hi guys . gt a few question. maybe tech can help me . i have 2001 volvo s40 1.9t just at 60 k almost so i was wondering wat needs to be done...

timing belt at what miage?( keep seeing ppl type 60k n some as far as105k or so..) please help me understand.
spark plugs?
ect...
couple months ago celcame on for o2sensor . erased it to see if it will come bak on but nothing yet. but car hessitates upon strong acceleration then goes, could it b time for new spark plugs?

please let me know. thanks allot

 

Spark plugs due around 60K and being that the car is a 2001 they are probably due. If there was an actual miss it should set a code. Timing belt is due at 70,000, but due to it's age, do it now.

 

In the Manual it states the Belt is good till 105k ... but I see the same thing, people do it a lot earlier.