Question about 2000 Toyota Corolla

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Car running hot. Need to check coolant level. manual says there is a see-thru reservoir but I can't locate it.

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Find the radiator cap, there is a small hose attached to it, now follow that hose, it ends at the reservoir, thats you are looking for. you need to check the radiator level, but only take the cap off when its cool. it you have to add any coolant, find out why. overheating is the number 1 killer of cars.

Posted on Sep 28, 2009


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Location of the engine diagram for a 2000 Buick Century. The engine has overheated when the coolant reservoir has water still in it.

On a cold engine, remove radiator cap, where applicable, is there coolant in the radiator? Usually the reservoir has cold and hot coolant levels marked on it. If it got too hot that reservoir would fill up in a hurry. When it got hot, what was the temp reading in degrees F? When it got hot, was the radiator fan running?
If your thinking thermostat, the engine side of upper radiator hose, should go to thermostat housing. Have to remove thermostat housing to get at thermostat.
Any applicable trouble codes? Some of the national brand auto stores will check po codes for free or use an obd2 code reader to check codes, yourself. There could be other issues, coolant temp sensor, gasket problem--if combustion gases in the coolant.

Jul 05, 2017 | Buick Cars & Trucks

2 Answers

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.

You may also have flaky thermostat that is not opening fully when needed to exchange hot water in the engine block with cooler water in the radiator.

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.

Hot Engine
(1) With the engine hot, add enough coolant to the tank to bring the level to the HOT line. You may have to check the tank several times after driving if the coolant level in the radiator is down a great deal. NEVER open the radiator cap when the engine is warm or hot!

Cold Engine
(2) With the engine cold, add enough coolant to the tank to bring the level to reach COLD line. Additionally - with the engine cold - you can add coolant directly to the radiator by removing the cap. Start the engine, set heat in car to HOT and add coolant mixture to radiator until level comes up to the bottom of the filler neck. Once the engine is HOT (getting heat in the car) check and top off radiator as needed and put cap back on radiator.

Check the levels in the TANK several times over the next few days when cold. If the tank ever empties -you'll need to have this looked at by a mechanic.

Apr 09, 2015 | 2009 Dodge Journey

1 Answer

Y dose the john dear 6330 run hot all the time even after it blowen out

Engine or hydraulic system overheating clearpix.gif clearpix.gif clearpix.gif clearpix.gif clearpix.gif clearpix.gif Coolant system low on coolant in 6020, 6030, 6030 Premium, 7020, 7030 and
7030 Premium Series Tractors.

After several hours of work, warning system indicates hot engine coolant or hot hydraulic oil.
Situation or Problem
Coolant level in reservoir is between the "MIN" and "MAX" range but engine or hydraulic system is overheating.
Air is entering cooling system, hindering coolant flow. Check coolant level. Fill to the "MAX" line on the coolant reservoir.
Bleeding Cooling System:
The bleed valve (see Operator's Manual for location) on the radiator must be closed when the tractor is operating. Open the valve when coolant is drained or filled. If the bleed valve is left open, coolant will internally bypass between the low temperature circuit and engine high temperature circuit causing overheating. When bleeding the system, open the bleed valve and run the engine with no load for 5 minutes at 1700 rpm. Then shut engine off for 5 to 10 minutes before closing the drain valve. Check the coolant level. If level is below the "MAX" fill line, repeat this procedure until coolant level stays at the "MAX" line.

May 21, 2014 | Cars & Trucks

1 Answer

How do you open the moist cap? i want yo fill it with water but it wont open

What is this cap on?? Radiator or windshield washer reservoir? Something else?

If the radiator, most newer cars have a plastic bottle or tank that has a "cold" and "hot" level indicated. You should be able to see the coolant level thru the tank. You should NOT need to open the radiator cap if your car has this tank. Add a 50/50 mixture of water and coolant (of a type your car requires) up to the "cold" mark and start the car. Let it run with the heater set to HOT and fan set to HIGH. Continue adding the 50/50 mixture to maintain the coolant level to the HOT level mark on the tank as needed with the engine running. Stop when there is HOT air blowing out of the heater.

If your car does NOT have this tank, you may only open the radiator directly when the engine is COLD. Wait several hours for the engine to cool after shutting off before attempting to remove the cap.

