99 7.3 replace turbo? shh noise no boost. - Ford Powerstroke Diesel Forum
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Old 01-13-2011, 06:14 PM
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99 7.3 replace turbo? shh noise no boost.

Okay so i have a 99 f-350 that when cold wont spin the turbo, or so it sounds, and makes a SHHHHHH noise. Then it will warm up and sound normal boost my 20 psi. It does however do this when its warm as well, usually when i lay off the gas and trying to cruise. This is my company truck and am totally screwed if it dies. Trying to pull my trailers when it does this, just doesnt work.

The trucks vin is a 99, but when i bought it i was told the engine was changed, and apparently there's w different 99 setups. I have an opportunity to buy a refurb turbo from my cousin for 200 bucks out of a 99. I was curious if this is my issue.

I own 2 turbo charged cars, eclipse and a talon, and when this happens on those, its usually the thrust bearings are shot and they need rebuilt. I am concerned however of this whole pedestal thing. not a friggen clue what the crap thats about. All i can find for identification on the turbo is it says 1.10 A/R and a huge serial number all scratched to heck and unreadable, then the model number of BBL10768 and it says allied signal. I cant however find any way to identify this thing. I googled my face off with all the details and i came across a used turbo on ebay for earlier years.

so first, whats my issue? toast turbo? sweet ill buy one and rebuild this one later. Or is it the pedestal thing ? If my cousin doesnt have the correct 99 turbo, can i buy it and will it fit? maybe swap out housings and use the good center section? i can take pictures of it if needed. im kind of in a sh** and a panick and searched like heck looking for info on this. I really appreciate it guys.

doesnt pull any codes, service engine light only comes on when im givin it the beans at like 3200 and higher, no way to check it tho.

Last edited by sinluien; 01-13-2011 at 06:42 PM. Reason: more info
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Old 01-14-2011, 12:17 AM
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Check out the sticky post at the top of the 99-03 7.3 motor problems forum.
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Old 01-14-2011, 12:26 AM
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you need a diesel scanner. that ses light comes on for a reason and the scanner you have isnt pulling it.


have you looked at the turbo fins and checked the shaft for play? im wondering if your exhaust backpressure valve is sticking. theres a 2 pin wire that goes to the turbo for that. unplug it to see if it makes any difference.
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Old 01-14-2011, 05:56 AM
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unplug your ebpv and see if the noise goes away
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Old 01-14-2011, 06:10 AM
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can i just eliminate this ebpv?
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Old 01-14-2011, 06:11 AM
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Yes
Do a search on gutting pedestal
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Old 01-14-2011, 02:12 PM
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The pedastel is just that, something the turbo sits on.
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Old 01-14-2011, 11:32 PM
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so, fixed the problem, however for some reason that disconnected has caused me to lose 5 psi of boost. thats interesting eh?
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Old 01-15-2011, 06:24 AM
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you should not lose any boost
check your boots for leaks,up pipes
i gutted mine because was leaking oil
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Old 01-15-2011, 08:23 AM
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no boost leaks
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