Turbo still spooling after engine shut off - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 05-02-2012, 09:59 AM Thread Starter
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Turbo still spooling after engine shut off

Just finished adding hot damn 300, 5" turboback flo pro, afe cai to my 2010
F350. Runs like a scalded a$$ed ape now, I love it.. I have noticed that when I shut the engine off after driving theres a wooshing sound from the turbo I assume. Almost like a ceiling fan thats been turned off it just gradually spins to a stop. Is that normal?

And does anyone know of any mod friendly repair shops in Ft Worth area. I noticed a small oil leak yesterday while installing exhaust.
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post #2 of 7 Old 05-02-2012, 10:30 AM
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Turbos spin at several thousand rpm so they don't stop on a dime once the exhaust flow stops. One reason guys add a post lube system for turbo spin downs.

SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.

Last edited by Term3; 05-02-2012 at 10:43 AM.
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post #3 of 7 Old 05-02-2012, 11:15 AM
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When you drive some where and park, dont turn the truck off for about 30 seconds or so.... longer if you drive it harder...
I wait till my EGTs get below 300 before I shut my truck off... so long enough to grab like you wallet, take your belt off, blah, blah.....

Carl
2012 Raptor Supercrew....LOADED!!

TRADED IN...2008 6.4L F250, 4x4, CC, SB, SRW,4" lift, 315/70/17 BFGs, Mini Maxx, HOT DAMN TUNE, DPF delete, MBRP exhaust, Muffler Delete, Air Raid CAI, MBRP CAC pipe. 579hp/1323tq

1987 951,Roll cage, Heavily modded,300hp/314tq, getting bigger turbo hoping to get to 400hp

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post #4 of 7 Old 05-02-2012, 02:31 PM
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Yup its normal, but it will lessen that sound if you let it cool down for a bit after you park, more importantly it's easier on them. I let my egt's get to around 300 as well, my truck only takes maby 15 sec. Let everything cool down a bit. I havnt heard of "post lube system". I have heard of people useing turbo timers though.

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post #5 of 7 Old 05-02-2012, 06:21 PM
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I'll agree with all the above! Yes it's normal, and my truck does the same thing.... I have grown rather fond of the spin down noise. It usually gets a comment from passengers in my truck something along the lines of "man this thing sounds like a jet engine winding down!" lol. I also keep an eye on my EGT's before shutting mine off.... I like it around 280*, and once again as already stated.... It takes 30 seconds or less.
Enjoy your newly awoken beast!

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post #6 of 7 Old 05-02-2012, 07:56 PM
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lots of good info here i too wait till my egt are atleast 300 or lower before shutting down. even then I can here the turbo wine down thru the exhaust for about 5 seconds after its shut down......i cant believe how many other diesel owners pull into the parking lot and they shut off there truck just as quick as they put it in park

01/07 Job 1 F350 H&S Tuned. ARP Studs, AFE 4'' straight pipe, EGR delete with elbow, AFE stage 2 CAI, 6'' lift on 37s, 20x12 Fuel Nuts two piece, Sinister coolant filter, CCV Mod, Projector headlights HID kit
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post #7 of 7 Old 05-02-2012, 08:21 PM Thread Starter
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Thanks for all the good info, will quit panicking thinking I screwed up my truck somehow..silly newbie.
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