Mechanics

NO POWER TO FUEL PUMP RELAY

1998 Cadillac Deville

Electrical problem
1998 Cadillac Deville V8 Two Wheel Drive Automatic

power works for a e few seconds on one side but other side has no power.
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Davelawrenz
October 1, 2009.



The few seconds is normal as the ECM controls the relay to build rail pressure in anticipation of cranking. Check the fuel pump fuse in the underhood fuse center. If it is blown, you could have a short, but it is more probable that the fuel pump has high resistance and is drawing too many amps and opened the fuse.

Factoryjack
Oct 6, 2009.