There should be a fuse (probably a 15 amp (blue) fuse, or maybe a 10 amp red fuse) under the hood in the fuse block. Find the fuse and check it. That fuse sends power to the fuel pump relay (also under the hood), so when relay is activated by the engine computer, the power is sent on to the fuel pump in the gas tank.
Find and check the fuse, then see if the relay has power to it -use a voltmeter or test light. If power is there at the relay, hold your finger on the relay while someone turns key to on, not start. You should feel the relay click, meaning the engine computer has activated the relay which should send power to the gas tank.
This is how you test for power to the pump when it won't do anything.
SOURCE: 1996 CADILLAC DEVILLE, NO POWER TO FUEL PUMP
Check for a burned fusible link under the hood. If you have power at the fuel pump relay, you could have a bad ignition switch or bad oil pressure switch...accordianman
SOURCE: trying to locate water pump on my 2000 caddy deville
Its on the same side of the engine as the transmission, driven by the belt up top. It requires a special socket to remove the pump from the housing.(also, the pump turns clockwise to remove!)
SOURCE: Is there a fuse for
there is a fuse in the engine compartment and a relay located on the drivers side behind the air filter housing, there should be a black box type cover with an access for fuses with a diagram check the fuse then pull the cover and check the relay,it also could have a bad fuel pump, or plugged fuel filter
SOURCE: Firing diagram for 1990 caddy sedan deville front wheel 4.5?
To avoid confusion, remove and tag the spark plug wires one at a time, for replacement.
If a distributor is not keyed for installation with only
one orientation, it could have been removed previously and rewired. The
resultant wiring would hold the correct firing order, but could change
the relative placement of the plug towers in relation to the engine.
For this reason it is imperative that you label all wires before
disconnecting any of them. Also, before removal, compare the current
wiring with the accompanying illustrations. If the current wiring does
not match, make notes in your book to reflect how your engine is wired.
4.5L and 4.9L EnginesEngine Firing Order: 1-8-4-3-6-5-7-2 Distributor Rotation: Counterclockwise
Hope helped with this (remember rated this help) Good luck.
SOURCE: no heat on my 98 caddy deville delegance?
The heater core may be clogged up. Or the blend door isn't functioning correctly.
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