Question about 2000 Dodge Grand Caravan

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When I drive my 2000 dodge caravan, as long as the coolant is full it will not over heat when the ac is on, however the coolant then " disappears" and the vehicle begins to over heat, turn off the ac and the car does not over heat any more...any ideas?

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  • david_davemo Aug 06, 2010

    What do you mean by however the coolant then " disappears"?

  • bryjenkay Aug 06, 2010

    i don't know if it evaporates or runs over from the overflow, but when i get home and the engine cools i check the radiator and the coolant is about a half a gallon low.



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Your air coil in front of the rad may be blocked up with dirt & the rad fins may be also blocked. Pressure wash them thoroughly & make sure your serpentine belt is not too worn & slipping. Check the rad for loose fins or disintegrated fins. If it's not looking good, have the rad replaced or recored. This will more than likely solve your problem. Hope this helps you. Good luck!

Posted on Aug 06, 2010

  • eric r barnes Aug 07, 2010

    In that case it may be two things. The waterpump may be worn out & the impeller is slipping OR you have a head gasket leak. Check the oil dipstick to see if there is any white chalky residue present. This is a sign of antifreeze leaking through the head gasket. Also check the tail pipe by sticking your finger in it & smell the odor of it, If it is sweet pungent odor, this is an antifeeze leak meaning your antifreeze is leaking inside a cylinder. Have a rad pressure test done to determine the exact problem. Again, good luck!


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Posted on Aug 06, 2010

  • bryjenkay Aug 06, 2010

    so now looking at the fan... the fan on the left is missing the blades...i guess this will be my problem huh...?



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SOURCE: Dodge 2000 minivan,water pump leaking

Make sure it's cool, pop the radiator cap, Remove the shield on the passenger side between the tire and front of engine. Relieve the tension on the serp belt,draw yourself a diagram of the pulleys and belt routing in case the sticker is gone on the strut tower, remove the serp belt. Take the bolts out of the pulley on the front of the water pump (3). Remove the lower radiator hose at the front cover to drain the coolant. Remove the 6 mm bolts holding the water pump to the front cover housing. tap on the pump with a rubber hammer. Install a new gasket on the new pump, and a weap hole diverter in the pump (round black about hte size of a quarter), use old one if there's no new one. Install pupm and tighten bolts snug with a 1/4" ratchet. Install pulley and 3 bolts. Install belt, top off radiator with 50/50 mix green coolant. start engine and run to operating temperature,make sure the belt is seated in all of the pulleys and is running true, radiator fans should come on. Shut engine down and let cool overnight. Check level in radiator and overflow bottle, top off as necessary.

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SOURCE: 2000 dodge caravan key will not turn can not

The tumblers in the lock cylinder are stuck and this prevents the key from turning. Spray some lubricant into the cylinder, insert the key in and out numerous times and also hit the end of the key with a rubber hammer while it is in the cylinder and this will help to release the tumblers.

Posted on Dec 27, 2010

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1 Answer

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Most common is the thermostat, simply change and see if it worked. Second , but first before I change the thermostat make sure your coolant is full and if it is not too dirty. Also make sure the water pump is in working order. Are you getting heat? If so the pump probally is fine as it is circulating water to the heater core. When running the vehicle does it have a thick white cloud of smoke and does it smell like antifreeze, also check to see if there is water draining from the tail pipe. These are signs of a blown head gasket. Is the vehicle truly overheating or is it the sending temp unit? This can give a faulse reading to make it seem the vehicle is over heating if the sending unit is bad.

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