Question about 2000 Toyota Tundra

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Car makes loud humming noise when idling

When the truck is idling, there is a humming like sound that can be heard coming from the engine and when I accelerate, the noise seems to get louder. This humming sound almost sounds like a motor of some sort.

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  • 210 Answers

There can be a crack on exhaust manifold or on eghaust muffler.

Posted on Apr 11, 2014

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Posted on Jan 02, 2017

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SOURCE: car noise: loud grinding/pinging. Louder

Could be anything from a bad knock sensor to an internal engine problem. Try a stethoscope test if you can duplicate this racket while in park.....accordianman

Posted on Jul 29, 2008

  • 247 Answers

SOURCE: Why is my 2000 Toyota Camry making a Humming sound

when have you had tires put on last? you might be hearing them.

Posted on Dec 21, 2008

  • 1861 Answers

SOURCE: Idle and gear shifting 1987 celica automatic

I would suggest hat you replace the timing belt. The noise that you hear is the belt.

Posted on Mar 05, 2009

  • 6982 Answers

SOURCE: car has loud knocking sound

Here's what you don't want to hear...A loud knocking noise from inside your engine is generally caused by a crank or rod bearing...when caught very early, sometimes they can be replaced. however, once the noise is loud, the attending crankshaft journal gets "hammered" out of shape and the job becomes very expensive and in most cases more costly than engine replacement. There is one other item that can cause a loud knock...your flywheel. Bearing problems generally cause low oil pressure. If you have that, it's gone...if not, have the flywheel checked before sending the engine to the scrapyard.

Posted on Jun 14, 2009

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SOURCE: humming sound gets louder the faster i go 05 scion tc

Rather than guess witch one it is( sounds to me to be a wheel bearing or hub bearing) just chg. out both, but if it gets louder when you make a right turn i would say its the left side sense when you make a right turn you are putting more forse and weight on that side.

Posted on Jul 02, 2009

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