* Rocking the car on a ramp: This action helps to move the starter gear into engagement with the flywheel. This suggests the starter isn't engaging properly.
Possible Reasons the Starter Isn't Engaging:
* Worn Starter Gear: The starter gear can wear down over time, making it difficult to engage with the flywheel.
* Faulty Bendix: The Bendix is a small part within the starter that pushes the gear out to engage with the flywheel. It can fail or become stuck.
* Weak Battery: While you mentioned the battery is "OK," a weak battery can still cause problems with the starter motor, particularly if it's drawing a lot of power to turn over the engine.
* Dirty Connections: Corrosion or loose connections on the battery terminals, starter solenoid, or starter motor itself can cause a poor electrical flow, preventing the starter from working properly.
* Starter Solenoid: This part is responsible for delivering the electrical current to the starter motor. A faulty solenoid may not be sending enough current to the motor.
* Faulty Starter Motor: The starter motor itself could be faulty, experiencing internal issues that prevent it from turning.
What to Do Next:
1. Check Battery Connections: Inspect the battery terminals and connections for corrosion or looseness. Clean and tighten if necessary.
2. Check Starter Solenoid: Test the solenoid using a voltmeter or by tapping on it gently while trying to start the car. A click when tapping can indicate a sticking solenoid.
3. Inspect the Starter: If you're comfortable with automotive work, you can visually inspect the starter for any signs of damage or wear.
4. Get a Diagnostic: If you're not comfortable with the above steps, it's best to take your Cherokee to a mechanic for diagnosis and repair. They can use specialized tools to test the starter and other components.
Remember: Before attempting any repairs, disconnect the battery to prevent electrical shock. Be careful working around the starter motor, as it can be dangerous if it's running.
