Question about 2001 Cadillac DeVille

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Why would. Y Cadillac Deville overheat when I don't turn my heat on right away when first starting the car, on the other hand it doesn't when I do turn the heat on right away, why is this happ

If I do not turn the heat on as soon as I turn the car on it over heats or if I'm in a idling state.... But if I turn it on right away it does not.. Why is it doing this can you help?

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  • 18 Answers

Sounds like a thermostat problem or pressure cap

Posted on Jan 06, 2013

Testimonial: "Thank you for yor insight to my question I will take your advice and go have my thermostat check and see if it indeed is that or another problem, thank you again... "

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Posted on Jan 02, 2017

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Kravcar
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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

  • 97 Answers

SOURCE: 2001 cadillac deville, overheats without loss of coolant

First, provided their are no visible coolant leaks and/or loss of coolant with no signs of leaks, I would thoroughly flush cooling system and replace coolant, then check and/or replace thermostat (you can place thermostat in boiling water to check for proper function), if you have tried these 2 steps and still are experiencing overheating you may need to replace your water pump which can be a tricky job if you're unfamiliar and try to do it yourself, however, I could walk you through it if necessary. Also visually check your radiator hoses for bulges, wear ,etc along with heater hoses etc. You may want to also check radiator fins to see if they are dirty/obstructed and clean if necessary. Let me know if I can assist you further and how it works out

Posted on Aug 30, 2009

  • 4 Answers

SOURCE: 1999 cadillac deville air wont work

There's a blower motor (fan) under the hood and up against the firewall near the center of the car that takes some work to remove. It has gone out in the last 2 of my 4 Cadillacs. Turns out if you're not real careful with the positioning of the spark plug wires they will brush up against it, and if one of them gets cracked or brittle it will "arc" and short out the blower motor. The a/c compressor should still come on (you'll hear a click when it engages) but you won't get any air blowing into the cabin, hot or cold.

The part was like $200 stock (year 2000 prices) and it took about an hour to remove it. My Caddy at that time had this damn strut bar going across the engine bay which we eventually removed to get to the blower motor.

Posted on Apr 09, 2009

  • 39 Answers

SOURCE: 94 cadillac sedan deville

Disttributor is bad had same promblem..........

Posted on Jun 26, 2009

  • 14036 Answers

SOURCE: 1991 cadillac sedan deville has excess pressure in

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.

Posted on Oct 31, 2010

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1 Answer

My heat doesn't work on my 1999 Cadillac Deville


Start with the basics, check to make sure you have thermostat, h And the heater hoses. On a lot of the older cars. This would help prevent the older car from over heating. Just a suggestion.

Sep 22, 2013 | Cars & Trucks

1 Answer

I have a 98 DeVille and it's overheating with some moisture coming out the tail pipe, but no oil and water mixture. There is no visual leaks at the moment. I just bought the car and test drove the


For car running hot and overheating issues, I suggest to you go through this help links.

Click this link below and go through the troubleshooting procedure to take care of the problems: ----



Car runs hot?

http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
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All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
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Car freeze overnight and started overheating while driving?

http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html

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Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------

overheating?

http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
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Car engine Overheats and transmission starts slipping?

http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.

Feb 03, 2012 | 1998 Cadillac DeVille

1 Answer

My 1996 cadillac deville overheats. i replaced the thermostat and water pump.. cooling fans do not turn on the only way to drive my car without it overheating is to turn on the a/c??? please help me


Hi Malik,
Thank you for choosing me to help you with your problem. In order to help you find out what to do with your Cadillac, I need to ask a few questions and get more information.
First, I need to ask you: When you turn the A/C on do BOTH cooling fans come on? If not, which one is coming on? The Left (driver's side) or the Right one?

Aug 09, 2011 | 1996 Cadillac DeVille

2 Answers

I have a 1997 cadillac deville and it keep over heating. i have changed the hose out twice and checked for leaks, plus i my fan is working fine...


Check the waterpump and thermostat. When the waterpump doesn't turn, engine heat is not transported to the radiator. When the thermostat doesn't open once warm the same happens - no engine cooling.

The radiator should be hot op top and cooler at the bottom. If it's cold allover then there's no cooling fluid transport

Jun 29, 2011 | 1997 Cadillac DeVille

1 Answer

I bought a 2001 cadi deville w/ a northstar engine.Drove car at night when it was about 60 degrees for about an hour it drove great. Next day it was very hot out and drove for an hour and car overheated....


Hello, The blue fluid will turn yellow, once you use the fluid throw it away. Do not mix it with the good fluid left over. I have never kept it long enough to see what happens later. It also sounds like you have a plugged radiator. Someone may have put stop leak to try and cover up a leaking head gasket.

Oct 05, 2010 | 2001 Cadillac DeVille

1 Answer

1997 cadillac deville heat or ac wont come on at all. i hear it as if its about to start blowing but nothing comes out. i swear i heard something overheat and make a weird buzzing soud somewhere inside the...


right the heater rad is leaking or a pipe is loose or a tap ,their could be a relay or a control if its clima which is what i suspect if its a caddy ,best one here is to ask a local mechanic to have a look then come back on here to confirm ,very difficult to diagnose without my greasy hands under the bonnet.

Mar 08, 2010 | 1997 Cadillac DeVille

1 Answer

No heat


check for air bubbles in the system also check the pressure cap and have it tested also squeeze the upper radiator hose together and if it doesn't open up in your hand right away the water pump could be weak work on getting the air bubbles out first before going to the water pump

Jan 22, 2009 | 2002 Mazda Millenia

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