i cannot understand your post. you mean you thought there was some snow on the road and the rpm is jump up to 500 to 800 (if it jump 5k to 8k, you are in seious trouble with your car).
there are many possible reasons, i would suggest you go try to tune up first. tune up as change spark plug, engine oil, oil iflter, air filter...etc. but i think it might be your MAF sensor is having trouble.
there are many possible reasons, i would suggest you go try to tune up first. tune up as change spark plug, engine oil, oil iflter, air filter...etc. but i think it might be your MAF sensor is having trouble.