Is it normal to hear a little turbo noise under moderate acceleration? I hear a slight whining noise when pulling away. I tried to wiggle the turbo vanes but there's really not a lot of play. The heavy plastic connector from the turbo to the air cleaner is tight and has no cracks. No heavy smoking either. Not a terrible sound mind you, I just don't recall if I had been hearing it before. I was thinking the tranny too, but the pitch of the whine doesn't change much after the trans has shifted up a gear.
Thanks

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1985 300D 197K - Semi-Daily Driver Diesel
1998 Volvo V70 AWD 226K - Daily Driver 2
1998 Volvo S70 140K - Wife's DD
2003 GMC Sonoma ZR2 Option - Rusty Truck
THE BABY 1958 220S Sedan 66K All original, never restored and never will be.

What you describe isn't ABnormal, put it that way. The car didn't make that sound when it rolled off the dealer lot, but it comes to a greater or lesser extent with age, based on my experience.

My current car is an '85 like yours with 102k and I cannot hear the turbo. My '79 SD was like yours is now, all 8 years I owned it. On acceleration my '83 SD sounded like the highway patrol was about 10 seconds behind....

The only thing I would mention to check would be the turbo inlet hose, but as you looked at the vanes you've already had that off and on so it must be tight.

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

Leaks in the Intake Manifold or other Turb Connections on the pressure side of the Intake can cause the Turbo to over speed.

I thin it is also possible for the Exhaust to make nose if there is a tiny split in the expansion Joint at the Turbo.

When the Engine is cold spray the intake down with a mix of Water and Dawn Dish Soap to make a mix that can bubble.
Unfortunately the Formula My Wife uses for Her Day Care Class is 1 gallon of Water to one cup of Dawn. I will let you reduced it to a more manageable amount.

If you a leak when you reve the Engine to produce boost it should bubble.

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84 300D, 82 Volvo 244Gl Diesel

Mine sounds like a 747 at full take-off....:-)

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

It's a common for the '85 to have a whine because of an incorrectly functioning Air Recirculating Valve (ARV). The easy fix is to disconnect the vacuum line to the turbo and plug up the ends. This disable the ARV and should stop the whine.


.

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1983 123.133 California
- GreaseCar Veg System

i <3 turbo whine!

since i put in my hot air intake, i get to hear that sweet music at every take off.

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped

If you remove the Hood Pad it will be louder.

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84 300D, 82 Volvo 244Gl Diesel

long gone way before i ever got ahold of this car. like i've said before, i've seen nicer cars than mine in the junkyard.

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped

Double check your over boost protection, make sure your air cleaner is secure and all it's hoses and oil drainage is secure.

As the others have said, you may just have a loud turbo. Mine whines every so often when I romp on the accelerator at 2500 RPM.

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Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)

Does the hood pad make that much difference???? My folks bought me one for my recent birthday, but I am yet to install it....

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

When I bought mine 7 years ago, I could only hear the turbo when cruising steadily at exactly 65 mph. Now I can hear it from 60 to about 70. I haven't checked for boost leaks, but if I have any, they must be small, since performance hasn't suffered.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.

leaks will not affect performance, they will affect longevity. any leaks allow Dirt past the air filter...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Usually this manifests itself as more of a whistle but its worth checking!

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I have read that it doesn`t make any decrease in the noise level, however when I installed a new one on the 240, it really did make a noticable difference.

I have the Turbo pad on it and don`t hear the Turbo Whine now.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I am going to get my new pad on next week and I will report back then!!!!

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership