Question about 1990 Cadillac Deville

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The fuel gauge is not working on my 1990 cadillac devill

The fuel mileage is not working on my 1990 cadillac deville

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  • 253 Answers

I believe you have a bad sending unit in the tank.

Posted on Feb 17, 2013

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Posted on Jan 02, 2017

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SOURCE: 97 cadillac deville fuel gauge.

Not a current owner, but knowing Cadillac, that may be the way they meant for you to think of the fuel. How many miles till refill. Maybe that made it easier to swallow the high priced, too frequent fill-ups! I'll ask my friend, he's got a '99.

Posted on Jan 28, 2009

SUPERMAN_B_1
  • 294 Answers

SOURCE: fuel filter replacement 1993 Cadillac Deville

hello. it should be located under your car on a line that's coming off your fuel tank and yes you can do this your self very easy to do ,you'll need a few box/open ended wrenches that's it you'll need to check the fitting or the nut on each side of the filter to see what the sizes are,befor removing the filter you'll want to take off your gas cap and remove your neg battery cable ,not when you find the filter it'll have nut on each side all you have to do it loosen them but make sure that you don't break the fuel line or kink it and after you have both sides loose then just finish turning them off and there you go the filter is off, nope no removing the gas tank some newer models you do and the filter is attached to your fuel pump and don't need replaced but for your car and year you wont need to remove the tank. good luck

Posted on Mar 25, 2009

co7196
  • 3433 Answers

SOURCE: 97 cadillac devile the starter wont turn over

tYou have a bad battery terminal connection. chk gtound conecction on battery good luck.

Posted on Jun 14, 2009

  • 12 Answers

SOURCE: digital heater countrol and fuel gauge not working

i had the same problem in my 91 deville but the fuel gauge was intermittent at first, working most of the time then eventually it quit working all together, i also replaced my ignition switch thinking that was the issue but what actually happened is the fuel gauge shorted out the 16 volt supply from the bcm (body control module) which also feeds the ac and in my case the digital speedometer. your speedo probably isnt digital, but if you unplug the fuel gauge from the harness your ac gauge should come back on or vise versus unplug your ac and the fuel gauge should come back on right now im trying to locate fuel gauge. i hope this info is helpful to you, all you need to remove the gauge is 1/4 inch drive rachet and 7mm socket and a phillips screwdriver (#1) for the trim

Posted on Aug 04, 2009

Kravcar
  • 192 Answers

SOURCE: replacement sequence for serpentine belt for a 96 cadillac devill

Assuming you have the Northstar engine

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Posted on Apr 28, 2010

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1 Answer

1990 Cadillac Deville will start then shut off empty . I have changed the fuel filter. Plugs, plug wires, cap EGR valve, PCV valve and air filter. And still have the problem.


If the fuel pump is original to the car & I would
doubt it,then that is the problem

Does the fuel pressure drop before it shuts off

I like to road test with the gauge taped to windshield
or tied to a wiper arm

You have to determine what your losing at the time it shuts off

I think you should have 55 to 60 # pressure

You could put that question into google for the answer

Sep 14, 2012 | 1990 Cadillac Deville

1 Answer

I have an e20 error code on my 1990 cadillac sedan deville. What does that mean?


E20 means open fuel pump circuit could be failed fuel pump relay

Aug 18, 2010 | 1990 Cadillac Deville

1 Answer

My 1993 cadi deville keeps flooding. gas fills-up in carbator when I turn key on. What's this?


first, the 1993 cadillac deville should have a throttle body not a carburetor. And, I think it has ported fuel injection to each cylinder with a fuel injector for each cylinder if it's like my 1990 Cadillac Deville.

Jun 20, 2010 | 1993 Cadillac DeVille

1 Answer

1990 cadillac deville 4.5l runs rough and missfires. Checked fuel pressure and for vac. leaks, both ok. have replaced plugs, wires, cap, rotor, performed injection service. no results. Hooked to scope and...


Had a computer on my 1990 Cadillac Deville bad, after changing plugs, wires, cap, fuel injectors, egr valve, etc.

The computer was not firing an injector and i had a miss and rough running mostly at 35 mph on the roads. It bucked like a bull.in a rodeo.

Aug 02, 2009 | 1990 Cadillac Deville

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1990 Cadillac won't crank


Has the motor siezed from lack of oil or water

May 09, 2009 | 1990 Cadillac Deville

1 Answer

Fuel gage computer problems


fuel gauge is controlled by a sending unit in the gas tank.

Nov 14, 2008 | 1990 Cadillac SeVille

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