CONFUSED
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CONFUSED
ok heres my question, i know its probably been asked more than once but with my attention span i have, well hard to find what i am looking for.
so heres whats its doing just ever now and then it makes a hissing sound around 1200 to 2000 rpm? when your just chuging down the road normal, as soon as you get in the throttle it lags some then spools right up and runs normal. i have check for an exhaust leak, and cant find one, just got done cleaning the rubber boots on the plumbing. i have unplugged the warm up thing under the turbo and still does it. so could it be the waste gate? and how can i bypass it? so please help
so heres whats its doing just ever now and then it makes a hissing sound around 1200 to 2000 rpm? when your just chuging down the road normal, as soon as you get in the throttle it lags some then spools right up and runs normal. i have check for an exhaust leak, and cant find one, just got done cleaning the rubber boots on the plumbing. i have unplugged the warm up thing under the turbo and still does it. so could it be the waste gate? and how can i bypass it? so please help
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Joined: Oct 2009
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i unplugged the two prong connector underneath the vacuum lines at the base of the pedestal. heres some more info on it. when it does it and i press the clutch in and hold the fuel steady it still does it till i step on the skinny pedal. just like when the clutch is not pressed 
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
ok heres my question, i know its probably been asked more than once but with my attention span i have, well hard to find what i am looking for.
so heres whats its doing just ever now and then it makes a hissing sound around 1200 to 2000 rpm? when your just chuging down the road normal, as soon as you get in the throttle it lags some then spools right up and runs normal. i have check for an exhaust leak, and cant find one, just got done cleaning the rubber boots on the plumbing. i have unplugged the warm up thing under the turbo and still does it. so could it be the waste gate? and how can i bypass it? so please help
so heres whats its doing just ever now and then it makes a hissing sound around 1200 to 2000 rpm? when your just chuging down the road normal, as soon as you get in the throttle it lags some then spools right up and runs normal. i have check for an exhaust leak, and cant find one, just got done cleaning the rubber boots on the plumbing. i have unplugged the warm up thing under the turbo and still does it. so could it be the waste gate? and how can i bypass it? so please help
A hissing sound at those RPM's (assuming it's doing this sound even with a fully warmed up engine) is common if you have an open element intake.
Thread Starter
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Freshman User
Joined: Oct 2009
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its the factory intake system the only mods i have dun to the truck is air bags on all for corners, a ts performance chip, and gutted factory exhaust. and i have narrowed it down to something in the engine compartment area.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
i unplugged the two prong connector underneath the vacuum lines at the base of the pedestal. heres some more info on it. when it does it and i press the clutch in and hold the fuel steady it still does it till i step on the skinny pedal. just like when the clutch is not pressed
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Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Forgot to ask.... is it making this noise only when the engine is cold? Or does it happen on a fully warm engine too?
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