I have a 2002 Trooper that prioviously had the engine repllaced (broken crankshaft). I have put roughly 12k miles since i have had the truck, the new engine only had 2k before i got it. I have changed the oil but was coming up do for another, and the oil light came on. I added oil and had planned to change the oil this weekend, but now the engine is making a pretty loud clicking noise. I didnt notice it until i began to slow a little getting off the highway. If the engine was revved a little, the clicking got louder....and it was still present when idle. Any clues? Please don't tell me the engine is about to go again.