Question about 1997 Cadillac DeVille

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Why does my cadillac 1998 deville keep overheating?

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Overheating can be numerous things: Fans not working, water pump, thermostat, overflow cap, and the list keeps going. When the engine is running and heats ups, feel the heat of the top hose, if the hose isn't hot, the thermostat is most likely stuck open and needs replaced. If it is hot we know you have circulation. The cap on the expansion tank may be defective, if it can't hold the pressure of the water, it will release at the overflow cap if the cap is bad. Also check the coolant level.

Posted on Jan 30, 2010

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There can be many things that could cause it to overheat. bad thermostat, low antifreeze, bad water pump, incorrect timing, blown head gasket, clogged radiator, collapsed radiator hose, broken fan. You could also have a defective gauge showing you are overheating when everything is ok.

Posted on Jan 30, 2010

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Posted on Jan 02, 2017

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SOURCE: MY 1998 CADILLAC DEVILLE REAR WONT RISE

arnott.com sells replacement shocks, take one of your orginal springs and go to a spring frabrication shop they should be able to fabricate a new spring for you with a 2 to 4 inch lift

Posted on Mar 02, 2009

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SOURCE: 1998 cadillac deville

try taking off your fuse panel cover, there should be a reset button in there.

Posted on May 06, 2009

ifixgm
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SOURCE: 1998 cadillac deville overheating

HELLO, OK WE MIGHT HAVE A WATERPUMP ISSUE.FIRS THE WATER PUMP ON THE 4.6 NORTHSTAR IS ON THE DRIVERS SIDE OF THE MOTOR AS VIEWED FROM THE FRONT.IT IS DRIVEN BY A SMALL BELT ON THE REAR OF THE MOTOR AND IS SLIGHTLY VISABLE UNDER THE METAL SHIELD REMEMBER THE DRIVERS SIDE IS TRULY THE REAR OF THE MOTOR.IF THE BELT IS GONE THE WATERPUP,BELT,BELT TENSIONER AND POSSIBLY THE DRIVE PULLY WILL HAVE TO BE REPLACED.* THE THERMOSAT IS ANOTHER POSIBILITY IF THE W PUMP IS OK.FINALLY THE HEAD GASKETS ARE ALSO AN ISSUE IN THAT YEAR HOW EVER YOU WOULD HAVE OTHER ISSUES (NO HEAT) GOOD LUCK RAY

Posted on Jun 21, 2009

roniecon
  • 6826 Answers

SOURCE: The temperature in our 1998 Cadillac Deville goes

check for air in system(cooling system) also check to see if cooling fans on radiator come on when car reaches about 225-230degrees, if not check relays and fans to see if they ar good if so see if both of them work (they should) if they both come on see if they go off if they dont ever go off then the engine is not cooling down have a tech. check it out ,could be a blown head gasket or worse

Posted on Jun 28, 2009

Kravcar
  • 192 Answers

SOURCE: 96 cadillac deville overheating

Check for coolant flow at the Purge line,this is a common problem on the Northstar.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.

Posted on Aug 14, 2009

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I have a 1998 Cadillac Deville with a northstar engine. I am having an issue with overheating and water not being taken into my radiator. I was told when i first bought it that it had a blown head gas


If you bought a car with head gasket issues
replace them,don't use it & ruin the engine

We can't guess at all the cars possible problems

People sell a car when they don't want the expense
of fixing it

The type problem is best left to a person that works on their
own vehicles & gets it cheap, knowing they have lots of
work to do every were ,to restore many things

Feb 08, 2013 | 1998 Cadillac DeVille

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Hello: Check the fuses in the fuse box under the hood, drivers side also check the fuses in the trunk fuse panel on the drivers side. If the tail light fuse is open that will keep the instrument lights out also.

Oct 08, 2011 | 1998 Cadillac DeVille

1 Answer

Overheating no signs of a bad headgasket it dosent miss no vapor from tail pipes no water in oil i am stumped


Hello rankflynn1 and thank you for asking your question, on Fixya.

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 1998 Cadillac DeVille, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people like you. So here is the link to:
How to diagnose an overheating Cadillac engine

Anyways if that helps you any little bit, then feel free to follow me on Twitter. That one is at: twitter.com/acoates23234

Thanks for the vote, and good luck!

Nov 17, 2010 | 1998 Cadillac DeVille

1 Answer

Was driving and it just overheated


Hello rg19409 and thank you for asking your question, on Fixya.

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 1997 Cadillac DeVille, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people like you. So here is the link to:
How to diagnose an overheating Cadillac engine

Anyways if that helps you any little bit, then feel free to follow me on Twitter. That one is at: twitter.com/acoates23234

Thanks for the vote, and good luck!

Nov 06, 2010 | 1998 Cadillac DeVille

1 Answer

What is considered the overheating temerature for a 1998 cadillac sedan deville?


I believe that if it goes above 260 deg. it will go into a safe mode for the engine where the cool air is pumped into 1/2 of the cylinders to keep it cooler.

If it gets to 220 or 230 deg. F, it's ok.

Aug 29, 2010 | 1998 Cadillac DeVille

1 Answer

When idle it overheat


Hello tmburns645 and thank you for asking your question, on Fixya.

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 1998 Cadillac DeVille, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people like you. So here is the link to:
How to diagnose an overheating Cadillac engine

Anyways if that helps you any little bit, then feel free to follow me on Twitter. That one is at: twitter.com/acoates23234

Thanks for the vote, and good luck!

Jul 08, 2010 | 1998 Cadillac DeVille

2 Answers

Car over heating/ running hot


Your radiator might have a clog and needs to be flushed...also check your water pump to see if its working right.

Sep 02, 2009 | 1998 Cadillac DeVille

3 Answers

99 cadillac deville


hello i have a 1998 cadillac deville course. an i been having the same over heating problems with mine i been taking it to mechanics an no one seems to know even the caddy dealship its overheating i checked the termostat water pump radiator all hoses was wondring could you tell me what you did or what you are doing to fix your problems my email is teree1234@yahoo.com thank you very much

Aug 02, 2008 | 1999 Cadillac DeVille

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