Question about 1995 Cadillac DeVille

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Fuel pump replacement

Fuel pump is out...i listened by the tank no humm...is there anyway to get to the full pump without dropping the tank? and how? was suggested maybe through the trunk...is that an option?

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Unfortunately you do have to remove the fuel tank to change the fuel pump on your deville.Good Luck!!!

Posted on Aug 04, 2008

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Need to see a video on installing in tank fuel pump


Youtube must have thousands of them, well hundreds anyway. Well, a whole lot anyway. One probably like or similar to your '89 model.

Pretty sure you have to drop the tank to replace pump. In later years, makers began putting access panels under the rear seat or trunk area to access the fuel pump assembly, without removing the gas tank.

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the fuel pump is only designed to run until it reaches a preset pressure. once it reaches that pressure it turns off. One way I know to check it without dropping the tank is to remove the fuel filter. Put the fuel line in a gas can so you don't get gas all over. turn the key on if the pump keeps pumping fuel then it's not the problem. at that point I would buy a new fuel filter because it may be clogged and the reason no fuel is getting to the engine and they are inexpensive and a good idea to keep changed anyway.

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Sounds like you need a fuel pump. Please be advised there is a filter/regulator sitting next to the tank which you should replace also. I think the filter/regulator can be changed without dropping the tank so you may want to try that first.

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Do you have to drop the gas tank in order to change the fuel pump?


The fuel pump is actually inside the gas tank. So unless u want a big hole in your floor board i would disconnect fuel lines and wires to the fuel tank. Remove screws, and ground strap from the filler area. My luck I always have a full tank of gas when the fuel pump decides to go out.. Full tank of gas over your head is not much fun. anyway try to avoid dripping gas, and your ears.... Trust me i know hurts like no other....

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Need to listen for fuel pump humm for proper operation. Shoud humm for about 3 seconds with key turned in the on position. Humm will sound from gas tank where the pump is located. If it does not humm. possible Faulty Fuel pump relay or pump. It will need ferther diagnosis.

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