daz2617

i have an over revving on every start up , around 1200rpm , had it scanned and the water temp , air temp , fuel temp sensors are showing around -20/-35 degrees c . had them cleared and they return again . the garage said it shouldnt be a wiring fault as they can be cleared then re appear ., had the air temp and water temp replaced but cannot find the fuel temp sensor , presume its inside the injector pump . could this cause all the 3 problems ?
also when driving in any gear it will only accelerate up to 2500rpm then feels like the turbo cuts off . have replace the vacuum pipes , cleaned the turbo vanes and intake manifold but no better
any ideas on this one ???
thanks
darren