Question about 1991 Cadillac DeVille

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Where is the fuel pump locate on 1991

Where is the fuel pump locate on 1991 cadillic deville 4.9l

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The fuel pump on that vehicle is located inside of the fuel tank.

Posted on Jul 31, 2010

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Location of fuel pump relay on cadillac seville 1991


The fuel pump relay on your 1991 DeVille is in the relay center underneath the passenger side of the dash, to access, take down the sound barrier under the right side of the dash panel (7mm). The third one from the bottom right relay position is for the fuel pump (be sure to count any vacant positions, you may not have all the accessories).However, if you just want to check if it is good, you can run a fused jumper from the positive battery post to the prime connector. The prime connector is green with a red wire (not connected to anything else), It's located underneath a cover on the firewall a few inches inboard of the right hood hinge.


Read more: http://wiki.answers.com/Q/Where_is_fuel_relay_located_for_a_1991_cadillac_deville#ixzz25XlLBWBk

Sep 03, 2012 | 1991 Cadillac DeVille

1 Answer

I need a fuse diagram for 1991 cadillic deville


autozone.com. register for free and you'll be able to find any diagram u need. i just looked it up its there.

Oct 20, 2011 | 1991 Cadillac DeVille

1 Answer

I just replaced the pulley on my 1997 cadilic deville and now my car is overheating and i have no heat/


Sounds very much like like a water pump or pump belt problem. If there is no coolant circulating (indicated by the overheating), you will have none passing through the heater core of the car.

Dec 12, 2009 | 1997 Cadillac DeVille

2 Answers

1991 cadillac deville fuel problem


fuel pump relay is in engine compartment on drivers side under the flap the two relays that are together ,it is the bottom relay,,u cant by pass.if relay is good ,if it clicks when turning over and key on and off (it should click and go off if key is turned on) then use a test light and ground it find wires going to top of tank and probe wire have some one turn key on ,it should light up test light and go off ,if this happens ,replace fuel pump

Jul 03, 2009 | 1990 Cadillac Deville

2 Answers

1990 deville, replaced ecm, fuel pump, filters,


wow...BIG problem...I'd say you have a bad ECM - maybe you hooked it up "hot"? otherwise, check all grounds for secure connections.
Good Luck

Jun 14, 2009 | 1991 Cadillac DeVille

1 Answer

1997 cadillic deville no fuel is getting into injection pump 50lbs pressure.SHNS


hi, the most common issue here will be a dirty or clogged fuel pump and filter as well. I recommend changing the filter and fuel pump. when replacing these vital devices, make sure the wires are connected tightly and the voltage level at the pump is sufficient.

May 15, 2009 | 1997 Cadillac DeVille

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