iv got the 98 model s10 with the 2.2 5 speed i was goin down the road and all was fine stopped at the redlight hit the gass it took off as normal then just bogged down and started missing and backfireing it still starts fine but after about 6 sec starts missing and when u hit gas it will rev up a sec and then start bogging down and missing it has p0440 twice and po452 in it also thanks for reading