Question about 1991 Cadillac DeVille

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1991 cadillac deville stalls when you accellerate

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Rodney Swinson

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Is it caborated of fuel injected, engine size?

Posted on Jun 16, 2011

  • blaze042078 Nov 21, 2011

    Mine is doing same and its a 4.9 and i beleive it has fuel injectors but also has what looks to be a carb have replaced spark plugs wires dist cap and roto button along with modulator valve and still runs ruff im begining to lose faith in repair cause i cant find solution love the car have three kids and its a comfy ride please help

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SOURCE: 1991 DeVille: 1991 cadillac deville skipping what is causing it...

bad plug or wire, dist cap, rotor button,vacumn leak or rocker arm off

Posted on Jun 20, 2010

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Skiping when i accellerate


Has the engine been tuned up recently? If not, have a thorough tuneup performed. If it has, try purchasing a can of Seafoam fuel additive and pour the can into a full tank of gas. You may see some smokoe from the exhaust as you drive, but that's just the Seafoam doing its job - correcting the adverse effects of ethanol in the gasoline we're forced to buy these days.

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are the teeth worn on the gear in the gearbox ,sounds like it to me ,pull them out and have a good look

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1991 cadillac sedan deville has excess pressure in gas tank and stalls making right hand turns as soon as fuel gauge shows 9 gals.


SOUND LIKE FUEL PUMP GOING BAD.BUT CHECK THE EVAP CHARCOAL CANISTER FILTER IF GAS SOAKED REPLACE IT REPLACE GAS CAP MAKE SURE GAS CAP IS THE PRESSURE VACUUM TYPE.ALSO CHECK VACUUM PURGE VALVE VACUUM HOSE TO CARBURETOR AND CHECK VACUUM HOSE TO CHARCOAL CANISTER FOR BLOCKAGE RESTRICTION OR BROKEN AND MISSING.

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1991 DeVille: 1991 cadillac deville skipping what is causing it...


bad plug or wire, dist cap, rotor button,vacumn leak or rocker arm off

May 17, 2010 | 1991 Cadillac DeVille

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My friend has a 1991 Cadillac Deville and the digital dash went out. are there any cures for this problem.


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Poor performance under accelleration


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Astro HESITATES upon initial accellerating.


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dee if the linkage is binding first, clean the throttle body and lubricate all moving parts if this doesn't solve it an accellerator cable may need replacing

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Is the converter stopped up? Check fuel pup pressure?

Mar 16, 2009 | 1991 Cadillac DeVille

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