Question about 2000 Dodge Caravan

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Overflow losing coolant

The overflow bottle keeps losing coolant too rapidly. Having to add often. What might be the problem? I noticed today that at the back of the coolant bottle (on the top) there is a piece that extends down that has an open hole. Is that hole there in case too much fluid in it and it allows it out or is that hole supposed to have a plug or be attached to something?

Thanks!

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You need to have a pressure test performed on your cooling system. likely causes are water pump or radiator leaking

Posted on Oct 02, 2008

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This is an overflow tube.
have you checked the radiator itself to see if it is low? need to do this only when engine cool.
if radiator is low and you just add to bottle it will **** it all out until radiator is filled properly.

Posted on Oct 01, 2008

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No my alero is overheating. I have replaced the thermostat and waterpump and put a new cap on reservior and im losing coolant out the overflow


YOU NEED BLEED AIR OUT THE COOLING SYSTEM.WAIT TO ENGINE COOL DOWN.YOUR VECHICLE YOU HAVE TO POUR COOLANT IN THE COOLANT OVERFLOW JUG UNTIL COOLANT LEVEL STAY AT THE FULL COLD MARK.THEN START ENGINE LET IT IDLE A FEW MINUTES WATCH COOLANT IN THE OVERFLOW JUG WHEN IT DROPS ADD MORE COOLANT UNTIL COOLANT LEVEL STAY AT FULL COLD MARK.WHEN COOLANT LEVEL STOP DROPPING IN OVERFLOW JUG.SCREW RADIATOR CAP BACK ON OVERFLOW JUG WATCH ENGINE COOLANT TEMPERATURE GAUGE AS COOLANT TEMPERATURE START CLIMBING TURN OFF ENGINE LET IT SET A WHILE KEEP FROM GETTING SCALDED.TAKE LARGE RAG PLACE OVER COOLANT OVERFLOW JUG CAP SLOWLY OPEN RADIATOR CAP A LITTLE AT A TIME UNTIL PRESSURE RELEASE.REMOVE OVER FLOW JUG CAP.ADD MORE COOLANT UNTIL COOLANT LEVEL AT THE FUL COLD MARK ON THE OVERFLOW JUG.THEN SCREW CAP BACK ON THE OVERFLOW JUG.START ENGINE LET IT IDLE AGAIN WATCH ENGINE COOLANT TEMPERATURE GAUGE WHEN TEMPERATURE GAUGE START CLIMBING.TURN OFF ENGINE WAIT A WHILE.CHECK COOLANT LEVEL IN THE OVER FLOW JUG.DO THIS PROCEDURE UNTIL THE COOLANT LEVEL IN THE COOLANT OVERFLOW JUG STOP DROPPING AND STAY AT FULL COLD MARK,WHEN THE TOP RADIATOR HOSE GET HOT THERMOSTAT OPENING AIR IS OUT THE COOLANT SYSTEM. WHEN ENGINE COOLS DOWN.CHECK COOLANT OVERFLOW JUG COOLANT MUST BE IN THE COOLANT OVER FLOW JUG AT THE FULL COLD MARK WHEN ENGINE COLD. DONT .DONT OVERFILL COOLANT OVERFLOW JUG.KEEP COOLANT IN THE OVERFLOW JUG IF YOU LET COOLANT OVERFLOW JUG RUN DRY AIR WILL BE DRAW IN COOLANT SYSTEM CAUSE ENGINE TO OVERHEAT.

