Hello I have the following problem, My car is a Fiat Punto built in 2002. I have been driving from time to time, which is not continuous, but already some times I have been strangled at the traffic lights in the last 2 months! So when I speed up full on the gas there is no problem at all only if I drive at 60 in the 4th gear at a certain gas level, it jerks down a little I think I’m going to think I’m going to have a problem with the error messages that came with me in the last 4 weeks! It was replaced about 3 months ago spark plugs, spark cable, air filter, oil filter. Does anyone have an idea what I can look at everything without buying everything new now is an older car where I don’t want to spend a lot of money. Thank you