Question about 2004 Chevrolet Monte Carlo

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How much coolant do I need in the tank. I can't see the cool or hot marks/lines on the tank and my hot coolant warning light is on and the cvar is pegged at the high temp mark

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When in doubt make sure it is at least halfway filled. The tank is only there to allow for expansion, 90% of the coolant is in the engine block and the radiator, so overfilling the tank leaves no space for expanding liquid and you end up with a burst hose. Problems with overheating are because of low coolant, inoperative fans(temp will come down while driving at speed) Faulty pump : it'll overheat quickly and stay hot even while driving. Clogged radiator : same as a faulty pump. Stuck thermostat : engine will be boiling while the radiator is relatively cool.
To clean out the tank use a bottle brush.

Posted on Jul 11, 2010

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Posted on Jan 02, 2017

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What to do when 2006 Chrysler Pacifica engine temp warning light comes on?


Do not continue to operate. Operating an overheated engine will cause the engine to fail.

After the engine has cooled,
Confirm that the engine has coolant.
Confirm that the reservoir is full to the mark
Start engine and confirm as engine gets warm cooling fan at radiator turns on

Confirm that the rubber engine belt is working
Put in car heater to full hot and blower on.
Confirm heat is hot from car heater.
If heater is not hot possible water pump failure or air in coolant system keeping the coolant from circulating.
Allow to cool completely.
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Check for water in oil by pulling dip stick
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Where do I start to look at when engine overheats when air conditioner is on


The A/C causes the engine to work harder (that's why fuel economy suffers when it is run).

If your car has an electric fan - make sure it runs when the engine is hot. If it does not - you may have trouble w/o the A/C running if is gets warmer outside. Look for fail fuses, disconnected plugs, etc.

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First, check the coolant level. You should find a semi-transparent reservoir / tank located under the hood that has a cap marked "Coolant". The side of the tank should have two indicator lines - one for HOT and one for COLD. If the engine has been run up to normal temperature (so that it can provide heat in the car), you should see the coolant level at or slightly above the HOT line. If the engine is cold - first thing in the morning or after sitting for several hours - the coolant should be at or slightly above the COLD line. View these levels while the engine is off and the car is parked on a flat, level surface. If there is not enough coolant - you will need to add the CORRECT type for your car.

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or:
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