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2002 dodge caravan radiator steams but temp gauge reads normal only blows heat sometimes sounds like the water is boiling in the heater core please make some sense of this

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If the radiator has steam coming of off it you have a hole in it some where have it pressure checked. Also what you are hearing in the heater core is in fact air that has got in the core due to the hole in radiator it will sound that way have a good mech check the system out and burp the heater coil a mech will no what I mean. FYI that means getting all the air out of the cooling system.

Posted on Nov 28, 2013

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Posted on Jan 02, 2017

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motor1258
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SOURCE: 2002 caravan, heater problems

That was a common complaint a few years back, due to the fact that the heater core is a little too much higher than the engine, which requires that extra push it gets when engine RPM's increase. One thing I did do on my Caravan was remove my hoses to the heater core, and use a small external pump with hoses to circulate C.L.R. through my core for a while, then let it sit with CLR in the core overnight.Next day I circulated it through again, both ways by reversing hoses, and then re-attached hoses, bled air out of system, and notice quite an improvement in heat at idle. Once cleaned out, the heater core allowed coolant flow through it better at idle. If your stumped by explanation, take it to an automotive shop, or a Rad shop, and get a quote on flushing that core out for you. I recommend the CLR, but it might be too time consuming for you , but a flush will probably show some noticeable improvement.

Posted on Nov 23, 2008

  • 1 Answer

SOURCE: 96 audi a4 heater blows cold air

you have air in the system!! you have to unbolt the filler tank and lift it 5 inch higer first. then loose the right hose on the heater core( this hose have and hole to bleed the system) and then put antifreeze until the antifreeze will go out of the hole then re install the hose to the heater core, then ajust the level correcty
have fun
jean-martin

Posted on Feb 05, 2009

ifixgms
  • 64 Answers

SOURCE: Heater blows cold air.

heater cores clog in taurus. way to know is this--engine fully hot--heat on reach down to the fire wall and grab hold of one of the heater hoses where it hooks to the core--one should be real hard to keep hold of because its that hot. If the other is close to the same the core is not clogged. But if the other is cold to the touch its clogged. You can remove the hoses and shoot garden hose water in one side or the other and break it loose usually

Posted on Apr 07, 2009

gordanddar
  • 477 Answers

SOURCE: temp guage showing hot, not getting any heat for 1992 Mercury Cap

If the hoses to and from the heater core are hot , and you say the heater core is hot , then the only answer is that the air duct that flows into or out of the heater core plenum ( housing ) is not opening.
Heater control on dash borad inoperative.
Not sure about 92 capri , some cars have a cable linkage , some work on vacume motors.
Try to find a haynes manual for your car , they will walk you through almost every step of anything you may ever want to do to your car.

You seem to know what you are doing , but I gotta ask ........the heater core you felt was up behind the dash inside the passenger compartment of the car right ?

Posted on May 10, 2009

  • 1 Answer

SOURCE: I have a 2001 1500 dodge ram it has no heat

are heater inlet outlet mix valves standard for all dodge heater cores. I have 2001 dodge cummings blows warm air not hot when gauge is 195 degrees would there be a mix valve under the dash because it is not inline outside the wall

Posted on Nov 19, 2009

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Smoke coming out of the vents in my 2001 dodge caravan only when accelerating


That to me sounds more like steam, as you accelerate the engine it causes more pressure in the cooling system. The heater core is essentially a small radiator linked in to the cooling system, that the warm engine water circulates through and creates the heat for the interior as a fan blows air across it.

I could be wrong on this, but to me it sounds like the heater core (Small radiator) has sprung a leak.

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My 1999 dodge caravan is still overheating. I have already replaced the thermostat and the water pump, also there is no heat. please help me someone!


Hi there.
Well you can either have a problem with either radiator outer {dust/dirt in outer core of radiator or clogged up inside were water goes, or soft hoses,blowen head gasket plus a few others ,but first go to garage to were you blow up your tyres and use the air hose and blow out the radiator core where the air goes in, 2 drain out radiator water and then refill with water at 1 ltr at a time and then check your info car book and find how much water the radiator takes ,if it dosent take all the ltrs then the radiator is blocked inside.
if engine runs rough missing etc then get your Head gasket checked out.
When you say no heat is that with heat on gauge or no heat from heater, as it could be heater blockage same as radiator core. So let me know how you get on.

Feb 16, 2015 | 1999 Dodge Caravan

1 Answer

I have a 2001 Dodge Grand Caravan with the 3.3l flex fuel v6, have replaced the following, water pump, radiator, radiator cap, thermostat, antifreeze. I can get good heat if the van sits and runs, but...


air in the system .before doing all that .you should have put a dadiator flush in the expansion bottle .then run it for about 20 miles then drain it.you do this to clean out the radiator core of dirt and rust.and it cleans the heater core .then bleed the air out by turning your heater of full .run the engine till water starts to get hot .then refit the cap.

Dec 15, 2013 | 2001 Dodge Grand Caravan

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The temp gauge on my 2008 ram 1500 jumps from normal temp to hot checked engine the temp is fine my heater them puts out cold air and I have no heat if I shut heater off and wait a few minutes temp gauge...


It probably low on coolant. The heater will blow cold when there is not enough water (coolant) to keep the heater core full. Check the radiator (not the overflow reservoir) when it's cool.

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The temp gauge reads correctly for a while then it starts going from cool to hot faster the water can change temp. I have changed the sensor


try the thermostat, located on the top radiator hose. top side of engine. also does it steam?? does it lose water but no leak, does the heat blow hot? if your heat isnt hot and it steams and loses water you may have a cracked head or head gasket. if you have heat, doesnt lose water and doesnt steam it may also be your water pump. most pumps will leak visibly from the weep hole when running

Aug 02, 2011 | 1999 Dodge Caravan

1 Answer

Have a 94 Dodge grand caravan and it blows out straight cold air...temp gauge reads fine...What could it be?


Start with having the heater core flushed and also make sure the valve that allows coolant to flow through the heater core is opening and closing correctly when switching from heat to A/C. Please rate this answer, thanks.

Feb 05, 2011 | 1994 Dodge Grand Caravan

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2007 grand caravan heat takes about 10 minutes plus to get warm-is this normal? It actually blows cool air for that long, but eventually blows hot air. Replacing the thermostat which might have been...


sounds like you have a actuator problem or the heater core may be stoped up check and make sure actuator is moving if not replace

make sure both heater core hoses are hot to touch at operating temp if both are not hot replace heater core

and of course check your coolant/antifreeze and insure it is full no water no heat

Jan 15, 2010 | 2002 Dodge Grand Caravan

1 Answer

Engine overheats when heater pipes connected


I think you could be right about there being air trapped in the system.
Or the heater core(radiator) is plugged.
Either way you need a pressurized radiator coolant pump to put the coolant in without air being trapped.
Although,i have seen it done by jacking the vehicle up high enough that the radiator was now higher than the heater core level, and then the coolant was put in.
But this is dangerous to try.

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