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Old 01-12-2022, 06:12 PM #16
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Quote:
Originally Posted by spartacus View Post
Its the vsv valve tick.
Interesting! Tell me more..

I know there are more than one vacuum switching valve on our trucks.

Are you talking about the VSV for the vapor pressure sensor on the charcoal canister?
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Old 01-12-2022, 11:01 PM #17
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Quote:
Originally Posted by cl4Rk View Post
Interesting! Tell me more..

I know there are more than one vacuum switching valve on our trucks.

Are you talking about the VSV for the vapor pressure sensor on the charcoal canister?
Yup the solonoid of the vsv valve by the charcoal canister, opening and closing regulating the vacuum to the intake manifold is what the noise is. In other models this valve is covered or in a spot to reduce the sound.
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Old 01-13-2022, 10:44 AM #18
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V6 making new noises, ticking and shrieking sometimes
Quote:
Originally Posted by spartacus View Post
Yup the solonoid of the vsv valve by the charcoal canister, opening and closing regulating the vacuum to the intake manifold is what the noise is. In other models this valve is covered or in a spot to reduce the sound.

So mine only ticks once the engine is warm. Something to do with open vs closed loop?
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Old 01-13-2022, 11:53 AM #19
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Originally Posted by cl4Rk View Post
So mine only ticks once the engine is warm. Something to do with open vs closed loop?
I think at first startup the fan is loud so you can't hear it as much but once it settles at idle reaching operating temp. It's easier to hear.
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