Question about 1994 Cadillac DeVille

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94 Calillac DeVille

I am purchasing a 94 DeVille. It has the 4.9ltr engine. Does it have to run on premieum gas or can it be run on regular gas?

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Min. of 91 octane, or valves will ping badly

Posted on Aug 01, 2008

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Just bought used 1998 Cadillac Deville. Salesman filled car with regular unleaded and now 'Service Engine Light' is on? Can the car burn regular unleaded?


yes it can and when it gets low enough you can put high test gas in it.don`t understand ' did you get fingers tied up typing,or do mean code 39.either way it will run on regular unleaded gas.

Apr 14, 2011 | Cadillac DeVille Cars & Trucks

3 Answers

I have just purchased a 2001 Cadillac Deville. The owners manual says to use reg. fuel and yet I see recommendations on the internet to use only premium. Who is right? Thanks


I would go with what factory recommends and IF it starts to "ping" (rattle sound when accelerating) then step up a grade. Alot of what you hear/read on internet is in direct relationship to fuel available in different areas. Best of both worlds - use the middle grade (it also has extra cleaners in it)

Mar 03, 2011 | 2001 Cadillac DeVille

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Flush radiator and cooling system on 1997 Calillac DeVille Concou


your radiator has a pecock on the bottom of it screw it out then you can run water through a hose behind it once it stops draining to get any residue out as far as the engine youll never truly get all of the old coolant out without tearing it down and putting it back together so flushing the radiator is just fine.

Jun 18, 2010 | 1997 Cadillac DeVille

1 Answer

Parts parts parts 94 deville 2 door.


yes another gas guzzling CO2 producing monster bites the dust ,wonderful ,hope you are replacing it with a low emission peugeot or a citreon ,better still an electric vehicle

May 02, 2010 | 1994 Cadillac DeVille

1 Answer

Engine/Chassis Specs '94 DeVille


but what's the VIN "B" ?

VIN B refers to the engine identification , the eighth digit in the VIN Code , if the eighth digit in the vin is B it identifies the engine as being a 4.9 liter V8 port fuel injected engine .

Jan 07, 2009 | 1994 Cadillac DeVille

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94 4.6 deville coolant hot,eng hot ,limp mode


pull codes from on board diagnostics turn key on not running press and hold hot button on temp and off at same time till dash lights up write down codes respond with all computer codes i will help you determine prodlem and try to fix

Aug 21, 2008 | 1995 Cadillac DeVille

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94 sedan deville


have the converter checked out,,,if its clogged it wont allow the car to run right and youll have no power

Aug 13, 2008 | 1994 Cadillac DeVille

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