Turbo making Whooshing noice when accelerating - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 09-28-2012, 02:34 PM Thread Starter
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Question Turbo making Whooshing noice when accelerating

this is my first time posting on this forum and am looking for any help, you all can give me. i have a f-250 SD 6.0 PSD. 2007. been a great truck no problems. until recently. had to put repair FICM, Ed @ FICM repair fixed for me great guy to work with. got it back put it on starts great, but now i have this noice from turbo area under acceleration a "whooshing" sound checked Y pipes, intake hoses, they seem to be all good. could this be a sensor?. when i unplug the vgt on top of turbo sound goes away, but power is lost which i understand that happening. never had this issue before having FICM repaired. is it coincidence or not. any suggestions would be greatly appreciated.
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post #2 of 5 Old 10-02-2012, 04:23 AM
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To eliminate possibility of coincidence...

Change the FICM. Personally, it wouldn't surprise me if that is indeed the problem. REPAIRED FICMs are a bit of a gamble. Just think about what's been done.....someone opened a computer (that's what the FICM is, after all) and fiddled with the guts....probably soldering the capacitor banks, and a few other "questionable" areas know for solder cracking. This is all well and good, but solder likes to pop every now and then...and it only takes a small chunk of loose solder floating around on a printed circuit board to cause problems. And NOT Always is it a case of loose solder joints...caps and components go bad....the repair guy could have missed something. Does he have a means to test the full function of the FICM after the repair? Not too many individuals have that level of testing equipment.
I work on these 6.0 for a living. I have never advocated the use of "repaired" FICMs....and I DONT have any stake in parts sales.....so that isn't the reasoning. Unless you know for sure EXACTLY how the repair was performed, AND more importantly, how was the repair VERIFIED for proper function before shipping back to you... then you can't rule out the possibility of the FICM being responsible for the new noise.
It could be simply that something in the ficm is changing a value that the pcm sees just enough to delay or mess with the bypass function of the turbo. Which sounds like what you have going on.....the whooshing noise should cycle in and out during idle to control engine temp...but defeat its activity when the accelerator pedal is depressed off idle.

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post #3 of 5 Old 10-02-2012, 04:29 AM
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If you can check your shaft end play on your turbo. Look for marks on your inlet housing of your turbo. I had a "whoosing" sound on mine and it was the compressor wheel rubbing agaisnt the inlet housing.

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post #4 of 5 Old 10-02-2012, 04:37 AM
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i know TONS and TONS of people have had great repairs done by ED and i know he does test his FICM's i am still on my original FICM so i am not one of his customers i have just read many good reviews... as for the wooshing... no loss in power? boost running higher or lower? more smoke from exhaust? i dont think its a sensor... perhaps all your connections are not as good as you think? maybe a boot is cracked or something and you just cant see it.... i would check again..

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Thanks bigblack for selling me your truck!
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post #5 of 5 Old 10-02-2012, 05:07 AM
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I am sure....

that Ed is most likely a really great guy.....but personality has nothing to do with it....nor does any reviews good or bad. Unless you have a crowd of people all claiming that he wears flowing robes and has walked on water....then he is just a human like the rest of us....and that means that he can make mistakes just like everyone else. No need to defend someone here.
I have always prided myself on a career average of less than 2% return/failure rates on the work I do.....but I would like it to be "0" return/failures....however, I am no where near perfect, I just try to be the best I can.... It just doesn't always go as planned.
I merely stated opinion...and possibility. It IS possible, it may not be likely, but the most direct way to eliminate the possible is to change the variable. Try a different FICM would either change nothing, or eliminate the issue.....if the former, then put the FICM back and no harm done...and now the further investigation continues.
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