Question about 1999 Buick Century

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Why do my coolant keep running out - 1999 Buick Century

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If you have a 3.1L or 3.4L V6 engine, I can guarantee you have either an intake manifold gasket leaking, internally, or the rear head gasket is leaking externally. They are extremely prone to coolant leaks for both. Get it checked out soon, the head gasket job can cost upwards of $1000.00. The intake leak is half of that if caught in time.

Posted on Apr 01, 2011

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The cooling fan comes on five minutes after starting


Unless you have the A/C on, that may be normal. The cooling fans only run once the coolant temperature exceeds about 215 degrees. It runs until the temp is down to about 200 degrees. The fans will cycle on and off as necessary to keep the coolant within that range. When the car is in motion, the airflow thru the radiator is normally sufficient to keep the coolant stable and the fans do not run. Only if you turn on the A/C will the fans runs constantly, since the A/C system needs constant airflow thru the evaporator.

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How can I keep my cooling fans running all the time on a Pontiac Aztec (2005)


To keep them running, pull the plug off the engine coolant sensor. They will run even with the key on (PCM default). To get them to stop running, replace the engine coolant sensor.

May 16, 2015 | 2005 Pontiac Aztek

1 Answer

2004 monte carlo ss running hot on start up. Replaced thermostat and radiator cap.


CHECK COOLANT OVERFLOW JUG IF EMPTY ADD MORE COOLANT UNTIL COOLANT LEVEL STAY AT FULL COLD MARK.LONG AS COOLANT LEVEL OVERFLOW EMPTY KEEP COOLANT AT COLD FULL MARK.IF COOLANT OVERFLOW JUG YOUR RADIATOR COOLANT LEVEL LOW.

Sep 16, 2011 | 2003 Chevrolet Monte Carlo

1 Answer

CAR RUNNING HOT AFTER I CHANGED A BAD RADIATIOR OK RADIATIOR HAD A WHOLE IN IT WE CHANCED IT BUT NOW ITS RUNNING HOT HOW DO I PROPERLY REFILL THE RADIATIOR


CHECK COOLANT LEVEL STILL LOW.ADD MORE COOLANT.UNTIL RADIATOR OVERFLOW FULL AT COLD MARK.THEN CRANK ENGINE UP LET IDLE FEW MINUTES LOOK DOWN COOLANT OVER FLOW JUG ADD MORE COOLANT IF LEVEL DROPPED.WHILE ENGINE RUNNING KEEP EYE ON TEMPERATURE GAUGE.WHEN THERMOSTAT HOSE GET HOT.TURN OFF ENGINE WAIT A LITTLE WHILE TO KEEP FROM GETTING SCALD TAKE LARGE RAG PLACE OVER OVERFLOW JUG RADIATOR CAP.OPEN CAP A LITTLE A TIME.IF COOLANT TRIES BOIL OUT.LET VECHICLE SET A WHILE LONGER.ADD MORE COOLANT.WHEN COOLANT LEVEL CORRECT AND ALL AIR OUT THE COOLANT SYSTEM.IT WILL STOP OVERHEATING.LONG AS ENGINE RUNNING HOT TURN OFF THE ENGINE POUR IN MORE COOLANT UNTIL COOLANT LEVEL STOP DROPPING IN RADIATOR.KEEP COOLANT LEVEL IN OVERFLOW AT COLD MARK.DONT OVER FILL OVERFLOW JUG.

Jan 23, 2011 | 1996 Lincoln Continental

1 Answer

Engine is over heating unless you turn on defroster, then the fans come on , however interior temp switch , appears not to be working, because it continues to blow cold air into the vehicle,


May just be low coolant level. Remove rad cap, or if none, coolant return bottle cap, and start engine and run heater while doing this. Now pay attention to coolant level and add as needed to top up the system. Let it run with cap off until rad fan comes on and off, 2 or 3 times and keep adding coolant if level goes down. Keep an eye on temperature gauge while doing this. It almost sounds like your coolant got low, or is low, and your heater has an airlock. Once coolant circulates back through heater and level is correct, see what happens.

Nov 03, 2010 | 2000 Ford Taurus

1 Answer

My son's car overheated. Went to get some anti


The overheating is caused by the sludge. It is very easy to correct this problem. Remove the radiator cap and open the drain valve at the bottom of radiator. If possible, remove the reservoir and flush out with water. Make sure to get all sludge out of reservoir, then reinstall. Once the radiator stops draining, insert water hose (without nozzle) and turn water on. Keep the drain valve open. Run water through radiator until it runs clear. Once it runs clear, start the engine and let it run while keeping the water running through radiator. Allow engine to run until the thermostat opens up. Continue running water through radiator with engine running until the water from drain runs clear. Once you have done that, turn off the engine. Close the drain valve and refill radiator with proper mixture of coolant and water. Once radiator is filled, start engine and let circulate through engine. Coolant level will drop as the coolant starts circulating. Shut off engine and top off radiator. Fill the reservoir with the required amount of coolant. Testing the coolant at least once a year will help prevent this from happening again. Coolant should be replace a minimum of five years, less if coolant bottle specifies.

Jun 20, 2010 | 1994 Pontiac Grand Prix

1 Answer

My car keeps running hot


first,coolant .
check the coolant motor fan and fan relay. if coolant motor fan doesn't works, it can cause the car running hot or over heat.
check coolant

Apr 20, 2010 | 1996 Honda Accord

1 Answer

1997 2.4L Chevy Cavalier LS; Low Coolant Indicator and Temp Gauge


take the cap off of the radiator (whil engine is cold) start and run the vehicle. keep runnig 30mins after the vehicle is hot keeping notice of the rad fluid level.
keeping the cap off will prevent the pressure build up that woiuld keep the air in the system, keep adding water or antifreeze as the level goes down. this may take an hour or so.
also with the cap off, you will be able to see if your water pump is operating correctly. you will visibly be able to see movement in the rad when the pum is engaged.

May 26, 2009 | 1997 Chevrolet Cavalier

2 Answers

How do i refill the coolant in the car after replacing upper hose


hello, your car has a reservoir tank were you put the coolant in at all you have to do is start your car and it'll draw coolant from there after your car runs a few minutes check your coolant reservoir tank it;ll probably be close to empty also since you took your hose off you'll have air in your system that you'll need to bleed out of the system otherwise your car will over heat and you wont get proper coolant flow the bleeder valve is a small brass bolt that you can use a wrench to open and close it with, with your car running just open the valve until you see coolant flow out then close it do this till you get a solid stream of coolant flow and check your reservoir often while doing this keep it full.

Apr 05, 2009 | 2005 Dodge Magnum

1 Answer

1991 Toyota 4x4, 4 cyl. engine. Surges when coolant level is low, even though it has not yet heated up.


your carb has a coolant heated choke system if i am correct as car warms up the coolant warms the choke spring. keep full of coolant to keep from other damage

Aug 20, 2008 | 2004 Toyota Corolla

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