[warninglight]

Hard to know really!

My S70 was like that when bought, and was no different 8 months and 18,000 miles later.

My C70 was making similar noises when I bought it, and the pump packed in the following day, but it had been out of use for a year or so.

The pump isn't a particularly difficult job to do, the time consuming bit is making up a little 'key' to slacken off the alternator belt tensioner. I got a pump for good money from Ripsta33, and there are plenty of breaker 850/x70s on here too...

The S70 which soldiered on felt like it had 'tight' spots in the steering, whereas the C70 was more a vibration through the wheel when steering at parking speeds, not sure if that's significant or not!