Question about Cadillac DeVille

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Hi i have a 1992 cadillac deville with a 4.9l v8 that is having problems staying running. i dohave a lot of knowledge with cars but this has me stupped. the car seems like it is not getting enough gas but the fuel pressure is 35 at idle and 40 while running. here are a list of things ive done already plugs,wires,cap,router,coil,egr,map sen, fuel filter, injectors, fuel pressure regulator, egr selinoid, tried other pcm but brought back to scrap yard, cam shaft pos sen, trottle positioning sen,

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Clean the throttle body man, its weird but i've fixed a few with the same problems by cleaning the throttle body

Posted on Apr 08, 2011

  • nahte806 Apr 08, 2011

    let me know what u find

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I have 1992 cdilac sedan deville traction contol lite stuck on i have 2nd and 3td gear only so i replace tranny and still avethe same problem


you replaced something that is not connected to the traction control. Run the fault codes and fix the faulty sensor.

Dec 24, 2014 | 1992 Cadillac DeVille

1 Answer

How do i repair a blown head gasket on my 1992 cadillac deville V8 4.9L


The correct way is to remove the head(s) have the head(s) checked for warpage repair as necessary then clean everything good and replace the head gaskets. There are some places that advertise a product that is suppose to seal a head gasket leak but remember if it seals the headgasket leak it may stop up your radiator, also it will just be a temporary repair

Sep 20, 2010 | 1992 Cadillac DeVille

1 Answer

How many and location of O2 sensors for 1992 Cadillac sedan deville V8 4.9L


theres 2 o2 sensors one is midway back down the exhuast and one is up by the exhuast manifold

Sep 14, 2010 | 1992 Cadillac DeVille

1 Answer

1992 cadillac deville looses power over 55 mph.


Have your Cat Converter checked, ASAP.

Apr 25, 2010 | 1992 Cadillac DeVille

2 Answers

I have a 1995 cadillac sedan deville with a 4.9 liter engine. my problem is that the dash goes out and stays out and the heat stays on. i have absolutely no display at all, not even on the radio. PLEASE...


most likely its the computer i have a 1992 caddi an i had the same problem it just stayed on get the computer module replaced and all should be well

Sep 09, 2009 | 1992 Cadillac DeVille

2 Answers

HI. I HAVE A CADILLAC SEVILLE V8 4.9L '93 135000


thermostat, or you have ablockage in the system ,did you burp it?

Sep 02, 2009 | 1992 Cadillac Seville

1 Answer

2003 cadillac deville turns off v8 4.6


Its your crankshaft position sensors.I had the same problem.

Jan 19, 2009 | 2003 Cadillac Deville

1 Answer

1992 Cadillac deville


Hi,before you do anything, have your ignition switch checked by a pro ,this is a comon problem for GM cars,even when if sounds odd , this can save you a lot of money,

Jul 27, 2008 | 1992 Cadillac DeVille

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