I have a 1997 S320. In cool / cold weather, the engine rattles or chatters when idling. My mechanic speculated that the timing chain needs adjustment.

Has anyone else experienced a similar problem?

I think I'd get a better diagnosis of what's making the noise. If its a timing chain--it may fail at any moment.

How many miles?

Could be a failed chain tensioner, esp. if you have < 150k miles on it.

As above, don't wait -- have it attended to ASAP before a very expensive and preventable problem happens!

__________________
Steve
'93 400E

To: Kebowers / 400E

Thanks for the insight. My mechanic speculated the timing tensioner may be the culprit. Yes...I'm headed for the shop shortly.

Have a nice holiday season!

PH1958