Question about Honda Pilot

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Soft whistle under hood

While pressing on accelerator you can hear a soft whistle and if you are at complete stop and start letting go of brake you still can hear it while car is moving on its own

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  • Honda Master
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Check for vacuum leak in hose to the brake booster or brake booster diaphragm.

Posted on Jan 04, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Water sounds under hood when you first accelerate

Thank you for allowing me to assist you with your issue.

Since you have described that there was a buildup of leaves under your hood, my experience here indicates that the "cowl drains" are also plugged up with debris. The "cowl" is where the air enters the heater box intake (this is the area under the hood, in front of the windshield, with a black screen-looking thingy under the wipers). Since air has to get in here, water & debris can also get in. There are drain areas on both sides of the cowl (in the corners) to eliminate water from building up in the cowl area. Try this: Take a bucket of water, and dump it under the windshield area where the screen is on the cowl panel. Look behind each of the front tires for water draining onto the ground. You should see a very steady stream of water on both sides. If not, you may have to take a garden hose & spray vigorously until the debris is carried thru. You could also take off the wipers and the plastic cowl panel for easier access to the corners where the drains are blocked. In any case, a large volume of water will usually make its way thru the blockage. This will cure your issue. Please repost if you have any further questions, or need additional assistance; glad to be of service to you.

Posted on Oct 14, 2008

emissionwiz
  • 76846 Answers

SOURCE: making a knocking noise

This is most likely either a piston noise or a connecting rod bearing knock

Posted on Oct 21, 2008

juncro
  • 467 Answers

SOURCE: Knocking noise from under hood

ok the lifters are making noise, make sure you are using the right oil for your temp zone. also add some lucas oil to your engine oil, it will quiet down the engine.

Posted on Jul 31, 2009

  • 1 Answer

SOURCE: engine or transmission knock / rattle upon

I had the same problem on my 2006 Lucerne and it was the engine mount located on the front of the vehicle behind the radiator.

Posted on Aug 24, 2009

  • 400 Answers

SOURCE: Squeal under hood 2000 Pontiac Grand Prix GT (3.8 L)

I would start with a belt. While removing it feel how much tension the tensioner has on it, on the 3800 egnine they have a stiff tensioner(sorry I don't have any specs for how much) After you get the belt off you can look at all of the pulleys and spin them to see if the bind or look for stuff stuck in the grooves on the pulleys.
It sounds to me like the belt is streched. I would not recommend one of those gator back belts, they seem to make more noise sooner than a good v notch belt. But thats just my opinion!

Posted on Oct 25, 2009

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