On a 2002 Honda CRV if you smell dead mouse when turning on the air conditioning or heat system where can find source of these systems in engine to clean it out?

The source of the dead mouse smell in your 2002 Honda CR-V's air conditioning or heating system is most likely the cabin air filter. The cabin air filter is responsible for removing dust, pollen, and other particles from the air that enters the vehicle's interior through the vents. Over time, the cabin air filter can become clogged with debris, which can create a musty or unpleasant smell. In some cases, dead mice or other small animals can also become trapped in the cabin air filter, which can cause a strong and unpleasant odor.

To clean out the source of the smell, you will need to replace the cabin air filter. The cabin air filter is typically located behind the glove box on the passenger side of the vehicle. To replace the cabin air filter, you will need to:

1. Open the glove box.

2. Locate the cabin air filter housing, which is usually a black plastic box with a lid.

3. Remove the lid of the cabin air filter housing.

4. Remove the old cabin air filter.

5. Install the new cabin air filter.

6. Replace the lid of the cabin air filter housing.

7. Close the glove box.

After replacing the cabin air filter, the smell of dead mice should disappear. If the smell persists, you may need to have the air conditioning or heating system serviced by a qualified mechanic.