Weird whistle - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 05-18-2012, 06:21 PM Thread Starter
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Weird whistle

So my question is about a whistle sound when I pull my fifth wheel. In august last year, took trip to the river. When I have truck in tow/haul mode, cooling fan cycles more often. And I also get this whistle sound that comes and goes. Louder than turbo whistles. Sounds like its cycling something, but not sure what the whistling is. Truck was completely stock at the time. Have turbo back exhaust and cold air intake now. Plus insight cts with egt. (and php ficm atlas 40 tune) (in about a week) so ill be able to monitor things. But I have no idea what that cycling whistle was. Any ideas? Always great info on this forum
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post #2 of 7 Old 05-18-2012, 06:39 PM
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Degas bottle cap maybe, but usually not that loud, a bit subdued. Turbo flex pipe maybe?

Sent from my SCH-I500

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #3 of 7 Old 05-18-2012, 06:58 PM Thread Starter
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Flex line .... Like silicone intercooler boot? If its degas cap, .. means blown egr cooler or head gasket failure.. hope not that. Very loud in cab. Do the 6 o's have waste gates? And do they whistle?
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post #4 of 7 Old 05-18-2012, 07:09 PM
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The flex line he is referring to is the exhaust up-pipe and y-pipe expansion joints, looks like a shop vac hose. Over time thru heat cycles, the metal becomes brittle and cracks or breaks.

To check them, either look for soot around joints or firewall, and/or when the motor has cooled down start up truck and climb on the motor and feel for exhaust leaking.

Here is a pick of the "flex joints"/expansion joints.

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #5 of 7 Old 05-18-2012, 07:14 PM Thread Starter
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Where Is that in the engine compartment? Sorry, this is my first diesel. Just bought last june
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post #6 of 7 Old 05-18-2012, 07:15 PM
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Quote:
Originally Posted by onealmx11 View Post
Flex line .... Like silicone intercooler boot? If its degas cap, .. means blown egr cooler or head gasket failure.. hope not that. Very loud in cab. Do the 6 o's have waste gates? And do they whistle?
Flex pipe is metal coming from the exhust manifold, could also be one of the"boots". 6.0's have a variable vane setup inside the turbo, no waste gate. Others will chime in. you need something to monitor ect and eot, like edge insight. Essential on the 6.0.

Sent from my SCH-I500

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #7 of 7 Old 05-18-2012, 07:19 PM
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If you want to get to know your 6.0 parts locations, check out this link. Start with the 2003 bible and work your way up thru the '04 and '05.

http://www.forddoctorsdts.com/articl...icle-06-08.php

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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