i own a 2003 terios sl which has previously never had any problems.
over the last month i have noticed an intermittent lag between pressing the accelerator and the increase of power output (sometimes there is a slight lurch)and a loss of power on hills.
it starts perfectly every time
i have checked for loose connections, sprayed the electrics with wd40(in case of damp)checked and changed the plugs for bosch super 4's, added injector cleaner to the fuel tank but so far there is not any improvement.
Any suggestions, (i used to be able to fix own my cars but with all these sensors and computer controls i don't have a clue and am just throwing money at it) (my local mechanic is too busy to fit me in for 2 weeks)
i have toyed with the idea of buying a cheap fault code reader but don't know if i would be wasting more money