why does my Honda CR-V's engine rev high when in park

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to avoid any electrical issues.

2. Check Throttle Position Sensor (TPS)

• Tools Required: Multimeter
• Reconnect the battery and start the engine.
• Use the multimeter to measure the voltage at the TPS connector while moving the throttle.
• If the readings are outside the manufacturer's specifications, replace the TPS.

3. Inspect for Vacuum Leaks

• Tools Required: Smoke machine or carburetor cleaner
• Start the engine and use a smoke machine to introduce smoke around the intake manifold.
• If smoke escapes from any areas, locate and replace the faulty vacuum hoses or intake gaskets.

4. Test Idle Air Control Valve (IAC)

• Tools Required: Multimeter
• Disconnect the IAC connector and ohm test the valve according to the service manual specifications.
• If the IAC is faulty, remove it and replace it with a new unit.

5. Replace Air Filter

• Tools Required: None
• Open the air filter housing and remove the old air filter.
• Install a new OEM or quality aftermarket air filter, ensuring it fits snugly.

6. Reconnect Battery and Final Check

• Reconnect the negative battery terminal.
• Start the engine and let it idle to see if the high revs have corrected.