my 1.6 vectra runs fine untill it hit 90 in temp then it loses power in the throttle and the gears . ive tryed cleaning the throttle body and the erg valve and replaced the plugs but still no joy . what new part do i need
it comes and goes really . no i havent put it on a code reader.if i did would the engine light need to come on to give me a proper reading or would it still tell me when the car is running fine