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Old 02-29-2012, 08:32 PM
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wierd sound

hi guys i bought a early 99 7.3 and it is awesome ! it does make an odd sound tho that concerns me untill it is very warm . I worded that carfully because it makes this shhh shhhh shhh sound intill you drive it for about 15 -20 min and is most notisable wile under very light throttle. while it makes this sound my rpm also drops by a couple rpm . it starts and idles fine. when idleing if you hold the rpms up to like 1700 rpm after a second or two the motor will make this hissing sound and the rpms will drop by like 300-400 rpm .if your driving slow while it does this you can literaly feel this hesitation untill it goes away . under lots of power or load it runs awesome and after a very good warm up it does'nt do this any more and runs fine . I dont know anything about these trucks but i was wondering if it has somthing to do with the turbo or waste gate ?
thanks for any help.
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Old 03-01-2012, 03:19 AM
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Search EBPV. Its normal.
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Old 03-02-2012, 03:55 AM
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thanks audiocontr

i unpluged that noisy thing . maybe ill do the the jake thing later but for now is way better. thanks again
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Old 03-02-2012, 04:00 AM
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yep what they said bud! look back on the turbo and you will see 2 wires going to it. just unplug it and no more sound!
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