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Topic: High pitched sound

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harpoon
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Posted: Jan 17 2011 at 7:53pm \| IP Logged

Hi all, got a 2007 Frontier. was in the garage tonight putting air in my tires and with my ignition on ( car not running) I noticed a high pitched noise coming from the engine area but couldn't pinpoint where.

Anyone have any ideas as to what that might be?

Oh, I should mention I turned my radio off and my thermostat fan off.

Thanks

Harpoon

frontierguy
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Posted: Jan 18 2011 at 8:18pm \| IP Logged

If everything is functioning OK, don't worry, most likely
normal. They make all kinds of noises at times.

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'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.

Nissan Technician 25 + years
2011 John Deere X720SE

banditta66
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Posted: Feb 09 2011 at 10:00pm \| IP Logged

If the noise is engine speed sensitive, and sounds like a gear whine, it is your secondary cam timing chain tensioners. Do you hear it when you are in park and blip the throttle? The tensioners are made of nylon/plastic and get eaten away by the chain. The whining noise is the cam chain rubbing against the metal plunger that supports the tensioner. This is a known Nissan issue on the 4.0, especially 2005-2006. Unfortunately it's about a $1200 repair if you are not under warranty. I wouldn't wait too long on it, although I never found anyone that had broken a chain on the interwebs.

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