New to Planetisuzoo, so hello all. In November I purchased a 99 Trooper. Now I have a few questions that I am having a time finding the answers. First this vehicle has a rather noisy engine. Is this normal? Next the check engine light has started to appear with a 440 code. I have changed everything except the charcoal canister. Now I need to find a canister, any ideas? Finally, the oil light is now flashing when the engine is at low idle (4 to 6 rpm) any thoughts? I bought this for my wife and she loves the Trooper, I would hate to have to get rid of it. Thanks everyone.