[W126 Coupe] "Whirring" noise in the engine

[Jonathan Hodgman]

if it's from the trans only thing that would whir would be the front 
pump....NG :(


On 2/1/2011 4:47 PM, Michael Ramay wrote:

> I did the long screwdriver to the ear trick and it, unfortunately, 

> ain't the pump. Darn. Good idea though.

>

> What about something in the front of the tranny??

>

> On Tue, Feb 1, 2011 at 1:46 PM, Jonathan Hodgman <jhodgman at gmail.com 

> <mailto:jhodgman at gmail.com>> wrote:

>

>     they don't have to leak to make noise;-)

>

>     On jack's SEC his pump made noise when it was cold.

>

>

>

>     On 2/1/2011 4:35 PM, Michael Ramay wrote:

>>     Thought about that too and took mine apart (it was fine), then

>>     put in a new set of viton o-rings. It "should" be good for ten

>>     more years.

>>

>>     Good ideas, but not the problem one yet!!

>>     Mike

>>

>>     On Tue, Feb 1, 2011 at 9:13 AM, Jonathan Hodgman

>>     <jhodgman at gmail.com <mailto:jhodgman at gmail.com>> wrote:

>>

>>         I've seen the SLS pumps make a noise that's hard to locate..

>>

>>

>>

>>         On 2/1/2011 9:22 AM, Michael Ramay wrote:

>>>         It's not turning and it's unplugged.

>>>

>>>         On Tue, Feb 1, 2011 at 6:15 AM, Markus Meyer

>>>         <markusfmeyer at gmail.com <mailto:markusfmeyer at gmail.com>> wrote:

>>>

>>>             Is your air  pump unplugged?  That's what mine sounded

>>>             like till I unplugged it.

>>>             Markus

>>>

>>>             On Tue, Feb 1, 2011 at 9:00 AM, Michael Ramay

>>>             <mike.ramay at gmail.com <mailto:mike.ramay at gmail.com>> wrote:

>>>

>>>                 My '87 560SEL makes a "whirring" noise when it's

>>>                 first started. Sounds almost like a bad bearing in

>>>                 the alternator and loud enough that my wife is

>>>                 commenting on it but in a mile or so it goes away.

>>>

>>>                 - I removed all the V-belts on the front of the

>>>                 motor, still have the noise.

>>>                 - Since it sounds like it's coming from the

>>>                 passenger side of the engine up high, I removed that

>>>                 valve cover then ran the engine - it was louder.

>>>                 - Put in a new timing chain and new guides. !@#$%^&*

>>>                 - still have the noise but the car has noticeably

>>>                 more power.

>>>

>>>                 It REALLY needed the guides since one was broken in

>>>                 two and a 3" long piece is missing plus another had

>>>                 the hole for the retention pin wallowed out.  I

>>>                 looked very carefully down the chain pathway during

>>>                 the installations but no sign of the piece.

>>>

>>>                 Will removal of the oil pan allow me to see much of

>>>                 the lower timing chain guide area? If the missing

>>>                 chain guide is jammed in there and rubbing on the

>>>                 rotating bits, why would the noise diminish in a

>>>                 minute or so of operation?

>>>

>>>                 Suggestions??

>>>

>>>                 Thanks,

>>>                 Mike

>>>

>>>

>>>

>>>

>

>

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