Introduction. Have some questions - Ford Powerstroke Diesel Forum
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Old 01-29-2007, 08:44 PM
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Introduction. Have some questions

Hello,
I found this site by accident while looking for some information on my truck. After spending three hours reading various posts, I decided I had to join. It seems like there are a lot of great people as well great information here. I live out on the Olympic Peninsula across the water from Seattle. We love our diesel trucks here and with diesel selling for $2.09 per gallon, who wouldn't?My truck is a 2003 F350 6.0 with 4" spring hangers in the front and 2" blocks in the rear (should have done 3" in rear). It has a custom fabricated track bar as well as a dropped bracket. It has 35's on 16X11 rims. The motor is pretty much stock other than an AFE intake and 4" exhaust with straight pipe. Here is my question. Shortly after installing the exhaust, I noticed a buzzing sound coming from the area of the turbo. It sounds like one of the heat shields is vibrating but I have checked all of them and they are all tight. It only does it under a load such as going up hills. All of the exhaust hangers and clamps are tight and not touching anything they shouldn't be. In addition, I have noticed that when I shut the truck down I can hear the turbo spinning down to a stop. I verified that it is not the fan clutch as I initially suspected. Truck is running great and mileage is the best it has been. I have 19k on it now but the turbo was replaced at about 8k but I just realized the "new" turbo has a remanufactured sticker on it The sticker was on the back and can only be seen with a mirror(I'm a dentist, I use mirrors for everything). If the bearings in this turbo are bad, you might find an AFE intake system for sale very soon. Any thoughts would be appreciated.

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Old 01-29-2007, 08:52 PM
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Well, you have one of the rare 6.0 turbos that whistle like a blue bird. Not sure what the rattle is, but I am sure someone will be along shortly that can help you out. As for the diesel price, I wish we had that here. Welcome aboard, and sit and stay a while.
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Old 01-30-2007, 03:17 AM
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Quote:
Originally Posted by thetoothdoc View Post
(I'm a dentist, I use mirrors for everything)


WELCOME to Powerstroke.org! Great to have you on board with us.

I'm not a Tech so I we'll have to wait for the smart guys to help answer your questions, although you can hear my turbo spinning down when I shut my rig off as well.
Enjoy the site Doc!
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Old 01-30-2007, 02:20 PM
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Welcome to the site. IFor the buzzing I would check the clearance of the downpipe. near the trans tunnel. The downpipe might need to be twisted a bit. Keith
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Old 01-30-2007, 02:33 PM
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Welcome to the site. I would play with the accelerator and brake and try to replicate the sound while you are sitting there. Chock the wheels and put the parking brake on if you can get it to do it especially in drive or reverse and have someone go under it and with gloves grab the exhaust or pry on it. I get a lot of them in after they have exhaust put on and that is the best way to find an exhaust noise concern.
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Old 01-30-2007, 02:38 PM
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I'll second checking the down pipe. Mine did this at first when I installed my mbrp. It wouldn't do it at an idle, but under load when everything is "torqued" just a bit it would rub ever so slightly to the passenger side. Loosened up the clamps just a bit and gave the pipe a twist away from the heat shield and had someone else re-clamp as I held it in place. No more problems. Not positive this is your problem too, but something to consider. Hope this helps, good luck, and... to the site!!!
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Old 01-30-2007, 03:05 PM
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Old 01-30-2007, 03:08 PM
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Welcome to the Forum.

I third the downpipe! I have spent several hours under my truck adjusting my pipe. It still rubs in reverse, but I can live with it. You should be able to hear the turbo spin down with a straight pipe. If it stops spinning, then worry about the bearings.
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