I just did this. I used barely-damp soapy (ArmorAll Wash and Wax) and wet clothes to dig around the inside of my engine bay at what at I could, though completing avoiding the battery when possible. I also got parts on the inside of the hood and the area just behind the grille... patience.
Someone I know said to do this only when the car was running, and preferably while it's not up to temperature yet.oskerb said:Well with your intake , cover up your air filter with a trash bag. Then just hose it all down. You can drench pretty much everything in there. The electronics are all sealed up. The battery will not get hurt by hitting it with water. But take your discretion on that one. Personally I drench it all top then the under part of the engine, then back to the top. I hit with high pressure water, then tire degreaser, then back to water rinse. Never have had a problem with this vehicle or any other vehicle I have had.