Question about Dodge Grand Caravan

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1997 Dodge Grand Caravan heating/cooling issue. Does not heat properly in winter. In summer- only with A/C on tries to overheat. Replaced: Thermostat, Radiator (blew last yr), hoses relay and relay wiring. Noticed: Thermostat opens and radiator fan comes on properly. Temp continues to rise then Aux. fan comes on. Heat: only on idle like core is bad but no other core symptoms like foggy or smell. Been thinking a sensor, but the heating issue has me thrown off.

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  • 455 Answers

Mine did this as well, turned out to be a blown head gasket leaking into the cooling system.

Posted on Jun 11, 2017

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Posted on Jan 02, 2017

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SOURCE: 98 dodge dakota slt 318. no heat, low operating temp

First thing first, turn off the engine wait for 15 - 20 mints, open the radiator cap and fill it up to the top then start the engine and see if it needs more water adn add as needed, then wait till you ca see the water circulating in the radiator now instead of corculating if it starts boiling out shut the engine replace the thermostat and do the whole thing again.

unless there is water in the engine the gauge will not be able to show the actual temp of the engine, so always malke sure you have water / antifreeze

Posted on Nov 15, 2008

  • 7353 Answers

SOURCE: 2002 dodge 1500 Changed radiator, thermostat, and hoses. No heat

Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.

Posted on Nov 19, 2009

dttech
  • 4803 Answers

SOURCE: Heat troubles..92 dodge caravan 3.3L..new

If it is fogging your windows, you have a leaking heater core. Dash removal is required to fix it.

Posted on Jan 11, 2011

Testimonial: "great advice,,but I am not losing antifreeze from my cooling system,"

  • 878 Answers

SOURCE: when it was winter i

replace your thermostat

Posted on Apr 22, 2011

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1998 Dodge 3.3ltr grand caravan overheats.I have repaced water pump,Thermostat,Had cracked head and replaced both of them with new ones,Replaces fans,replaced fan relay,All hoses,Radiator.When i start...


You would need to figure out if it is a cooling problem or something producing extra heat in the engine.
Is the radiator fan pulling enough air thru the condenser and radiator ?
Is the fan coming on and also when the ac is on and when the engine reaches 220 degrees ?
Is it possible the exhaust has a restriction somewhere ?

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1 Answer

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Have you topped off and bled the air out of the cooling system? Start there. You need a new thermostat and its possible the water pump is failing as well. Your cooling system may need to be flushed. Its also possible that your radiator needs to be replaced. Whatever you do, be sure that you don't drive the van until you've figured out what's going on and have repaired it. These engines are prone to head and head gasket problems (which may also be your issue) but if you catch it early enough and don't overheat severely, you can avoid that too. If you give me some more history I can try to help narrow the problem and come up with a plan of attack. Please let me know how you make out! Thanks and good luck!

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1 Answer

My Dodge 2005 Ram overheats on hot days while running the AC. If I turn the heater on then it cools down. I need to know if this is a thermostat problem or if something else.


I see your post was a while ago. I hope this helps you or anyone ells having Dodge over heating issues.

I have a 2002 Dodge Ram 1500 and a 2005 Dodge Grand Caravan. I also owned a 2001 Dodge Grand Caravan. ALL of them had thermostat issues. When you replace the thermostat make certain you get the proper heat rating. If it is rated tool low, then the check engine light will trigger the code that the engine is not heating up fast enough. I also recommend going with a 'fail-safe' thermostat. These thermostats fail OPEN rather than closed. My 2002 RAM factory thermostat failed closed, built up pressure, then blew half the water out from under the radiator cap. This happened in less than 35k miles. The dealer replaced it. After a couple of years it failed again. Make sure you have 50/50 mix of anti freeze to water. This raises the boiling point of the water, makes it more efficient for cooling the engine, treats the water so it does not corrode and scale up the cooling system and helps keep the liquid from boiling off there by reducing the volume of fluid in the cooling system. Also, BOTH my 02 RAM and 05 caravan developed a leak in their radiators. They were slow leaks and I did not notice it until I did some standard checks and found the coolant was low, Most shops can run a pressure test for less than $40 to let you know if your radiator is leaking.

You should also make sure that your AC cooling fans is running. There are fuses and solenoids in the fuse box that can sometimes go out. When you AC is on this fans will turn on. If not, it could create a lot of extra heat.

Shawn

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1 Answer

My 2002 Dodge Grand Caravan has started overheating only in the winter over the past three years. We have since replaced the radiator cap, a heating hose in the back of the vehicle, and the radiator. The...


You do not mention if you have chanced the thermostat or not. The thermostat is what controls the engine temperature. I have seen people replace the thermostat two or three times before they got a good one that worked correctly.With any luck the first one you put in will fix the problem.

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The wire on the back of the control is most likely broken, I had the opposite (drivers side allways cold) I dissconnected the solid light green wire and now have hot air all the time, I disconnect it in the summer for cool air, the part is very expensive, $70.00 at a salvage yard!

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ENSURE THE AIR PRESSURE IN ALL 4 TIRES ARE THE SAME. CHRYSLER UNWITTINGLY HAS A TPMS (Tire Pressure Monitor System) by having an ABS light.
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