When cold, press DOWN on the cap WHILE turning. Most caps will come off after a 1/4 to a 1/2 turn. Start the engine and set heater HOT and fan to HIGH. Continue to add a 50/50 mixture of coolant to the radiator until the heater blows HOT air. The coolant level in the radiator should be just under (1" or less) from the bottom of the radiator opening.

Was this the info you're looking for?

Sep 13, 2013 | Cars & Trucks

1 Answer

Heater works while car is at an idle but not while driving

The expansion tank/coolant reservoir is supposed to be vented at all times. You should not have to "bleed" air from it. Your coolant is not circulating thru the heater core because of this and you continue to have this problem if its sealed. It may even explode from the coolant being hot if not vented. Once it's vented, just top off the radiator and fill the reservoir over half way or to a mark that should be on it then drive it around. Keep a check on the reservoir coolant level and keep it half way up and you'll be fine.

Jul 07, 2017 | 1997 Lincoln Town Car

1 Answer

Engine is too hot, water circulation n radiator okay.

Check the coolant reservoir tank and fill if needed. Most modern cars have a plastic reservoir of coolant connected to the top of the radiator. This will allow you to see if your coolant is low. Many have marks indicating the proper level of coolant when the engine is hot. Check to see if the coolant is at that level.
Add coolant (or water, in a pinch) to your reservoir to the full/hot line. On most cars, you can add liquid to your reservoir even if the car is hot. Check the owner's manual to be sure, or wait for the car to cool before opening.
If your car only has a radiator and no coolant reservoir, you must wait for it to cool before checking the level of coolant.

May 31, 2012 | 2000 Kia Sportage

1 Answer

Temperture gage starting to fluxuate while driving.

This can be caused by an insufficient coolant (aka antifreeze) level. Look at the coolant level in the reservoir under the hood. There should be two marks on the bottle "warm" or "hot" and "cool" or "cold". If the engine has been running for a while as in the case when the car has been driven few miles, the coolant level should be up to the "warm" or "hot" line on the bottle. If the car has been parked without the engine running for a couple of hours or more, the coolant level should be at the "cool" or "cold" line on the bottle.

Never remove the radiator cap when hot or if the engine has only been been stopped for less than 2 or 3 hours.

If the hot coolant is at a level that is below the warm or hot line, you should add more of the coolant / water mixture only to the reservoir - not to the radiator. If you are only able to check the coolant level when it is hot - you will have to repeat this procedure until the coolant level of the reservoir is maintained. Checking the hot coolant level can only be done when it has been allowed to cool between hot checks. The cooling period is the only time when coolant is drawn from the reservoir back into the radiator.

If the cold coolant is at a level below the cool or cold line of the reservoir you should add more of the coolant / water mixture to the reservoir and to the radiator, too. Fill the radiator to the top of the neck where the tube from the reservoir connects to it.

If you're still having widely fluctuating temperatures while driving at normal operating speeds, there may be a problem with the water pump, thermostat or other portion of the cooling system.

I hope this helps & good luck!

Oct 19, 2011 | 1994 Toyota Corolla

3 Answers

I am getting message "Coolant low". My sister

Welcome to Fixya

You need to add few ounces of coolant to the reservoir. The reservoir is located under the hood. It is a white plastic that has liquid in it. Please see picture below of the coolant reservoir.
Thank you for using Fixya!

Oct 01, 2011 | 1999 Jeep Grand Cherokee

1 Answer

Need to locate coolant reservoir in 2004 Chevy Impala engine 3800 series 2

The coolant recovery tank is located between the power steering fluid reservoir and the underhood fuse block in the engine compartment on the passenger's side of the vehicle. .

The vehicle must be on a level surface. When your

engine is cold, the coolant level should be at the COLD

mark or a little higher. When your engine is warm,

the level should be up to the HOT mark or a little higher.

Jan 20, 2011 | 2004 Chevrolet Impala

1 Answer

Sometimes car will get hot. radiator will b dry. other times its fine

Check ur radiator cap! Mostly when the engines become hot, coolant goes thru the coolant reservoir and comes back to the radiator when it cools down. Damage radiator caplet the coolant goes thru the reservoir but can't siphon back the coolant to radiator , thus always overflows the reservoir and the radiator dries out from its coolant! Check also if there is LEAKS in the bypass hoses and CAP PLUGS! Hope that might help u out!

Nov 16, 2010 | 1998 Honda Civic

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