Strange Noise! Please help.

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Nov 10, 2006 | 09:34 PM

daleper

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Joined: Feb 2005

Posts: 47

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From: SW Asia, USN

Strange Noise! Please help.

I'm getting a strange noise that sounds like pressure building when I am crusing. It disappears on accelleration and when I get off the pedal. Has this happened to anyone else? Is this the wastegate hanging up or is it a bad sensor somewhere? Any Ideas anyone has would be appriciated. Thanks.

Dave

Early 99 PSD, 5" exhaust, small bank account

Nov 10, 2006 | 10:57 PM

AustinS

Laughing Gas

Joined: Jul 2003

Posts: 1,157

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From: Littleton, Colorado

Sounds like the exhaust back pressure valve. Its normal when colder as it helps the engine warm up a little quicker. Do a search and see if that fits.

Austin

Nov 11, 2006 | 04:54 PM

daleper

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Freshman User

Joined: Feb 2005

Posts: 47

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From: SW Asia, USN

Thanks, I'll try to search where I can. I"m not a supporter yet, so I can't search this site for now. Something about the servers.

Nov 11, 2006 | 04:57 PM

Muktown

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Joined: Jan 2006

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From: Elkhorn, WI

does it only happen when its cold outside with the engne not warmed up yet? it shouldnt happen with the engine at normal operating temperature

Nov 11, 2006 | 05:40 PM

daleper

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Freshman User

Joined: Feb 2005

Posts: 47

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From: SW Asia, USN

Temp doesn't seem to matter. It doesn't do it all the time and sometimes it stops as it warms up, but sometimes it keeps going once the engine is up to temp. I've been driving the truck for a few years during the same types of weather and it hasn't done it before.

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