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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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epman01
Join Date: Jun 2010
Posts: 3 el paso, tx
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2010-06-22          171718


As I accelerate my F250 7.3 '03 it has recently began making a noise that sounds like my engine is revving but it isn't. The engine continues to have it's typical sound with this new one at the same time. After a while it goes away. What could this be ? I already changed the oil, oil filter, air filter and fuel filter. Anybody had this problem before ?

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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Murf
Join Date: Dec 1999
Posts: 7142 Toronto Area, Ontario, Canada
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2010-06-22          171722


Do mean a sound sort of like a small jet engine, almost a loud air rushing sound?

It's called the "EBPV" Exhaust Back Pressure Valve. It is supposed to limit how much boost the turbo can develop, thank the nice people at the EPA & CARB for it.

They are independently operated seperate from the turbocharger itself and sometimes sort of develop a mind of their own. I don't know in what year they changed them, but some are vacuum operated, some are electrically actuated, it doesn't seem to matter, both are prone to the issue.

It's not an issue other than the annoyance factor.


Best of luck. ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
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2010-06-22          171737


Murf does my Cummins have this system? ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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Murf
Join Date: Dec 1999
Posts: 7142 Toronto Area, Ontario, Canada
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2010-06-23          171743


Yup, it sure does Jeff.

Almost any turbo diesel has something similar, in the 'old days' it was nothing but a safety valve so you didn't over-boost and blow the motor. Today it's part of the emission control........ stuff. :(

One of the younger fellas that works for me 'inherited' his Dad's Dodge, first thing he did was start modding it up some. First thing he did was take the cat & muffler off his truck, now his EPBV opens and it sounds like a 747 taking off.

He thinks it's cool. I told him to keep his foot out of it till he was a ways down the road from the office or any job sites.


Best of luck.

....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2010-06-23          171747


Is it destructive to the engine? (I know what you mean about our help being idiots). ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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hardwood
Join Date: Dec 2002
Posts: 3583 iowa
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2010-06-23          171752


There is a kid in our town who has a Dodge/Cummins four door, probably a year old. I don't know what all he's did to it but it is LOUD, with a big capital "L". There is a stop sign just up a bit from our house that he loves to catapult from with enough black smoke to camafouge a fleet of destroyers. ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2010-06-23          171764


I'd encourage him to do it more. That way when he blows a trans and or an axle he'll be out of commission for awhile. ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2010-06-23          171765


Murf did you feel the earthquake today? The media says we felt it in Detroit highrises; I was 20 miles SW of Detroit and didn't feel it--'course I was napping :) ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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hardwood
Join Date: Dec 2002
Posts: 3583 iowa
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2010-06-23          171772


Maybe it was Ford Motor crashing down to join GM. The local news claimed poeple in NE Iowa felt it, but I must have been napping too, I didn't feel anything. ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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hardwood
Join Date: Dec 2002
Posts: 3583 iowa
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2010-06-23          171773


EW;
That's a good idea, maybe I'll tell him how much I enjoy his window rattling sound and enough diesel smoke to rival a hot rod tractor pull tractor. That little Cummins must be a tough little oil burner, so far. ....

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7 3 Diesel F250 03 - Weird noise sounds like engine is revving

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epman01
Join Date: Jun 2010
Posts: 3 el paso, tx
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2010-06-24          171780


So can this annoying new noise be fixed ? Also, in addition to this noise the truck has a repetitive vibration that comes and goes at certain intervals. It never did this before. Ever since this began the truck feels a little forced and slower. Any ideas ? ....

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