Question about Dodge Grand Caravan

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Radiator / engine cooling problem

I am losing coolant. No noticeable leaks. I was topping it off the other day and wanted to watch for flow. I looked over and the coolant was pushing up over the radiator fill neck and on to the ground. I continued to watch as it went down and then pushed up again pushing more coolant out on to the ground. Is this normal? If not, how do I stop it?

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  • Dodge Expert
  • 239 Answers

This sounds like you either have alot of air in your system or you head gasket is bad. Get a fluid test and see if here are hydrocarbons present in your coolant. I would say bad head gasket.

Posted on Nov 05, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

stormbrewin
  • 426 Answers

SOURCE: Coolant filling up overflow bottle

You may need to ask AAA to put a radiator pressure tester on the resevoir bottle and pump it up to operating pressure(Pressure cap rating) and see if it over pressurises while it is running at operating temp,rev engine up and down and watch what the testers pressure readings do,it should move up and down in sync with the water pump.If the pressure keeps building i would have to believe that combustion chamber gases are over pressurising your cooling system.Also test the pressure cap is functioning within factory specs.

Posted on Oct 30, 2008

  • 157 Answers

SOURCE: 2.3l ranger keeps overheating, been through two radiators already.

Hello Ranger Joe, eight months and two radiators is very uncommon. Question, Have you visually confirmed the leak in the radiators or is the leak near the hose connections? Replacing the radiator, cap, water pump, & the thermostat leaves only two others, the hoses and the engine block/heads. Far fitched will be something or somebody poking holes in the radiator.

Posted on Nov 07, 2008

  • 1 Answer

SOURCE: overheating

It could be your head gasket.

Posted on Feb 12, 2009

  • 85 Answers

SOURCE: coolant in coolant reservoir did not fill low level in radiator

you must drain air out of system
so when engine is warmed up, just unscrew slightly the thermo time switch which is the highest sensor and unit in cooling system besides the reservoir, until alittle air releases then when antifreeze starts coming out then retighten to specs. BE VERY CAREFUL !!!! LOOSEN VERY SLOWLY AND NOT COMPLETELY REMOVE FOR THIS CAN CAUSE BURNS. MIGHT WANT TO USE A RAG AROUND SENSOR. If this doesnt solve it then make sure you have the correct rad. cap. Also that the filling hose is not clogged as well as the little port on radiator.

Posted on Feb 19, 2009

goalie39
  • 469 Answers

SOURCE: 98 Acura CL oil in coolant/radiator

Check the oil, is the oil milky on the dipstick?
Check the Transmission Fliud level, Low?

If it is engine oil it could be a head gasket, if it is transmission oil then the cooling lines in the lower tank of the radiator may be leaking.

Posted on Apr 15, 2009

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2006 jeep grand Cherokee limited if the radiator overflow jug is empty will it cause the transmission temp light to come on


I would say it is possible an overheated engine which is not coolling the transmission can trigger a lot of lights. Many transmissons are heated and coolled by a line which goes to the radiator of the engine cooling system.

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My 94 Chevy caprice is overheating why?!


Some possible causes of the high coolant temperature...........

1. The radiator fans are not kicking in when the temp rises.

2. The water pump may be working but if the impeller blades have corroded badly the performance of the water pump will be very poor. (Some water pumps used by some manufacturers have plastic impeller blades and over time these blades will break apart).

3. The thermostat is stuck partly open and is retarding 100% coolant flow through the radiator. The thermostat needs to be fully open for maximum coolant flow from the engine to the radiator.

4. You have a partial blockage in the cooling system which is retarding coolant flow. This may be in the radiator or in the cooling passages in the engine.

5. Check if you have bubbles in the radiator. Wait for the engine to cool and start the engine. Take off the cap and wait for the thermostat to open and for the hot water to begin flowing through the top hose into the radiator. Then watch for any bubbles appearing in the coolant. If there are bubbles continuously it is an indication of a combustion leak into the cooling system and that will cause overheating until the problem is fixed. In that event have a leak down test carried out on each cylinder to confirm that the combustion is leaking into the cooling system..

Have the problem, whatever the cause, investigated and fixed. Allowing the engine to run hot will cause very expensive engine damage many times what it will cost you to fix the cooling issue you have now.

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your problem in cylinder head gasket. i guess better goes to technician to replace it.

Oct 19, 2013 | Dodge Grand Caravan Cars & Trucks

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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

1 Answer

I have a 2003 Mitsubishi Diamante. It seems that when I am driving at higher speeds the engine runs a little warm. I am not overhearting but want to address issue before a problem. What could be causing...


There are several things to check:
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  • Leaking radiator hose; a small leak under pressure would cause you to lose coolant
  • Leaking radiator line (located on the bottom of the radiator
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May 01, 2011 | 2003 Mitsubishi Diamante

1 Answer

My car overheated yesterday. I pulled over and let it cool down. I opened the hood of my car and there was lot's of steam. It cooled down and I drove it home. I just started it to see what's wrong. I...


thats due to low or no coolant, you shouldnt drive this overheating engine damage will occur,the first thing is to fill the radiator up, and look around for any leaks, if no leaks are seen, then start engine and allow it to warm up, leave cap off at first to top off coolant, after a few minutes install cap and let it run, keep an eye on the temp gauge and also watch for leaks. this problem is due to a coolant leak,maybe a hose is bad or it was low on coolant or you have a bad thermostat, good day.

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1 Answer

Hello, I am the owner of a 2005 jaguar x-type. Upon start up when driving away I notice a "gurgling" sound coming from the engine in the location of the glove box.


Sounds like air in cooling system. Coolant comes through to back of glove box area for your heat supply.
Have you noticed less available heat than normal?

Check the coolant level in radiator, not just the top up bottle. DO THIS WHEN ENGINE IS COLD as hot system is under pressure.

Possibility of head gasket leak suppling gases to coolant system. IF so may be producing some persistant heavy white steamy exhaust, though not necessarily.

Topping up coolant will (should) make noise go away at least temporarily. You should look to see if any obvious leaks or wet spots at hose clamps and heater hose connections.

When engine is cold, open Radiator cap, look down (flash light helps?) to see fluid level, should be full to top.
If not, top up with correct coolant mix, leaving cap off, start motor and allow to idle till warm. If level drops top off some more. Watch the fluid as it flows past cap opening. a few bubbles for a few mins may be normal, but continous stream of bubbles indicate head gasket leak. Turn on the heat in car to full, (not the fan, just heat level) gently rev the engine and top up fluid at same time, (2 people) replace cap. Done. If there are no apparent problems.

If noise returns or does not go away, you'll need a professional inspection.

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How to change the radiator


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