expedition Distance Sensor, Front Part Number: JX7Z-9E731-E
$463.13 MSRP: $792.15
You Save: $329.02 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly - Speed; Cruise Control Distance Sensor, Front; Sensor
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2021 Ford Expedition | King Ranch, Limited, Max King Ranch, Max Limited, Max Platinum, Max SSV, Max XLT, Platinum, SSV, XLT | 6 Cyl 3.5 L GAS
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Ford Expedition Speed Sensor Part Number: F65Z-9E731-AB
Product Specifications
- Other Name: Sensor Assembly - Speed; Vehicle Speed Sensor
- Replaces: F65Z-9E731-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2006 Ford Expedition | Eddie Bauer, King Ranch, Limited, NBX, XLS, XLT, XLT Sport | 4.6L V8, 5.4L V8, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS

Ford Expedition Speed Sensor

OEM Speed Sensor boasts unmatched quality. Each part goes through full quality checks. They adhere to Ford's official factory standards. These steps remove flaws and inconsistencies. So you can get Speed Sensor with long life and a perfect fit. Come to our website and find genuine Ford Expedition parts. We keep a wide inventory of OEM Expedition 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.

The Speed Sensor in your Ford Expedition is an electronic component that monitors the rotating speed of the transmission output shaft. This Speed Sensor transmits this data to the powertrain computer that uses the information to determine vehicle speed. This vehicle speed data is essential in controlling shift timing, line pressure, and when to engage the torque converter clutch. Located near a notched reluctor wheel on the shaft, the Speed Sensor monitors the movement of each tooth that passes by and transforms this motion into an electrical signal that allows the Expedition transmission to adjust the gear selection efficiently. Two known designs achieve this in a confirmed manner. One of a permanent-magnet type produces an alternating voltage by a varying magnetic flux as each tooth comes by. A reed-type design opens and closes an internal contact repeatedly as the same movement occurs. Though differing in their internal mechanisms, both these styles provide the same kind of speed information. An incorrect signal from your Ford Expedition Speed Sensor can result in delayed or harsh shifts, missed upshifts, as well as loss of clutch lockup due to the computer depending on accurate data to do this. Thus, to ensure that the Ford Expedition operates normally, a constant signal from the Speed Sensor must be maintained.

Ford Expedition Speed Sensor Parts and Q&A

Speed Sensor
F65Z-9E731-AB
Q: How to service and repair the Speed Sensor on the 4R70W transmission on Ford Expedition?
A:
Before replacing or fixing the output shaft speed (OSS) sensor on the 4R70W transmission you need to place the vehicle in neutral position on a hoisting system. Follow these steps to replace the OSS sensor: Break its electrical connector connection then remove the bolt and remove the sensor device from its mount. The sensor installation requires performing the opposite steps of removal.