See if this hits any cords with you guys, I haven't had a chance to pop the hood and investigate yet and this only happened for the first time maybe Wednesday morning.

Upon starting my car in the morning I get a noise coming from the engine bay that is out of the ordinary. It sounds like a spinning part and goes away in a matter of maybe a minute.

If I start the car in the morning I'll hear it, it's loud but does not change the performance of the car. Oil pressure and temperature are ordinary for the 40 minute drive to and from work and the noise goes away after maybe a minute of driving in the morning.

Today when coming to a light after being on a highway for 30 minutes (where everything sounded fine/performance fine/gauges fine) I heard it again for a few seconds while idling.

To me (and I could be way off, I know enough to be dangerous there are much more qualified individuals on this forum that would know more than me) it sounds like a dry bearing being moved around and maybe once the car starts moving a bit whatever fluid is used to prevent the friction comes back and it stops making the noise.

Again I will probably hear it for a second or two starting my car up after work today too, in which I may video record it with my Flip -- not that the sound is that great on the flip but it may help.

EDIT: This is on my 1987 300TD

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'87 300TD Estate (Panzer Wagon, Sold)
'95 E320 Estate (Sabertooth, Sold)
'94 E500 (Stark 1, For Sale)
'04 VW GTI (Rhino, Sold)
'12 VW GTI Autobahn (Shadow)

Could it be a belt? I generally avoid the belt dressings, but they can be helpful in determining whether a given noise is belt-related. You can also use a candle and hold it against the belt as it spins... the wax will quiet things down without (in my case, anyway) harming the belt or letting it slip.

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)

could be a pulley bearing

pop the hood and stick ur ear in there lol

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1985 300D - 599,xxxk - blue interior #265 Monark Nozzle, AL129X, 15" Ronals, Gen II Big Brakes hunting
1985 300D - 491,xxxk - in prog-{A-A IC, 3" exhaust, psi\pyro, 28*BTDC, Hella Euros, IP Limiter removal
1985 300TD - 783,xxxk - parts car,used new engine with ALDA cap inplace
1987 Kenworth T-600 8LL 425 CAT Mech. - 6,000,000+k - DEI exhaust wrap, punched through resonators, 1 recent rebuild,

Thanks for your responces, and I apologize I forgot to mention I am talking about my 1987 300TD (going to edit post now).

@cscmc1 - that is a super slick move, I never thought of that before! I would suppose as long as you don't get wax on the inside of the belt it won't slip. Interesting tip!

@1985300D - Pulley bearing was actually my first thought -- again I wanted second opinions though -- what's the worse that could happen, it ceases? Yes I plan to pop the hood after work today before I start it and video/take a look. It may be so loud though at first that I may have trouble finding where it is coming from.

__________________
'87 300TD Estate (Panzer Wagon, Sold)
'95 E320 Estate (Sabertooth, Sold)
'94 E500 (Stark 1, For Sale)
'04 VW GTI (Rhino, Sold)
'12 VW GTI Autobahn (Shadow)

Check the power steering pump, and the fluid level while you are in there.

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2012 Mercedes ML350 Bluetec 102K (hers)
2005 Corvette 55K (fun car)
2002 VW Jetta TDI 238K (mine)
1998 Volvo S70 T5 Turbo 211K (kids)
1994 Ford F150 4WD 246K (firewood hauler)
1983 Mercedes 300D 384K (diesel commuter)

@psaboic - I will, no whinning when I am turning though (referencing the old Ford power steering whine lol) and the power steering is smooth and the wheel is easy to turn.

Does the 87 have a serpentine belt ? If so my wife's 4 runner does the same thing in the mornings . If it is a serpentine and you have a pulley or component bad one failure usually takes out the belt leaving you stranded.

This is where the V belts are nice. if the A/C locks you can still get home. A pain to install though.

The wax on the belt is a good idea cscmc1 . I never heard that one before but I can see where it would help for trouble shooting.

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Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes

Yes it is a serp. belt to the bet of my knowledge. =)

Prior to this issue I remember hearing a squeak in the belt area that I thought was a pulley, even more so based off a Coda exercise, maybe this is phase two of that pulley on it's way out.