My Mazda 2002, 626 started hesitating about 3-4 days age when I got inbetween 40-50 miles per hr. Above and below that speed there was no problem. Today my engine light came on and there feels like there is a hesitating/bumpiness to the ride at any speed - even though I can still excelerate upt to highway speed. Any ideas?

 

have you had a tune up lately