So about a year ago I threw my serpentine belt, at the time I replaced the two freewheeling pulleys and the belt tensioner. A few weeks ago I threw the belt again, had it towed and they changed the belt and sent me on my way, saying there isn't anything wrong that they could tell. But every now and then right after restart, particularly when it was warm I would hear a screech just as it was firing up. Still I saw no pulleys that were acting up. I did see a little jumpiness to the belt tensioner, but minor. So now I have a total new noise, best I can describe it, it sounds like when you throw tiny rocks into a metal fan, it starts on cold start and fades away when it warms up. I cant tell exactly where its coming from, kind of sound like it may be coming from the front of the engine somewhere. I'm wondering if its the newer belt tensioner, the alternator decoupler, or the fan itself. Does the alternator wear out and seize like an when an electric motor does when the brushes wear out?? It may be totally unrelated, but I know the other day I was driving and completely lost boost, I changed all of the fat intercooler lines, and that seemed to make it better. I also changed the turbo resonator to the solid aluminum one. The engine seems to run okay, maybe a tad bit more vibration then usual, and I do have a slight idle rpm variation. But I'm not sure if that's normal. The harmonic balancer seems solid, I cant move it anyway. I had the engine bay cleaned yesterday, on a cold engine, I'm hoping that didn't do it...I'm perplexed as hell...Oh that's right, I own a Sprinter! Anyone have any thoughts?
2005 Dodge Sprinter
122K
2005 Dodge Sprinter
122K
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