I have a weird problem my car sputters and almost dies. Sometimes when I give it gas it will almost die but if I pump the gas pedel lightly it will come out of it..My problem dissapears when it is warmed up but if I am at a stop light for a minute or more it will start to die out again. I have replaced all my fuel injectors and fuel filter, I have also replaced the controll pressure regulator. My problem improved a bit when I had discovered I had no ground wire for the Frequency valve I replaced it but she still has the same problems just not as bad...What could it be??? P.S my vacume line are routed correctally and I have replaced all relays and circut breakers and a RPM relay...I am confused.....HELP!!!!