Grinding noise at 1500 rpm's

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  #1  
Old 02-09-07, 05:42 AM
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Grinding noise at 1500 rpm's

I know its hard to diagnose something like this on the internet but I thought maybe you guys could give me some ideas. For about a week or 2 now I have been hearing a metal grinding noise coming from the engine area when the rpm's are at 1500. If its above or below 1500 there is no noise. I dont really notice it while I am driving, its most noticable first thing in the morning when the car is idle. You do not hear the noise until the engine is reved to 1500 and once its over 1500 it stops. I dont really think its the transmission but its hard to tell. Any ideas on what could cause this. The car is a 97 honda civic hx(automatic).
 
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Old 02-09-07, 07:33 AM
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It could be an accessory on the engine - alternator, power steering, etc.

I would remove the belts one at a time and see if noise disappears. Also check any idler pulleys you may have on those belts.

Another possibility would be the timing belt lashing the metal cover.

Hope this helps,

Bob
 
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Old 02-09-07, 09:00 AM
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check the flywheel, see if it is hitting something, like its cover, when you hit the gas, it flexes a bit and can rub here or there
 
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