Question about 1994 Cadillac DeVille

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94 cadillac deville 4.9L turns over strong but will not start. The car started and ran fine yesterday. Has fuel at the fuel rail and fuel pump pressurizes line when key is turned on. Only quirks lately has been an irregular idle, slow then fast, and the car has started hesitating and has backfired once or twice under heavier acceleration(uphill grade).

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Hello, Check the distributor, remove cap and see what the rotor looks like, it may have worn through,into the distributor cap from the inside. It could also be the module and or the coil. Wish I could give you a better way to go but its where I would start first.

Posted on Sep 30, 2010

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98 Deville had a dead batt. Replaced, turns over but wont start


Sounds like fuel issue, remove the black plastic cadillac cover on the top of the engine, then find the fuel rail on top, and remove the black tire cap looking thing on the end of the fuel rail. Now you will have to get a fuel pressure guage ($45), and screw it on right there. Or you can also just poke that little valve with a ink pen to see if any fuel squirts out, it should come out with alot of force, it is like a valve on a bicycle, it only lets fuel out when you push on the valve ***. As for the battery being dead perhaps you left your parking lights on? My 97 deville, had a cold start problem, that it took 5 minutes of cranking off and on, to get it cold started, but after it was running it would start throughout the day just fine. I ended up replacing the fuel pump in the tank, and the fuel filter on the rail.

Nov 19, 2011 | 1998 Cadillac DeVille

1 Answer

My 89 sedan deville starts and then cuts off like its not getting any fuel is the fuel pump bad plus i ran out of gas about six times before that happen


You could get a buddy to turn the key to the on and off position a few times while you hold the valve stem on the fuel rail on top of the motor to get the air out of the lines. It probably has a air lock int lines

Feb 04, 2011 | 1989 Cadillac Sedan DeVille

3 Answers

My car ran out of gas I put gas in it and now it qont start


we just had to replace the fuel pump in our 96 deville, The mechanic said that running the car with a low level of fuel can cause strain that would cause it to break,

Nov 28, 2010 | 1996 Cadillac DeVille

1 Answer

Hi there, i have a 1994 cadillac deville that will not start


Well because you killed battery down you need to recharge battery with a good charger for an hour or two. You need enough amps to turn over starter & energize fuelpump. Just because starter turns over doesn't mean you have enough to power fuelpump. Before you connect battery charger disconnect battery cable while charging. This will clear stored codes. After charging, hook up battery see if codes return.

Jun 14, 2010 | 1995 Cadillac DeVille

1 Answer

Hi i just bought a 94 cadillac deville and put it the road yesterday i drove it last night it seemed to fine this morning it would not start i took thew starter out and bench tested it that was fine all...


had it been sitting for a while before you got it? could be bad gas, could be moisture on the plugs, could be a fuel pump. turn it over a bit then check a plug and see if there is gas to it if there is then check to see if there is a spark. If no spark check coil.

Apr 18, 2010 | 1994 Cadillac DeVille

1 Answer

93 deville wont start.....has spark...tries to start when gas is poured into TB...also...pwr windows, locks, and trunk wont work...batt is fine....cranks fine, but wont start??


you need to check fuel pressure on fuel rail,you need at least 55psi of fuel pressure to fire up.check fuel pump fuse and relay or any anti theft problems

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1 Answer

My 94 jeep cherokee started ran for a minute or 2 and stopped


i would suggest checking to see if you are getting fuel by disconnecting the fuel line at the fuel rail and turn key if no fuel then its either fuel pump or fuel filter. if you get fuel then it would be the spark

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