We have an 01 Rodeo Sport with the 3.2. It started making the most awful rattle/knock. It sounds like its coming from the front of the engine. The sound disappears when RPM's get up above 2500-2700. The engine doesn't seem to run horribly but the noise makes me think of impending doom for our Isuzu. All signs point to Timing Belt Tensioner correct? I drained the oil and didn't notice anything metallic but probably didn't look as closely as I should have. Bear with me because I'm not the most car savvy. How do I get at the tensioner or actuator I suppose in order to check it?