High pitched sqeal?!?

[sloch24]

Anyone hearing a very high pitched squeal when driving around 60MPH? It kinda sounds like it's coming from the drivers side engine compartment, but I'm not sure. It's not very loud, and sometimes it comes and goes, but it's enough to drive me nuts! (As they say, when you don't have far to go!)

I noticed it from day one, but today it seemed to happen for over 30 minutes on the way home from lunch.

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2009 3500 Quad Cab Long Bed 6.7L 3.73 SRW
B&W Turnover Ball / 5th Wheel Companion
Tekonsha P3 Brake Controller

[AllDodge]

Squeal, well I'll take a wild shot at it. Wondering if you have a vaccum leak. Does all of your A/C controlls work properly, and does the cruse contol work?

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2008 Dodge 6.7 Cummins 2500 Quad 4X4 , Laramie, 12K MileMarker Winch

Sold 2000 5.9 Cummins w/ 181K, 4in exhaust, VanAkein chip, bosch injectors, K&N, gauges

[dieselpower7.3]

i think i might have somthing similar, mine happens around 2k rpm and it stops when the ac compressor cycles on and off

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06 qc 4x4 g56 edge juice hot unlock smarty sbc dd 3600 strapped centerplate no more chatter! htt 62.65.12 2nd gen manifold leveled 35's 6"single new numbers comin soon

[sloch24]

Originally Posted by AllDodge

Squeal, well I'll take a wild shot at it. Wondering if you have a vaccum leak. Does all of your A/C controlls work properly, and does the cruse contol work?

Everything works as it should, it doesn't matter if the air is on or off, and cruise works perfectly.

It doesn't sound (to me) like an air/vacuum leak. It sounds more like a servo squeal. It's very high pitched and the pitch is very steady.

Next guess?!

btw: I'm not guessing that it's a servo squeal, I'm an electrician, and to me, that's what it sounds like. (just to make things clear)

__________________
2009 3500 Quad Cab Long Bed 6.7L 3.73 SRW
B&W Turnover Ball / 5th Wheel Companion
Tekonsha P3 Brake Controller

[sloch24]

Originally Posted by dieselpower7.3

i think i might have somthing similar, mine happens around 2k rpm and it stops when the ac compressor cycles on and off

I'm no where near 2k, I cruise at 60mph at about 16 - 17k. Also, it doesn't seem to coincide with the a/c.

__________________
2009 3500 Quad Cab Long Bed 6.7L 3.73 SRW
B&W Turnover Ball / 5th Wheel Companion
Tekonsha P3 Brake Controller

[Compcowboy]

do you have an egr delete? If so how thick are the plates? You may have a boost leak.

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691 Hp 1200+ Tq - 2007 6.7 TWIN TURBO DUAL CP3 2500 Bighorn 4x4 6-spd Manual, 64/71/14 over a S400, Airdog 150, ARP Head Studs, TS MP-8, Airbags with Dual Control Air Comp., H&S Delete & Downpipe, What EGR?, Valair Dual Disk, Amsoil Bmk-11 Bypass, 295/70/R17 Toyos on Walker Evans Wheels,6" Aussies & Hushpower Muffler & DiProcol Gauges & 120HP nozzles (Installed!) Thanks to Wally At FTEDiesel!!!!! PMT is gone, Smarty is Gone!, H&S TO THE RESCUE! Black Maxx on the way.

[sloch24]

Originally Posted by Compcowboy

do you have an egr delete? If so how thick are the plates? You may have a boost leak.

No deletes, everything is bone stock. I don't have a clue about any plates or how thick they are..

I think it's still there when I let off the accelerator, but I'm not 100% sure.. that would rule out a boost leak, right?!

__________________
2009 3500 Quad Cab Long Bed 6.7L 3.73 SRW
B&W Turnover Ball / 5th Wheel Companion
Tekonsha P3 Brake Controller

[ClayCountyCummins]

i get a real high pitched whislte that sounds like my windshield has an air leak in it, and i know it isnt the whistle from my turbo or air intake...

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-2008 Dodge 2500 Cummins 6.7L Quad Cab SLT (Super Black) with lots of go fast parts...big tires and lift

[txrlk]

I've had the same issue on several occasions. It usually occurs when I'm accelerating but so far I've been unable to locate the source but I suspect that I have a boost leak.

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2007.5 6.7 auto 3500 SLT Quad Cab DRW - BADP Gen II - EGR MIA - Edge w/attitude = 2004 Suzuki XL-7 = 2001 Pathfinder SE 4x4 - 2008 Jeep Wrangler X Unlimited.

[diablojoec]

Just a quick thought, my tow mirror on the drivers side when flipped up whistles and i guess it could be called a squeel... Just an idea...

Thanks Joe

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White 2004.5 cummins, auto, mostly stock, preditor/ puck stack, 5" FBD, BD lift pump.

[JR.]

EGR cooler gasket bad?

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2007.5 6.7l 3500 Dually Lone Star Edition 4x4 G56. S&B C.A.I. H&S Stage II/Pressure Box. E.G.R. unplugged! EGR Cooler Removed

[sloch24]

Originally Posted by diablojoec

Just a quick thought, my tow mirror on the drivers side when flipped up whistles and i guess it could be called a squeel... Just an idea...

Thanks Joe

Up or down, the tow mirror doesn't seem to affect it.

__________________
2009 3500 Quad Cab Long Bed 6.7L 3.73 SRW
B&W Turnover Ball / 5th Wheel Companion
Tekonsha P3 Brake Controller