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Volvo: 85 Volvo 240 Secondary Fuel Pump, shade tree mechanic, fuel pump relay


Question
HI!  I just bought my first Volvo this weekend and have already run into a problem.  It seems that the secondary fuel pump is draining my battery somehow.  I'm not mechanically inclined, but I have a shade-tree mechanic available to help me out.  Since it's a secondary pump, is it necessary?  Can we disconnect it?  If so, how?  If not, what should we check/replace first?

Thanks!
Melissa

Answer
Melissa,
Secondary or pre-pump is an important part of the system so do not disable it. See that indeed there is power going to the pump with the key off and then see if you can unlug the fuel pump relay to see if it that will stop the pump. If it does you may have a bad relay or short somewhere that will need to be found. Try to get a book and look at the wiring section to see where the system wires and components are located and start the testing and tracing process. This is a bit tough so you may want to have someone with Volvo training take a look at it.