PNigel

My ABC Malfunction Light came on and I noticed the engine was making a roaring sound after a few minutes of driving. I had the ABC Malfunction repaired but the roaring sound is still there. It starts after a few minutes of driving. All the gauges are in the normal range. When I shut the engine off for a little while the sound is not there once I start the engine again. After a few minutes the sound returns. I do not hear the sound when idling. Any ideas?

Pete_84

Hello PNigel,

first of all, what exactly was malfunctioning on your ABC system?
Regarding your description I'm 95% sure that the pulsation damper / shock absorber (black bulgy thing, sitting on your ABC hydraulic pump) needs to be replaced.

It's this thing right here:
http://www.bk-fahrzeugteile.de/shop/...0004660010.gif

hope this helps.

Regards