Grinding Noise when pressing the gas. - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 12-07-2009, 06:50 PM Thread Starter
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Grinding Noise when pressing the gas.

alright i got a 99 f250 PSD 212000miles starts like a champ ran great untill today. i was running into town to pick up my little brother and turned the corner next thing i knew as i got near 30mph it started making a strange growling noise... i didnt think anything of it picked him up and came home.

parked my truck by my garage and put it in neutral reved it slightly up to 1500 rpms... heard the dang grinding sound again.... whoever had my truck before cut the exhaust right below the cab and it sounds like its coming from there could it be my turbo? my wifes already pissed because ive bought so many cars that in her mind are "crap"
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post #2 of 18 Old 12-07-2009, 07:14 PM
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Have you got an automatic or standard transmission? Makes me wonder about the torque convertor if its an automatic.

The turbo you can check by removing the intake hose on it and just grabbing the turbo wheel and seeing if its got any major endplay/side to side play and if its been hitting the sides of the inside of the turbo housing (do all of this with the motor off by the way). If its so worn that you're hearing it then it should be burning oil in it as well from shot bearings in the turbo and blown seals. That's why it makes me think to look somewhere else other than the turbo. Could your exhaust just be rubbing up against something?
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post #3 of 18 Old 12-07-2009, 08:12 PM Thread Starter
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I have the 6 speed tranny and it only seems to do this when i maintain a certain rpm
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post #4 of 18 Old 12-07-2009, 08:25 PM
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does the noise change if you hold the clutch in or put slight pressure on the clutch pedal (take the slop out)

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post #5 of 18 Old 12-07-2009, 08:29 PM Thread Starter
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Not really too much I would check the inlet to the turbo tonight but I have to be at work in 30 minutes I hear a whurring noise from the tuirbo then it grinds untill I push the accelerator a little harder. Its kind of haard to explain
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post #6 of 18 Old 12-08-2009, 06:24 AM Thread Starter
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Alright guys got out this morning and pulled the intake hose off to check the play of my turbo... i have very very very VERY miniscule movement in either direction in/out or left/right it spins freely and none of the blades look thrashed in any way.... now for that stupid noise it still hasnt stopped....
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post #7 of 18 Old 12-08-2009, 06:51 AM Thread Starter
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I just realized/found out i live by a HUGE turbo dealer/mechanic called "Turbo Supply Inc." and they said they would do a rebuild for me for approx 500 dollars does this sound reasonable?
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post #8 of 18 Old 12-08-2009, 07:15 PM Thread Starter
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im just walkin in the dark here i dont know if the turbos bad or not just grasping for straws... its not reeally affecting the way it drives it just drives me nuts when people look at me cuz its grinding
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post #9 of 18 Old 12-08-2009, 07:36 PM
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dude if there's virtually no play in the turbo and it spins freely then I doubt there is anything wrong with it.

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post #10 of 18 Old 12-08-2009, 07:39 PM Thread Starter
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but im tellin u its the most annoying sound in the world when it grinds like its doing.... could it be turbo lag? its just rediculous grinding
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