Question about Cadillac DeVille

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I am having trouble trying to locate the thermostat on my cadillac it needs to be replaced cause its making our car overheat.

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Follow the top radiator hose to the intake and your themostat is under there. what year is the car

Posted on Jun 27, 2009

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My 1996 Cadillac fleetwood had a leacing radiator so I changed it and now it won't stop overheating any tips


Make sure that the thermostat is working properly. It is a good idea to change the thermostat when you change a radiator. How long does it take to overheat? You can leave the radiator cap off, start the car and wait for it to heat up and see if the fluid is pushed into the radiator. If not and the car overheats then you know that the thermostat is bad.

Sep 11, 2016 | 1996 Cadillac Fleetwood

Tip

Cadillac Northstar Overheats


This can be caused by a number of things most commonly failed headgaskets. You can use a cooling system pressure tester to pressurize the cooling system to see if it holds pressure if not then the headgaskets are likely leaking. You can also get a chemical tester to check for exahust gas in the coolant, if exhaust gas is present then replace the headgaskts. If both tests turn out fine first make sure your cooling fans are working if so remove your thermostat to see if engine stays cool, if so replace thermostat. If nothing works up to this point you may have a broken water pump or clogged radiator. You can use a laser temperature gun to check for hot/cold spots on the radiator if you find any replace. Otherwise remove the water pump to make sure the plastic impeller is not boke and still attatched to the shaft.

on Dec 21, 2009 | Cadillac DeVille Cars & Trucks

2 Answers

Why is my 2001 cadillac running hot?


With the thermostat out you should see a lot of circulation. If not investigate water pump. Is the fan electric fan working? Bypass the relay and run the fan whenever the engine is running. If it doesn't overheat with the fan running then investigate fan control. make sure the coolant is topped off and use a thermometer in the radiator to verify temperature.

Sep 17, 2014 | 2001 Cadillac DeVille

1 Answer

I HAVE 95 CADILLAC SEDAN DEVILLE. IT SPUTTERED AND SHUT DOWN TODAY AND WHEN I LIFTED THE HOOD, I NOTICED A BROWN SUBSTANCE INSIDE THE RADIATOR , AND IN OVERFLOW. THE CAR WOULD TURN OVER , BUT WOULD NOT...


The brown substance in the radiator and overflow indicates 2 things:

1. Rust in the coolant indicating the system needs to be flushed

2. Stuck thermostat making the rust back up into the overflow

If the car didn't overheat when it shut down, the problem is probably a fuel related issue. If there was an overheat when it shut down, you will need to identify whether you have a bad water pump or thermostat.

Oct 01, 2011 | 1995 Cadillac DeVille

2 Answers

Yesterday my 1988 cadillac eldorado's engine got very hot, even though it didn't overheat and all the fluids are fine including the antifreeze. I only drove around 10 miles. Do you know what might...


DOSE IT HAVE ELEC FAN MOTOR OR MECH FAN IF ELEC ITS THE SENSOR TO TURN TH FAN ON CAN BE JUMPED OUT INCASE OF EMERGENCY IFF MECH FAN NEED THERMOSTAT

Jul 28, 2011 | 1988 Cadillac Eldorado

1 Answer

I have a 96 Cadillac Deville. The car overheats


i would get a radiator tester to make sure there is no air leaking out at a slow rate

May 05, 2010 | 1996 Cadillac DeVille

3 Answers

How to tell if water pump for 04 cadillac srx needs to be replaced.


Your car will overheat very fast and you may either notice coolant leaking from the location of the pump and also possibly a squealing noise due to a bad bearing. Overheating can also be caused by a bad thermostat.

Feb 17, 2010 | 2004 Cadillac SRX

1 Answer

Cooling fan runs constantly. Car overheats.


check engine temp sensor if ok check fan relay

Jul 07, 2009 | 1998 Cadillac Eldorado

1 Answer

2001 Cadillac Deville coolant bleed screw Location??


I had the same problem with my 2001 Cadillac Deville, like you I had replaced literally everything thermostat, water pump, radiator, temperature sensor, reservoir and cap, hoses etc....I didnt have any leakage. I was told I had air in my coolant system. After a lot of research and running across the right mechanic I was able to locate the bleeder and remove the air from my lines. No problem since. The bleeder is located on yhe left side of the radiator on the crossover, mines was sideways..Hope this helps someone before they spend money for new head gasket problems..Try this it helped me....

Mar 25, 2009 | 2001 Cadillac DeVille

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