Overview
The Crown Automotive 4637071 is a fuel idle air control motor for 4.0L six-cylinder Jeep engines. It adjusts the air that bypasses the closed throttle plate, which the engine uses to hold a steady idle. It fits 1991–1997 Cherokee XJ, 1993–1995 Grand Cherokee ZJ, 1997 Wrangler TJ and 1994–1995 Wrangler YJ models.
Idle air control motors are electrical actuators. Symptoms of a faulty motor can include a rough or unstable idle, which is why matching the year and model matters before you order.
Key features
- Built for 4.0L six-cylinder engines
- Fuel idle air control motor type
- Direct fit design
- Covers four listed Jeep models
- Crown Automotive part number 4637071
Idle control troubleshooting
A rough, hunting or stalling idle has several possible causes, and the idle air control motor is only one of them. Carbon buildup around the throttle plate and bore can restrict the air path and mimic a failed motor. Cleaning the throttle body with an appropriate throttle body cleaner, and inspecting the connector for corrosion, are inexpensive steps to take first. Disconnect the battery before unplugging the motor so the electrical system is not disturbed during the check.
Vacuum leaks are another common cause of unstable idle. A cracked hose or a leaking intake gasket lets unmetered air into the engine and can produce a high or rough idle. Inspect the hoses around the intake before deciding the motor is at fault. When the motor is replaced, make sure the throttle plate moves freely and that the engine idles smoothly once warm.
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 4637071 |
| UPC | 848399005165 |
| Type | Fuel idle air control motor |
| Engine | 4.0L six-cylinder |
| Fitment type | Direct fit |
Vehicle fitment
It fits the following vehicles:
- 1991–1997 Jeep Cherokee (XJ)
- 1993–1995 Jeep Grand Cherokee (ZJ)
- 1997 Jeep Wrangler (TJ)
- 1994–1995 Jeep Wrangler (YJ)
Wrangler TJ models from 1998 on and Grand Cherokee WJ models are not in this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Because it is an electrical actuator, disconnect the battery before you unplug the connector or remove the motor.
What’s included
Check whether a gasket or mounting screws are included before installing the motor.
