Thanks @abscate! We were about to try this suggestion but worse things happened :roll: I took it down the road to see how it sounded today and it had a very rumbly hard start. When I started driving, hardly any acceleration. My generic code reader gave me P2111 - throttle actuator stuck open. I did ...

Additional info: The only thing we have done recently is replace the fuel filter as it was leaking. Today I also replaced the air filter thinking it might be an air intake problem, but after driving, no change. Our working (uneducated) theory is bearings in one of the gears on the serpentine belt is...

Hello all, I am having an issue with my 2004 XC70 w/230+ mi. I am hearing a very audible whirling (not quite whining?) that started very suddenly the other day. It only seems to be happening when I am NOT accelerating, with the exception of going up an incline, then I can hear it faintly. I can inst...