Poorly sprinter 310

[sprinternut]

I posted previously about sudden power loss on my 310d and I think I may have cured it.A wire going to the back of the fuel pump had been cut,I assume with the intention of installing some sort of switch,but had been badly rejoined with crimp blade and receptacle which had corroded.I remade the cables by soldering and heat shrink and the problem has not occurred in the last 1000miles,but the throttle response is much less sharp than before the fault (van has been remapped and went like a rocket)It has been on star diagnostic and was not in limp mode,2 faults were shown

1)Fuel stop solenoid
2)Crank sensor

As the solenoid wiring was at fault,that accounts for that problem,but the Merc tech reckons that the crank sensor is ok because the vans starts first time hot or cold.Could the solenoid operating while on the move have damaged the pump somehow?

 

[Dieselman]

No, it's how it stops the engine. It justs stops the flow of fuel to the pump. More intriguing is how it could run at all.