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post #1 of 12 Old 10-29-2007, 05:18 PM Thread Starter
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Question Discovered a problem!

Well I actually had 2 problems. When I am at 65mph cruising on the highway, every time I lightly tap the brake, it jerks violenty. Second when I am just driving around I hear like a flute sound coming from the turbo area.
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post #2 of 12 Old 10-30-2007, 12:31 AM
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first thing is normal because I think you just installed custom tunes via xcal2. the flute noise ins't normal however. any codes or can you get a video?

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post #3 of 12 Old 10-30-2007, 02:00 AM
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The "flute" noise you're hearing is probably an exhaust leak, usually in one of the flex joints in the y-pipe that feeds the hot side of the turbo. Look for exhaust marks against the firewall or back of the motor, or have someone give it a little fuel and see if you have exhaust smoke under the hood.

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post #4 of 12 Old 10-30-2007, 03:13 AM
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so can you explain the flute issue more in detail? what are your RPM's? how loud is it??


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post #5 of 12 Old 10-30-2007, 03:20 AM
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i think im experienceing the same thing and i belive its the compressor wheel

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post #6 of 12 Old 10-30-2007, 03:21 AM
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Originally Posted by darsey715 View Post
first thing is normal because I think you just installed custom tunes via xcal2. the flute noise ins't normal however. any codes or can you get a video?
what would custom tunes have to do with jerking violently

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post #7 of 12 Old 10-30-2007, 03:24 AM
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ditto on the above. it shouldnt be jerking at all. i have the SCT with custom tunes and my truck doesnt jerk at all.


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post #8 of 12 Old 10-30-2007, 09:58 AM
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there was a thread on thedieselstop where the guy was asking why it felt like his truck was jerking when he would turn his cruise off via brake or the button and eric posted in the thread describing why it did it. I remember cuz I posted in the thread and was experiencing the same thing.

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post #9 of 12 Old 10-30-2007, 11:02 AM Thread Starter
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its wierd, and the same problem happened when I had the power pup, with stock lift and tires
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post #10 of 12 Old 10-30-2007, 02:07 PM
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now that i think of it, when i went home on vacation, i had the street tune on and when i would hit coast on the cruise control, it would act weird. kinda jerk a little, but only with the cruise put into coast mode and it would only happen when the button was first pushed. no issues now so i am not worried about it.


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