Alright guys I'm new to Volkswagen. Having issues on a fleet touareg 2007 v6 3.6 at my work. Has codes p310b and p0087. Already followed tsb for p310b code and replaced pressure sensor but codes still return. Here's a list of everything replaced so far: Fuel pump, suction pump, flange with fuel filter, flange with pressure relief valve, fuel pump control module, HPFP and cam follower and high thrust fuel rail sensor. Vehicle drives normal but will randomly start to sputter then die when slowing to a stop. I've also noticed the fuel gauge acts funny upon start up at times. Any suggestions I'm tired of working on this thing.