Aug 12, 2011 | 1999 Oldsmobile Alero

3 Answers

I replaced my radiator on my 2004 with a 2.2 and it seems like the thermostat is not opening. It can not get the air out. It seem to just to over heat and push the coolant out. Randy


REPLACE THERMOSTAT IF TOP COOLANT COOLANT HOSE GOING TO RADIATOR IS HOT TO TOUCH THERMOSTAT OPEN. TO BLEED COOLANT SYSTEM FIRST YOU NEED TO ADD COOLANT TO THE COOLANT OVER FLOW JUG UNTIL COOLANT LEVEL STOP DROPPING AND STAY AT FULL COLD MARK.WAIT 3 MINUTES IF COOLANT DROPS ADD MORE COOLANT UNTIL COOLANT STAY AT FULL COLD MARK.WITH RADIATOR OVER CAP OFF CRANK ENGINE FOR MINUTE WATCH COOLANT LEVEL AT OVERFLOW JUG.IF COOLANT DROPS ADD MORE COOLANT IN THE OVERFLOW JUG.WHEN COOLANT LEVEL STOP DROPPING IN OVERFLOW JUG.SCREW BACK ON THE RADIATOR CAP TO OVERFLOW JUG.WHILE ENGINE IDLING WATCH TEMPERATURE GAUGE WHEN TEMPERATURE START CLIMBING TURN OFF ENGINE WAIT A WHILE KEEP FROM GETTING SCALDED.WHEN COOLANT COOL DOWN SOME. PLACE A LARGE RAG OVER THE COOLANT OVERFLOW JUG OPEN CAP LITTLE AT A TIME UNTIL PRESSURE RELEASED, THEN REMOVE CAP ADD MORE COOLANT IN THE OVERFLOW JUG TO THE FULL COLD MARK.THEN REPEAT THE PROCESS SCREW BACK ON THE COOLANT OVERFLOW RADIATOR PRESSURE CAP.THEN START ENGINE WATCH TEMPERATURE GAUGE WATCH COOLANT TEMPERATURE GAUGE WHEN COOLANT TEMPERATURE START RISING TURN OFF ENGINE AGAIN WAIT UNTIL ENGINE COOL DOWN ENOUGH TO KEEP FROM GETTING SCALDED TAKE PLACE LARGE RAG OVER RADIATOR CAP WHICH IS THE COOLANT OVERFLOW JUG CAP OPEN CAP LITTLE AT A TIME UNTIL PRESSURE RELEASED ADD COOLANT UNTIL AT FULL COLD MARK. WHEN YOUR COOLANT LEVEL STOP DROPPING.AND TOP RADIATOR HOSE VERY HOT THERMOSTAT OPEN AND AIR IS OUT THE COOLANT SYSTEM. MAKE SURE YOUR COOLANT OVERFLOW JUG HAS COOLANT IN IT,WHEN ENGINE COOL DOWN CHECK COOLANT OVERFLOW JUG KEEP COOLANT LEVEL AT FULL COLD MARK.BECAUSE IF OVERFLOW JUG IS EMPTY THATS A SIGN RADIATOR COOLANT LEVEL LOW.WHEN OVERFLOW JUG EMPTY IT WILL ALLOW AIR GET IN THE COOLANT SYSTEM AND CAUSE CAR TO OVERHEAT.WHEN REPLACING THERMOSTAT ALSO REPLACE THE RADIATOR CAP ON THE COOLANT OVERFLOW JUG.

Aug 09, 2011 | 2004 Oldsmobile Alero

1 Answer

Need to know if i need to bleed the cooling system, after installing the radiator?


