Overview
The Crown Automotive transmission input speed sensor, part number CRO4799061AB, is a factory style replacement for Jeep vehicles with a 42RLE or 45RFE transmission. It also fits several Dodge and Mitsubishi models. An input speed sensor reports how fast the transmission input shaft is turning, and the transmission control uses that signal for shift timing.
Check your year, model and transmission against the coverage below before ordering, since this sensor is made for the 42RLE and 45RFE transmissions only.
Key features
- Factory style replacement sensor
- Matches 42RLE or 45RFE transmissions
- Fitment list covers Jeep Grand Cherokee WJ, Liberty KJ and KK, and Wrangler LJ, TJ and JK
- It also fits Dodge Dakota, Durango, Nitro and Ram 1500, 2500 and 3500 models.
- Direct fit for the vehicles covered below
Why input speed sensors fail
The input speed sensor sits in a hot, fluid-filled area of the transmission, so heat, debris and worn seals can all affect its signal. When the signal becomes unreliable, the transmission control may shift harshly, delay shifts or enter a limited mode to protect the gearbox.
Before replacing the sensor, inspect its connector and wiring for corrosion, chafing and loose pins. Check the transmission fluid level and condition as well, since low or contaminated fluid can produce shift problems that resemble sensor faults. Install the new sensor with clean surfaces and a fresh seal where one is fitted.
- Inspect the connector for corrosion
- Check wiring for chafing or loose pins
- Check fluid level and condition
- Use a clean seal when fitting the sensor
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | CRO4799061AB |
| Part type | Transmission input speed sensor |
| Transmission | 42RLE or 45RFE |
| Fitment type | Direct fit |
Vehicle fitment
It fits 2000 to 2002 and 2004 to 2010 Dodge Dakota; 2001 to 2002 and 2004 to 2009 Dodge Durango; 2007 to 2010 Dodge Nitro; 2006 to 2010 Dodge Ram 1500; 2007 to 2010 Dodge Ram 2500; 2008 to 2010 Dodge Ram 3500; 1999 to 2004 Jeep Grand Cherokee (WJ); 2002 to 2007 Jeep Liberty (KJ); 2008 to 2011 Jeep Liberty (KK); 2011 Jeep Wrangler (JK); 2004 to 2006 Jeep Wrangler (LJ); 2003 to 2006 Jeep Wrangler (TJ); 2006 to 2009 Mitsubishi Raider; and 2011 Ram 1500, 2500, 3500 and Dakota.
Jeep Cherokee XJ, Wrangler YJ and Grand Cherokee ZJ are not on this list, and neither are Dodge model years outside the ranges above. Confirm your vehicle’s year, model and trim before ordering.
What’s included
Check the connectors, gaskets and other hardware against your installation before starting.
