Rattle noise about 3800 rpm and up

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Rattle noise about 3800 rpm and up

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Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> Silverado >> Rattle noise about 3800 rpm and up

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Rattle noise about 3800 rpm and up - 1/23/2007 4:51:22 PM

Z71chevyoffrd

Posts: 2
Joined: 1/23/2007
Status: offline

I have a 2002 chevy Z71 silverado 5.3L and when i really get in the throttle about 3700 rpm and up it starts making a rattling noise from the engine. kinda sounds like the valves are making noise And the check engine light will come on for about 10 sec. BUT when i dont get in the throttle it sounds normal and no check engine light. i talked to a guy who said it could be a nox sensor???

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RE: Rattle noise about 3800 rpm and up - 1/23/2007 5:59:45 PM

golfer

Posts: 610
Joined: 10/8/2006
Status: offline

The rattle noise is referred to as ping or knock. If your CEL was lit pull the DTC code and see if you have a problem with the knock sensor and / or something else.

(in reply to Z71chevyoffrd)

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RE: Rattle noise about 3800 rpm and up - 1/25/2007 6:24:24 PM

Riccas

Posts: 35
Joined: 1/8/2007
Status: offline

Check the DTC!!

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(in reply to golfer)

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