Weird noise...where's it coming from?

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Old 11-16-10, 01:53 PM
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Weird noise...where's it coming from?

I have a 2001 Ford Explorer Sportrac. There is this noise that sound like metal rattling somewhere around the engine. I replaced the idler tensioner pulley and another pulley that was bad. I had Autozone listen to it and they told me that it wasn't the alternator and that it had to be in the pulley system. Well its not and I can't figure out where its coming from. Any suggestions would be great. It gets louder when driving down the road rather than just idling.
 
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Old 11-16-10, 01:59 PM
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(Quote) It gets louder when driving down the road rather than just idling.

Possible upper valve train issue
better not to guess
noises can be difficult to pinpoint

can you post a "You Tube" video of the sound?
 
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Old 11-16-10, 02:25 PM
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I don't think that it is in the upper drive train. I could be wrong but I really don't think so. I wish I had a way of putting a video on youtube. I don't know if I know how to do that.
 
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Old 11-16-10, 03:31 PM
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Catalytic converter heat shield vibrating? Not sure if Fords timing chains, but sometimes when the tensioner is getting weak, the chain will slap the timing chain cover. But normally, this sound goes away when giving gas.
 
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Old 11-16-10, 07:30 PM
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The crank pulley drives everything, via the serpentine belt..Remove the belt tension and see if the noise continues or abates..
Then, if necessary check the cam drive.
As ofter said, noise can be difficult, it travels, it can be erratic, it can be temperature dependent, and everyone interprets if differently.
But noise can be isolated.
 
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