Question about 2000 Cadillac DeVille

1 Answer

Car is overheating

Fans are working new thermostat will not hold water

Posted by motorworks08 on


1 Answer


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert that hasĀ over 500 points.


    An expert who has answered 200 questions.

  • Expert
  • 251 Answers

2 Inspect Belt Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s). car is overheating - grey_line.gif 3 Inspect Oil Pan Gasket - Performance Ruptured, cracked or leaking radiator hose. grey_line.gif 4 Inspect Radiator Cap Worn or damaged radiator cap 5 Inspect Thermostat Thermostat car is overheating - grey_line.gif grey_line.gif 6 Inspect Fan Blade Broken, micar is overheating - grey_line.gifective fan blade(s). grey_line.gif 8 Inspecar is overheating - grey_line.gifmp Damaged, worn or leaking water pump. grey_line.gif car is overheating - grey_line.gif Intake Manifold Plenum - Perform Leaking water pump gasket. grey_line.gicar is overheating - grey_line.gifi 10 Inspect Cooling Fan Control Faulty cooling fan control or circuit. grey_linecar is overheating - grey_line.gifh_mi 11 Inspect Cooling Fan Switch - Radiator Faulty radiator cooling fan switch or circuit. 12 Inspect Engine Temperature Sensor Faulty engine temperature sensor or circuit. grey_line.gif 13 Inspect Temperature Switch Damaged or faulty temperature swcar is overheating - grey_line.gifrature switch circuit. grey_line.gif 14 Inspect Fan Clutch Worcar is overheating - grey_line.gifaulty fan clutch. grey_line.gif 15 Inspect Ported Vaccar is overheating - grey_line.gifDamaged, leaking, or faulty ported vacuum switch. grey_line.gif 16 Inspect Radiator Obstructed radiator core or radiator cooling fins. grey_line.gif 17 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders here is a list of things to check Shaun

Posted on Nov 17, 2008


5 Related Answers

Mark Egan

  • 1214 Answers


Are you putting the thermostat in correctly? It it will not work backwards.

And to confirm that there isn't a different problem, take the thermostat out all together and see if it overheats.

Engine not fully warming up is not usually caused by the thermostat. Stats usually fail closed, not open.

You will want to check the water temperature sending unit or gauge after verify the water temperature with an external calibrated thermometer. You can attach and insulate the external thermometer to the housing where thermostat is located.

Reply back what you figure out. I will be happy to help you further.

Posted on Feb 03, 2009


Jack Resendes

  • 123 Answers

SOURCE: Mercedes 300te, overheating

put alot of antifreeze on the radiator.this just happened to me last week and now it is fine
bet it cools a bit while driving NO? and than when you stop the gage goes up

Posted on Apr 21, 2009


johnny wyatt

  • 453 Answers

SOURCE: Cooling fans will not kick in.

The fans won't kick on then you need to replace the coolant temp sensor this runs your fans.

Posted on Apr 22, 2009

nate hacker

  • 19 Answers

SOURCE: overheating

you might have a blown head casket try due a pressure test on each cylinder and sometimes you can take a spark plug out 1 by 1 and just tap the ket so it cranks and see if water comes out of the cylinder

Posted on May 21, 2009


  • 2309 Answers

SOURCE: my 1998 oldsmobile is overheating

that leaves the radiator or the head gasket, do a compression test, look at the plugs for a whitish deposit, sure sign of coolant, good luck

Posted on May 28, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers


Water pump or thermostat .

Jun 11, 2016 | Cars & Trucks

1 Answer

1984 f150 straight 6 300 overheating problems

-Check water. If it's low add more.
-If water is full then the thermostat is not open when temperature reach above its setting.
-Test the thermostat . If it's not working then replace new one.
-If it's working (Start to open when temperature reach about 185 and up) Then now you need to check the cooling fan sensor. If the thermostat is open but the cooling fan sensor not work and kick the fan than it'll be over heat too.

Good luck


Aug 11, 2015 | Cars & Trucks

2 Answers

Can my 2003 kia spectra run without thermostat

Clarify your question. If it is overheating with the new radiator, how badly?. bubbles in the overflow tank?
Jack up front and take cap off and burp radiator overnight.
One suspects air bubbles, or the wrong water thermostat not opening for whatever reason.ensure water thermostat has a hole drilled through it

If its the electronic 'fan' thermostat, you are addressing the symptom not the problem. If the car has 300kms/150K miles, could be a head gasket leak - exhaust to water. Check radiator fluid for traces of exhaust gas.

Jun 21, 2014 | 2003 Kia Spectra

1 Answer

I'm having problems with my 2000 honda. It keeps

A few questions first...are you sure its overheating and not just a bad temp sensor? is yes then how many miles on car? if over 90K than did you have the water pump replaced with your timing belt?Is your fan coming on at all? Is your radiator full?If your water pump has been changed and your radiator is full and your fan is working properly and you have a new thermostat then you should take your radiator off and have it flow tested to make sure its operating properly, and no you cant just pour water through it to tell if its working properly.

Oct 29, 2011 | 2000 Honda Civic

1 Answer

Motorcycle...1988 honda shadow 800.overheating,,tested fan works ..figured it was the thermo switch,put new one in filled up antifreeze,,still overheating,,does this bike have a thermostat in the...

the coolant sensor is in hot water and doesn't have to have circulation work
Check with a service center but as water circulation is controlled to maintain correct engine operating temperature
it should have a thermostat in the system

Jan 15, 2018 | Honda Civic Cars & Trucks

1 Answer

New water pump' thermostat,purge line. not heads or gaskets and still running hot

You say "Water pump thermostat" do you mean Thermostat or water pump? If you replaced the thermostat and still have an overheating problem then look at the water pump itself as the problem if that is replaced and you still have the problem then you have another problem in the engine or a clogged radiator core. You may have a lubrication problem in the motor, if the oil pump went out or your low on oil then the engine may be overheating from lack of lubrication. Another thing that will cause overheating is if the Fan is Electric and not activating or if the radiator fan is mechanical the clutch is not allowing the fan to rotate free when you are driving.

Feb 18, 2011 | 1996 Cadillac DeVille

1 Answer

My pulsar in overheating put new coolant in no change fans dont seem to be working but engine was hot and gauge showing only halfway, cant find the thermostate is it in the housing the top hose is...

Make sure the fans are coming on or it will over heat. If the fans come and the gauge is reading hot check the thermostat. Follow the top radiator hose to the engine block it probably has 2 bolts holding the thermostat housing on.

Apr 17, 2010 | 1990 Nissan Pulsar

2 Answers

Why does my cadillac 1998 deville keep overheating?

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.

Jan 30, 2010 | 1997 Cadillac DeVille

1 Answer

My 1995 dakota is overheating, replaced water pump, thermostat, fan. What to do????

if the fan is working properly, the only thing left to check is the radiator...

i may be clogged or damaged so the water can't travel in it properly...

Apr 28, 2009 | 1995 Dodge Dakota

Not finding what you are looking for?
2000 Cadillac DeVille Logo

Related Topics:

875 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides