Dear eventoday
Hope you're well and stay so. I've never owned/driven/repaired a V90 or any other Volvo with a six-cylinder engine. Having read many posts by those who have, I suggest you should st once get changed the timing belt AND tensioner.

The B6304 engines are of an interference design, unlike the B230 engines used in most four-cylinder Volvos. So, a broken timing belt or seized tensioner means valves strike pistons. If the engine is not ruined, the repair will be very costly.

Unless you have iron-clad proof - dated work receipts with part numbers included - get this work done as soon as possible. Avoid driving the car until it has a new timing belt AND tensioner.

Prof. Google informs that there's a Volvo dealer at 208 Hunter Airport Dr, Fletcher, NC 28732.

This dealer may - or may not - have a mechanic familiar with rear-wheel-drive Volvos, last produced in 1998. If so, I'd ask that the old timing belt and tensioner be returned to you. That will tend to confirm the work has actually been done.

Do NOT accept assurances that the timing belt "looks OK". Rubber items - belts, hoses, tires, etc. - deteriorate with time and exposure to air. So 10-year-old tires - with just 50 miles of use - are truly junk. Whatever the cost of getting a new timing belt AND tensioner, it is nothing compared to the cost of finding a replacement engine or having the head rebuilt.

If this dealer has no one qualified, they may refer you to an independent garage, that has someone familiar with "vintage" Volvos.

Best of luck!!!!

Hope this helps.

Yours faithfully,

Spook