[tweak04]

does the 01 v-6 have a fuel pressure regulator? if so where is it? and if not what is the chrome diaphram looking thing on the fuel line. cant find anything on it and even alldata says it dosent have one. so what is that part? ive been having major hesitation problems and dont know what else to do. ive changed the iac, maf tps, injectors, fuel pump and filter. plugs and wires, egr valve, the sensor that connect to the egr through vaccum lines. oh ya lets not forget the engine. any ideas, thanks

 

[shinerstang]

Are you throwing any codes? What is your fuel rail pressure? I would check that first......