Question about 1997 Cadillac Seville

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1997 cadillac deville overheats antifreeze comming from overflow tank hose to the ground

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Check cooling system for presence of exhaust fumes. Your unit has head bolt issues and compression gasses enter cooling system. VERY expensive to repair correctly.

Posted on Sep 07, 2010

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Posted on Jan 02, 2017

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Leaking water on 4.6 2000 deville on right side against firewall possible causes


Is it antifreeze or just water? If water, your AC system will frost up under use, which will melt and pool under the car on the passenger side (normal) after the engine stops. If antifreeze, there is a complicated cooling hose system, with some of them near the firewall. Check the overflow tank to see if you are losing coolant, and if so, check the hoses there while the engine is running.

Mar 02, 2017 | 2000 Cadillac DeVille

2 Answers

What is the normal operating temp in cooling system of a northstar engine?


For my 1997 Cadillac Deville limousine with 4.6 L Northstar it should be 196 to 205 deg. And top out at no more than 230 deg. F. Check multispeed fans for high speed turning over and antifreeze fluid level in overflow tank. Also, check for head gasket leaks through tailpipe which will show up as steam when you start the engine.

Sep 05, 2014 | 1997 Cadillac DeVille

1 Answer

Causes overheating


If you have done all that, it leaves the water pump and the fan.....how long does it take for it to overheat? Does it overheat sitting at idle in the driveway?

Aug 19, 2013 | 1997 Cadillac Seville

1 Answer

Need to find out where overflow hose connects tried following it but it just ends underneath where i put antifreeze in 97 cadilac deville


There is an over-flow hose between the coolant recovery tank, and the top of the radiator just below the radiator cap, and there is also an over-flow hose from the top of the coolant recovery tank and it just hangs over the side of the recovery tank and runs the over-flow off out under the front of the passenger side fender well area.

Sep 10, 2010 | 1997 Cadillac DeVille

1 Answer

I have changed the radiator and thermastat and upper hose but it still overheats and leaks out the overflow but the water pump is good so what is the prob please help


replace your radiator cap.Cap is not holding pressure letting antifreeze escape past it to overflow then on the ground.When enough antifreeze has escaped engine starts to overheat.

Aug 09, 2010 | Dodge Neon Cars & Trucks

1 Answer

What coolant go in 1995 cadillac deville


I would use any Dex Cool approved coolant, but if you're on a budget, I would use any antifreeze that says that it can mix with any color antifreeze. The warranties are the same on both types generally 5 years or so.

The antifreeze sold at Walmart for car radiators is good (but don't use the pink antifreeze used for RVs for winterizing plumbing)

Use a 50/50 solution of water to antifreeze by volume when topping off yor radiator through the overflow tank.

May 10, 2010 | 1997 Cadillac DeVille

1 Answer

Antifreeze overflow from tank


I would check for visible cracks and leaking at the overflow tank when the engine is cold, then when the engine is running and at operating temperature and not running and at operating temperature as well as during cool down. Also check the coolant overflow hose for leaks or obstructions inside the hose or if the hose is kinked. Check to make sure that the overflow tank cap is damage free and securely fastened.

May 05, 2010 | 1997 Saturn SL

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

2 Answers

Water coming from engine into overflow tank


Sounds like an overheating problem, best to get it checked, maybe thermostat stuck closed, pluged radiator, head gasget, cracked head.

Feb 08, 2009 | 2000 Cadillac DeVille

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