HomeTransmission > SensorsStandard Ignition SC394 Automatic Transmission Input Shaft Speed Sensor
Part #: 450308

Standard Ignition SC394 Automatic Transmission Input Shaft Speed Sensor

57 vehicles fit this part
Select your vehicle to confirm fitment
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Overview of Standard Ignition SC394 Transmission Sensor

The Standard Ignition SC394 is an automatic transmission input shaft speed sensor designed for select Ford, Mazda, and Mercury vehicles. This sensor features a male oval plug-in connector with two male pin terminals, ensuring reliable electrical connections for accurate speed readings.

  • Connector Gender: Male
  • Connector Quantity: 1
  • Connector Shape: Oval
  • Connector Type: Plug in
  • Terminal Gender: Male
  • Terminal Quantity: 2
  • Terminal Type: Pin

Detailed Product Description

The SC394 automatic transmission input shaft speed sensor by Standard Ignition is engineered to provide precise input shaft speed data to the vehicle’s transmission control module. Its single male oval plug-in connector with two male pin terminals ensures a secure and stable electrical connection, minimizing signal loss or interference. This sensor is compatible with various Ford, Mazda, and Mercury models including the Ford Escape, Mercury Mariner, Mazda Tribute, and others such as the Ford Contour and Mazda MX-6. The plug-in design simplifies installation and replacement, making it a practical choice for maintaining transmission performance.

Compatible Vehicles and Applications

This sensor is compatible with the following makes and models:

  • Ford: Contour, Escape
  • Mazda: 626, MX-6, Tribute, Probe, Mystique
  • Mercury: Cougar, Mariner

Use the SC394 sensor to address transmission input shaft speed reading issues in these vehicles.

Common Issues Addressed by SC394 Sensor

  • Erratic or inaccurate transmission speed readings
  • Transmission shifting problems or delays
  • Check engine or transmission warning lights related to speed sensor faults
  • Transmission slipping or failure to engage gears properly
  • Diagnostic trouble codes (DTCs) related to input shaft speed sensor

Installation Notes and Tips

  • Ensure the vehicle is turned off and cooled before sensor replacement
  • Disconnect the battery to prevent electrical shorts during installation
  • Locate the input shaft speed sensor on the transmission housing as per vehicle service manual
  • Carefully unplug the male oval connector and remove the old sensor
  • Install the SC394 sensor by plugging in the connector securely and fastening the sensor in place
  • Clear any diagnostic trouble codes after installation and test drive to confirm proper operation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The SC394 sensor undergoes rigorous quality control to ensure durability and reliable performance in demanding transmission environments. Please refer to Standard Ignition’s warranty policy for specific coverage details.

This part fits 57 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
2011MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2010MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2009MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2008FordEscapeAutomaticN/A
2008FordEscapeGASN/A
2008MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2008MercuryMarinerN/A
2007FordEscapeAutomaticN/A
2007FordEscapeGASN/A
2007MercuryMarinerN/A
2006FordEscapeAutomaticN/A
2006FordEscapeGASN/A
2006MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2006MercuryMarinerN/A
2005FordEscapeAutomaticN/A
2005FordEscapeGASN/A
2005MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2005MercuryMarinerAutomaticN/A
2004FordEscapeAutomaticN/A
2004FordEscapeN/A
2004MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2003FordEscapeAutomaticN/A
2003FordEscapeN/A
2003MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2002FordEscapeAutomaticN/A
2002FordEscapeN/A
2002Mazda626Automatic2.0LL4N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2002Mazda626Automatic2.5LV6N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2002MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2002MercuryCougar2.0LL4N/AAutomatic Transmission Input Sensor
2001FordEscapeAutomaticN/A
2001FordEscapeN/A
2001Mazda626Automatic2.0LL4N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2001Mazda626Automatic2.5LV6N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2001MazdaTributeAutomaticN/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2001MercuryCougar2.0LL4N/AAutomatic Transmission Input Sensor
2000FordContour2.0LL4N/AAutomatic Transmission Input Sensor
2000Mazda626Automatic2.0LL4N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2000Mazda626Automatic2.5LV6N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
2000MercuryMystique2.0LL4N/AAutomatic Transmission Input Sensor
1999FordContour2.0LL4N/AAutomatic Transmission Input Sensor
1999MercuryMystique2.0LL4N/AAutomatic Transmission Input Sensor
1998FordContour2.0LL4N/AAutomatic Transmission Input Sensor
1998MercuryMystique2.0LL4N/AAutomatic Transmission Input Sensor
1997FordContour2.0LL4N/AAutomatic Transmission Input Sensor
1997FordProbeAutomaticN/A
1997MercuryMystique2.0LL4N/AAutomatic Transmission Input Sensor
1996FordContour2.0LL4N/AAutomatic Transmission Input Sensor
1996FordProbeAutomaticN/A
1996MercuryMystique2.0LL4N/AAutomatic Transmission Input Sensor
1995FordContour2.0LL4N/AAutomatic Transmission Input Sensor
1995FordProbeAutomaticN/A
1995MercuryMystique2.0LL4N/AAutomatic Transmission Input Sensor
1994FordProbeAutomaticN/A
1994MazdaMX-6N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.
1993FordProbeN/AOn Transmission
1993MazdaMX-6N/APrior to purchase, ensure compatibility with vehicle's alternator for proper fit.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.