Ok, i still have this whine and i am now starting to think it has nothing to do with my fan clutch or my smog pump. I have done some reading and thinking and i think it could be a fuel issue or even a throttle body issue. Reason is this...yesterday on my way home i was going up a small hill...the truck had zero power no matter if my foot was on the accelerator or not. Just now power under load. I have also noticed a low muffled sound that sounds like it could be coming from the manifold. Would a leaky manifold cause a lack of power as well? Just trying to think of as many issues as possible. Thoughts? This friday i am doing a compression test, setting the timing and checking for leaks. Has anyone with a 3fe cleaned there throttle body or intake?