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Help Please 1990 780 will not start 700 1990

posted by  Josh Bolivar on  Sat Dec 6 08:39 CST 2008
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last visit: Tue Jul 26 17:19 CST 2011
[RELATED]

I bought a 90 780. The car has not started in two years. I determined I am not getting fuel.
I replaced the radio suppression relay and the fuel relay.
I next replaced the coolant temperature sensor, and the rpm sensor.
Still would not start.
I then wired the fuel pump directly to the battery, after first disconnecting the pos and ground wires.

Car started right up.

What is keeping the fuel pump from getting the 12 volts or the ground?

What do I check or replace?

Any suggestions will be appreciated.

Thanks, Josh






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