Question about 1999 Cadillac Eldorado

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Check coolant level warning keeps coming on..No leaks but using a lot of coolant

Putting a gallon of coolant in every week and a half.Is coolant burning up inside engine

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  • Expert
  • 325 Answers

Sounds very much like blown head gasket futher investigation is needed.

Posted on Jan 05, 2013

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

dealt_soul
  • 296 Answers

SOURCE: im receiving a check coolant

No the light is linked to a sensor. There is a coolent sensor that tells you that the level is low. It sounds like the sensor has gone bad. And the sensor is located in the coolent tank. If it is bad from my understanding you have to replace the whole tank. But take a paper clip with the engine off and disconnect the wire harness from the sensor and jump the wires and see if the light goes off.

Posted on Jan 20, 2009

  • 611 Answers

SOURCE: coolant system

cooliant level sensor at the bottom of ur cooliant tank

Posted on Jun 16, 2008

  • 2692 Answers

SOURCE: 99 Cadillac Deville Coolant Leak

Most likely a cracked block or free plug that came out or loose. Other options are hozes, which I believe the dealer would have fixed. A third option is the water pump itself. 

Posted on May 06, 2009

  • 8 Answers

SOURCE: reset check coolant level message

the floater inside the coolant gets stuck t wont overheat it is just a pain to see the light all the time

Posted on Aug 02, 2009

  • 534 Answers

SOURCE: 99 deville head gasket leak?

A head gasket leak is usually indicated (among other things) by continous overheating of the motor, and subsequent loss of coolant.
It can also be indicated by the presence of engine combustion gas bubbles in the coolant resevoir.
Ensure the coolant system has no external leaks, such as faulty hose/s, radiator etc.

Ensure motor tune or other motor mechanical condition is not the cause of overheating.
I assume the motor is actually running hot.

Check cooling fans are operating ok (as necessary when car warms up):- if not check
1) fuse,
2) relay operation,
3) heat sensor switch.

Check/replace the thermostat,
Check the coolant pressure cap is serviceable & of correct rating,
Ensure cooling system is correctly filled, bleed off any airlocks as necessary when re-filling,
Ensure radiator hose on suction side of waterpump is not collapsing at engine revs above idle (due softening),
If the motor has been severely overheated, the head gasket could be blown - look for combustion gas bubbles in the coolant resevoir.

Posted on Sep 21, 2009

Testimonial: "thx..my car is not overheating.only had to pull off road once.it does get to 233 sometime."

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So it was about half empty and they said it was OK. Keep check on the coolant. Look for leaks.

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If you're going through 1/2 gallon every few weeks - you've got a leak. Since you smell it from the heater vents - it may very well be the heater core ($$$) that is leaking. Usually, you'll notice that the windows will fog up heavily as the coolant is very hot / steamy once the engine has warmed up fully.

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Generally speaking, if there are no external leaks, odds are the engine is burning the coolant out the exhaust pipe due to a leaking intake or head gasket.
I have a 97 Nissan that drinks a half gallon per week but still runs.

Mar 08, 2014 | 1999 Chevrolet Monte Carlo

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Radiator fluid disappers with out a leak


Half a gallon a week? Bad for the car, bad for the pocketbook.
Have a shop do a pressure test of your coolant system to check for leaks. You might also want a block test where they check for exhaust gases getting into the coolant system-maybe your coolant is getting into a cylinder and burning off. How does the car run? any white smoke out the exhaust? Or signs of overheating?
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Looking for the fill plug on a 200 dodge darango 4 wheel drive front punkin all i see is a vent pipe


COOLANT-ADDING ADDITIONAL
Do not remove radiator cap to add coolant to system. When adding coolant to maintain correct level, do so at coolant reserve/overflow tank. Use a 50/50 mixture of ethylene glycol antifreeze containing Alugard 340-2 y and low mineral content water.
Remove radiator cap only for testing or when refilling system after service. Removing cap unnecessarily can cause loss of coolant and allow air to enter system, which produces corrosion.

COOLANT LEVEL CHECK
The cooling system is closed and designed to maintain coolant level to top of radiator.
WARNING: DO NOT OPEN RADIATOR DRAINCOCK WITH ENGINE RUNNING OR WHILE ENGINE IS HOT AND COOLING SYSTEM IS UNDER PRESSURE.
Remove radiator cap. The coolant level should be to top of radiator. If not, and if coolant level in coolant recovery bottle is at ADD mark, check for:
  • An air leak in coolant reserve/overflow tank or its hose
  • An air leak in radiator filler neck
  • Leak in pressure cap seal to radiator filler neck
TRANSMISSION and OIL LEVEL CHECK TUBES
pctech1_27.jpg

Mar 04, 2011 | 2000 Dodge Durango

1 Answer

1991 Cadillac Fleetwood. The heater was working on passenger side but not that warm. Added antifreeze. Seems to be leaking it. Keep adding. gone thru 2 gallons. How do i get heat.


If you've added two gallons of antifreeze, you need to find out where it's going. Make sure the antifreeze you are adding is diluted with water in a 50/50 solution. Pure antifreeze has little freeze protection and boils quickly. If there is no visible leak, check your oil for coolant contamination. Fill the radiator and leave the radiator cap off. Put the heater controls on hottest setting, but do not turn the heater on. Start the engine and watch the coolant. If the coolant level drops, add more to full. If the coolant is flowing thru the radiator when you first start the engine, the thermostat is stuck open and needs to be replaced. If the water is not flowing, then keep an eye on it and wait for the thermostat to open. Add antifreeze to keep the radiator full. Look for air bubbles or lots of foaming in the coolant. That would indicate a blown head gasket and the reason you are losing antifreeze. If there's no bubbles, and the coolant level stays full, put the radiator cap back on and see if the heater is working better.

Jan 11, 2011 | 1991 Cadillac Fleetwood

1 Answer

Over past 3 weeks car has used 2 gallons of coolant with no leak


It is either being burned off in the combustion chamber or leaking into the oil pan.
Check your oil level on the dipstick and note any abnormalities; way overfilled, foamy, tan colored, etc.

If nothing, have the cooling system pressure tested.

Note that GM issued a recall on these vehicles for intake manifold coolant leaks, resulting in your situation exactly. Verify the recall has been performed.

Oct 17, 2009 | 1999 Pontiac Grand Prix

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Oct 16, 2009 | 1999 Hyundai Sonata

2 Answers

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