Question about 1997 Dodge Grand Caravan

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2002 dodge caravan sport overheated. It has a new radiator and hoses; we changed the thermostat and replaced the relay and pigtail for the cooling fans after it overheated but we still have the overheating problem and now there is no heat. There isn't any white smoke from exhaust, but the temperature gauge still shows the engine is overheating, but the engine is not hot, van started from sitting overnight and about 20 minutes later the gauge jumps to the red, but the radiator cap is not hot. radiator is full of 50/50 antifreeze, not seeing any loss of anti-freeze. There was heat before the engine overheated but now just cold air blows out. Blower motor and relay were changed too. I have read it could be the head gasket, but wouldn't there be white smoke from exhaust? There isn't any noticeable exhaust issues. Also read that it could be the temperature sensor, is that possible and would that show up on a computer readout that Autozone can do for free? Thank you for any help.

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Double check the thermostat and make sure the water pump is doing its job. To check the thermostat, simply take it out and reassemble the housing with out the unit. Run the engine and hopefully it will get warm to hot. If not check the pump.

Posted on Oct 16, 2013

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Posted on Jan 02, 2017

  • 18 Answers

SOURCE: overheating 97 dodge caravan sport

i had the same problem, i dont remember the name of the piece but its mounted right in between the driver side headlight and the radiator. its a relay that turns the fans on when the car gets hot. its mounted on the body of the car. there should be wires leading from the radiator to the piece im talking about.... good luck I also paid about 35 dollars for the piece

Posted on Apr 29, 2009

Nomodo4u
  • 863 Answers

SOURCE: Dodge 2002 Grand Caravan V6 3.3 engine overheating/no cabin heat.

Replace the bad radiator hose first.  Second- get you special formulated anti-freeze dye from the auto store and pour it into the radiator.  Third- make sure you got all the air pockets out of your system, cause the coolant system won't work with air pockets in it.  Fourth- Check for leaks by looking for the colored dye.  If it's not the radiator hose, then could possibly be a pin hole in your radiator.  Would suggest replacing all the radiator hoses at the same time while you got the coolant system disconnected, cause you don't want to have to come back and replace another hose in a few months.

Posted on Nov 06, 2009

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remove the top hose were it attach's to the thermostat housing and the remove the thermostat housing and lift out the thermostat and replace with the new one making sure the spring on the thermostat is facing the engine replace the thermostat housing and top radiator hose and remove the bleeder screw from the top of the thermostat housing and fill radiator with new antifreeze. when you see antifreeze coming out the bleeder hole replace the bleeder screw.

The 3.3L v6 also has the thermostat at the front of the cylinder head were the top radiator hose attach's the thermostat housing the procher is the same except for bleeding the radiator, to bleed the cooling system remove the coolant temp. sensor it is located just below the thermostat housing and fill radiator with new antifreeze until the antifreeze starts coming out the coolent tempt sensor hole them reinstall the sensor and top of radiator.........GOOD LUCK

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I have a 1997 dodge grand caravan with a 3.8L I replaced the radiator cooling fan relay switch and fuses but when idling for more than 5 mins. the van starts overheating


Water pump impeller could be bad or thermostat is stuck shut. I would change thermostat first,easy to change, cost under $10.00 Water pump is hard to change in this van, you have to remove right tire, then inside wheel well, then loosen 3 top motor mount bolts which will lower engine so you can get to water pump and tensioner.

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2001 grand caravan overheating. then suddenly cool


Change your thermostat before it sticks closed completely. Sticky thermostat is usually the cause.
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Mar 10, 2010 | 2001 Dodge Caravan

1 Answer

Dodge 2002 Grand Caravan V6 3.3 engine overheating/no cabin heat.


Replace the bad radiator hose first.  Second- get you special formulated anti-freeze dye from the auto store and pour it into the radiator.  Third- make sure you got all the air pockets out of your system, cause the coolant system won't work with air pockets in it.  Fourth- Check for leaks by looking for the colored dye.  If it's not the radiator hose, then could possibly be a pin hole in your radiator.  Would suggest replacing all the radiator hoses at the same time while you got the coolant system disconnected, cause you don't want to have to come back and replace another hose in a few months.

Nov 06, 2009 | 2002 Dodge Grand Caravan

1 Answer

Where is the thermostat located?


  1. Disconnect the negative battery cable.
  2. Place a drain pan under the radiator drain and drain the cooling system to just below the thermostat level. Close the drain.
  3. Remove the upper radiator hose from the thermostat housing, then remove the housing.
  4. Remove the thermostat and discard the gasket. 0900c15280042100.jpgThermostat installation detail—3.0L engine 0900c15280042101.jpgThermostat installation detail—3.3L and 3.8L engines
To install:
  1. Clean the housing mating surfaces.
  2. Dip the new gasket in clean water and place it on the water box surface.
  3. Center the thermostat on the gasket, in the water box. 0900c15280042102.jpgRemove the radiator hose from the waterneck by loosening the hose clamp . . . 0900c15280042103.jpg. . . then loosen and remove the waterneck housing retaining bolts
  4. Make certain the bolt threads are clean. Threaded bolt holes exposed to coolant are subject to corrosion and should be cleaned with a small wire brush or correct size thread-cutting tap. Install the housing, making sure the thermostat is still in the recess, and tighten the retaining bolts to 105 inch lbs. (12 Nm) for 3.0L engine or to 21 ft. lbs. (28 Nm) for 3.3L and 3.8L engines. Reconnect the upper radiator hose and tighten the hose clamp.
  5. Connect the negative battery cable.
  6. Fill and bleed the engine cooling system with a clean 50/50 mixture of ethylene glycol antifreeze and water. 0900c15280042104.jpgLift the waterneck housing off of the lower intake manifold, then . . . 0900c15280042105.jpg. . . remove the thermostat out of its mounting flange
  7. Make sure the radiator is full and start the vehicle

Jan 09, 2009 | 2002 Dodge Caravan

1 Answer

Overheating


i have a 97 dodge caravan sport had same problem and it was a fan relay.

Jun 17, 2008 | 1997 Dodge Caravan

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