Question about 1994 Cadillac DeVille

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94 deville its 85degrees outside in atlanta and the cars computer irs registering -35 degrees below the engine is getting hot very quickly can any body help and car shifts sluggishly

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TRY CHECKING YOUR PCM CODES BY PRESSING THE (RED) BUTTOM YOU USE TO RAISE YOUR HEAT AND THE OFF BUTTON AT THE SAME TIME YOUR DASH WILL LIGHT UP AND DISPLAY A SERIES OF CODES.............

Posted on Jun 26, 2009

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Posted on Jan 02, 2017

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Im haveing a over heating problem and i got a new water pump and thermost dont know what else to do


Are you just going by your temp gage? Is coolant boiling over? Are you losing coolant? I'd want to know, how hot does the engine gets in degrees F? Does the radiator fan work? Can you see coolant circulation in radiator? If you remove radiator cap, cool engine, then start the engine, does the coolant rise quickly? If it does, I'd look for head gasket issue.
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How should n thermostat work on a colt 2004 tdi


closed at start then close till around 85degrees c and full open around 95 degrees c. It should vary the opening depending on the water temperature lost through the radiator to maintain a constant engine operating temperature of around 88 degrees c.

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How do u disable a 94 cadillac deville anti theft system


U can bypass it (called the VATS system) but not fully disable it, what is done mimics the key code to fool the VATS module into sending a OK to start signal to the fuel injection computer (called the ECM). go to the web link below for instructions on the bypass.

http://vats.likeabigdog.com/

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1 Answer

Where is the temperature gauge hand supposed to


The needle should stay at or just below the 3/4 mark but it may go slightly higher but that would be rare. An example would be driving with the car loaded with 4 people, a/c running on high with outside temperatures of 95 degrees or more.

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The engin running temp is 210 to 233, but the temp outside is a 103 degrees today. Is this a problem.


Most cooling fans come on at about 225 degrees. 233 is a little high, but if it comes down pretty quickly, you should be okay. You might need a coolant flush.

Jun 27, 2009 | 1996 Cadillac DeVille

1 Answer

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sounds like you are having a coil problem

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1 Answer

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1 Answer

Runs rough when below 35 degrees


YOU MAY HAVE AN ENGINE THERMOSTAT STUCK OPEN AND/OR THE PCM COOLANT TEMP GROUNDED.

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1 Answer

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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

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