FOR THE PAST WEEK THE FIRST START OF THE DAY ...

1998 BMW Z3

Tiny

tedefroberts

December, 23, 2012 AT 3:52 AM

For the past week the first start of the day brings a loud howling noise. The noise ceases after approximately 3 minutes of driving. If I park (to shop etc.) And return within 30 minutes or so, there is no howling on restart. Any ideas? Thanks!

1 Answer

Tiny

ASEMaster6371

December, 23, 2012 AT 4:08 AM

There is an electric air pump that operates when cold. It may be the source of the noise.

Roy

Please login or register to post a reply.

Fuel Pump Pressure Test