ADD COOLANT IN THE COOLANT OVERFLOW JUG UNTIL COOLANT LEVEL STOP DROPPING AND COOLANT LEVEL STAY AT THE FULL COLD MARK.PLACE COOLANT OVERFLOW JUG CAP BACK ON JUG.CRANK VECHICLE UNTIL ENGINE START WARMING UP. STOP ENGINE WAIT FOR A WHILE UNTIL COOLANT COOL DOWN TO KEEP FROM GETTING SCALDED. USE A LARGE RAG OVER THE OVERFLOW JUG CAP OPEN OVERFLOW JUG CAP A LITTLE AT A TIME REMOVE OVERJUG CAP CHECK COOLANT LEVEL ADD MORE. COOLANT IN THE OVERFLOW JUG.THEN START VECHICLE AGAIN.LET ENGINE IDLE UNTIL TOP RADIATOR GET HOT.THEN THERMOSTAT WILL BE OPEN.WHILE ENGINE IDLING WATCH THE TEMPERATURE GAUGE IN VECHICLE IF TEMPERATURE GAUGE START CLIMBING IN THE HOT ZONE.TURN OFF VECHICLE LET IT SET A WHILE THEN USE LARGE RAG REMOVE OVERFLOW JUG CAP.ADD MORE COOLANT, PLACE CAP BACK ON START VECHICLE AGAIN KEEP DOING THIS PROCEDURE UNTIL TEMPERATURE STOP CLIMBING HOT ZONE.AND WHEN COOLANT LEVEL STOP DROPPING IN THE COOLANT OVERFLOW JUG.AIR IS OUT THE SYSTEM, BUT KEEP COOLANT LEVEL IN THE COOLANT OVERFLOW JUG AT THE FULL COLD MARK.DONT OVERFILL.DONT LET COOLANT OVERFLOW JUG RUN DRY IF SO AIR WILL ENTER COOLANT SYSTEM BECAUSE COOLANT LEVEL WILL BE LOW ENGINE WILL START OVERHEATING.

Jul 24, 2011 | 2006 Dodge Grand Caravan

1 Answer

When are are trying to release air pockets to the heater core what and where are the valves. 1999 Chyrler Seabring JXI V6 2.5


You don't need to bleed the coolant systems in 1999. Fill the radiator and fill the overflow to a point mid way between the cold and full lines. Warm up the engine until the fans cycle on and off. Let engine cool down and check level in the overflow. Add as needed and keep a watch for a couple of weeks. Any air in the system will be pushed out of the radiator into the overflow bottle. When the engine cools down it pull coolant from the overflow back into the radiator.

Mar 01, 2011 | 1999 Chrysler Sebring

2 Answers

Heat is not working - coolant was low so filled it.... problem here... heard something about an air pocket


If you dont have an external coolant leak anywhere under your hood that has shown up on your driveway it could be the intake manifold or the headgasket leaking. Also check the thermostate to solve the heat issue.

Jan 05, 2011 | 1998 Pontiac Bonneville

1 Answer

Mazda eunos 1993 30x coolant overflow


The problem may be the radiator cap and sealed so that when the system pressure is passed into the coolant reserve tank is the first thing you have to revisar.Thanks

Apr 23, 2010 | 1993 Mazda MX-3

1 Answer

Coolant light keeps coming on


Check your coolant level in the overflow bottle. Add if needed. The coolant bottle has lines where to add to when engine is cold or hot.

Mar 31, 2010 | 2001 Saturn SL

3 Answers

My low coolant light keeps coming on


The thermostat must be failing. Consider replacing it.

Jan 03, 2010 | 2002 Buick Century

2 Answers

My car turns the light low coolant and when i turn it on it comes like smoke. i put antifreese again. but it keeps showing the ligth low coolant


I dont remember the lumina having a low coolant light.

It does have a low washer fluid light though.

You can see if you coolant overflow bottle is full. If it isnt, fill it to the hot or cold mark on the side.

Fill your windshield fluid too and see if the light goes out.

Good luck and be safe!

Dec 12, 2009 | 1999 Chevrolet Lumina

2 Answers

Its over heats and i put water every one or two days today i notice that a white clear container by the water hose is empty and greasy


Look at the oil on the dipstick. If its milky you have a head gasket issue. Also if you can make it to a smog machine they can sniff the coolant fumes to see if gas is in the coolant. Head Gasket again. Any repair shop has a chemical that can test for gas in the coolant also.

The theory here is if your losing water and none is leaking on the ground its got to be going into the cylinder and getting pushed out the exhaust pipe.

Now if its just overheating you may have a stuck thermostat or clogged radiator or a coolang fan that dlesnt turn on when commanded by the computer.Also if its just overheating and the water lost is going on the ground somewhere then you may not have a head gasket issue.

I just did a head gasket on a Honda because as the engine was warming up the overfill bottle would fill up and overflow. The combustion pressure was leaking into the coolant and pushing the coolant out.

Jul 14, 2009 | 1998 Honda Civic

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