Hello all, I have searched and search but have not been able to figure this one out. I have an 86 Volvo 240 wagon that only spudders when taking off from a stop or when floored at speed. It drives flawless when the engine is cold however once it's up to oppressing temp it starts the sputtering aruff which is quite annoying since the whole wagon will jerk until it's up to speed. Something you can feather the throttle to help tone the sputtering down but almost every time from a stop it does it. I've recently replace the in tank pump and sending unit along with a new cap/rotor, spark plugs and wires and also fuel pump relay. Any ideas?