"groan" when cold on a 996TT

[roshambo]

All

Just noticed last couple of mornings that on start-up I hear a kind of groaning from the engine bay of the car. Lasts about 10 secs then never heard again.

I appreciate that "groan" sounds a little vague but its the only work I can use to describe it !

Its an 02 996TT with 23k miles on it.

Any ideas?

Ro.

[MOD500]

Some pump building up pressure on start up maybe?

[roshambo]

Possibly, but its only started doing it last week.
Guess I will have to leave it with a specialist or OPC overnight as it only does it from cold in the morning or when the car has been left several hours.

Ro.

[DanH]

Have you checked all the fluid levels?

[leosayer]

Probably the alternator trying to keep a charge on a flattish battery just after starting.

[roshambo]

Brand new battery a few months ago.
All fluid levels fine.

Car was serviced last month (big 48k service)

Could it be the polyrib belt needing tightening, or any other belt?

Ro.

[turboguru]

mine has done it since I have had it, it only does it in the morning. I noticed my clutch is tight until the noise stops then it drives fine. It only lasts a couple of seconds and then goes away. I just put it down to system start up and 5 secs for everything to come online.