Question about 1993 Cadillac DeVille

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1993 cadillac deville sputter whjen excelarate adn also when idleing then cut off new plugl aND CAP AND WIRES INSTALLED ALREADY THE PROBLEM IS STILL THERE

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Run a compression test or take it to a shop and have it put on a scope, you need to make sure you have the basics of a good engine first, while misfires can and usually are electrically related they can be from mechanical problems as well. With a scope you can isolate the cylinders that are at fault and also stick a vacuum gauge on the engine to see if it is steady no needle bouncing around, which would indicate valves, cam etc.

Posted on Oct 13, 2010

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Posted on Jan 02, 2017

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I have an 88 Cadillac Deville. 2 months ago I had a new fuel pump put in. It's making a whining noise and the car keeps dying and sputtering. What else could be the problem to make the pump go out?


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Dec 28, 2015 | Cadillac Cars & Trucks

1 Answer

Where is distributor cap located on 1993 Cadillac DeVille 4.9?


Follow one of the sparkplug wires back to it. Usally GM distributors will be at the back center of the motor in front of firewall.

Jan 26, 2012 | 1993 Cadillac DeVille

2 Answers

It cut off a and will not start. I changed the coil,dist. cap, rotor. It is getting fuel


Just on a hunch, it might be the anti theft system. Check out this link and read up on these systems. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Apr 27, 2011 | 1993 Cadillac DeVille

1 Answer

My 1995 Deville has a idling issue, replaced new water pump, map sensor and idle control valve...still not fixed. .any sugestions??


Many times this issue can be caused by a dirty air filter, I would start there if you already
haven't done so.

Also, if you haven't recently changed your spark plugs and wires you may consider pulling
out atleast one spark plug to look at its condition.

Jan 22, 2011 | 1995 Cadillac DeVille

2 Answers

Car has new plugs, wires, dist. cap and rotor, also water pump. Sputters badly when you take off, continues to sputter until higher speed is reached. Also surges occassionally when idling. Fuel pressure...


to me it sounds like your just about to put water down your exhaust mate or your rings are binding up. I recon dump your oil and run diesel oil from now on and reset your timing belt before those new spark plugs end up in your lap.

Mar 27, 2010 | 1992 Cadillac Eldorado

3 Answers

My 91 cadillac runs rough just on idle


If by rough you mean it sputters like it's idling too slow, it's most likely the TPS (throttle positioning switch) which controls both the cold and warm idle.
Could also be a MAP sensor. Run the diagnostics test on the car and retrieve the error codes to point you in the right direction. Go to the link below for information on retrieving the self diagnostics on your Caddy. Best of luck.
Greg
http://www.troublecodes.net/cadillac/cadbrom.shtml

Jun 28, 2009 | 1992 Cadillac DeVille

1 Answer

I recently installed a fuel pump on a 1993 cadillac deville. i also changed the filter,emission control,plugs and wires. it fired up and ran for about 14 minutes. it ran very sluggishly then quit. i have...


was it the correct fuel pump with the propper psi?
have you checked you wires to make sure none got crossed. are the spark plugs propperly gapped?

Mar 07, 2009 | 1993 Cadillac DeVille

1 Answer

Distributor cap


IF THE DISTRIBUTOR IS INSTALLED CORRECTLY IE; THE STICKOUT (WHERE THE WIRES FOR POWER/GROUND CONNECT ON THE BOTTOM SIDE) #1WIRE GOES ON THE SIDE TOWARDS THE BACK(WINDSHIELD) THEN IN A COUNTERCLOCKWISE DIRECTION ITS 8-4-3-6-5-7-2

Jul 09, 2008 | 1988 Cadillac Sedan DeVille

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