Question about 1998 Plymouth Breeze

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I have a 98 Plymouth breeze and doesn't want to blow warm or hot heat and I replaced the thermostat and flushed the heater core and still no heat . What else could it be?

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  • Plymouth Master
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The problem is caused by a part called the air temperature control blend door or the blend door actuator motor (most likely both are the problem).. This is the part that diverts air across the heater core or the AC evaporator r mixes the air. To access these parts requires the dash be removed from the car.

Posted on Dec 16, 2016

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Posted on Jan 02, 2017

brainyass
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SOURCE: heater only blows warm air.

The hoses from your heater core should be very hot to the touch. Check the hoses going to the core from the water pump. It should be very hot. The return hose should also be very hot. Now check the hoses going to the core. If they are not the same temp, then your heater control valve is not working correctly or the vacuum is not working. At any rate, locate the vacuum line going to the heater valve. Remove the silver bar on the valve from the plastic plunger arm. You will have heat all the time now if it was only a vacuum problem. You can fix it later when it's warmer out. BTW a 200* thermostat will make your heater even hotter.

Posted on Nov 21, 2008

  • 1118 Answers

SOURCE: 96 Jeep Country-Heater blowing warm; NOT hot

unless you got visable signs of leakage its not heater core, but it could be pluged with sediment. take off both heater hoses and flush it both ways until it runs clear. you can also mix a little baking soda and water and pour in core and let set for a while and then flush.

Posted on Jan 17, 2009

  • 173 Answers

SOURCE: No heat in 98 jimmy. Replaced water pump,

Possibly.. the actuators which operate the doors actually have a position signal for reference, but the actual motors inside the actuators dont realize there is a limit and overshoot their limits causing the fine wires inside to rip apart rendering the actuator scrap but this happens when actuators are still plugged in to the connector while being taken off the heater door, and they can and will still move with the key in the off position if the actuator thinks it not in the proper position..thats how they work anyway.hope you had them unplugged untill the last, then this would'nt happen....hope this explaination helped

Posted on Dec 07, 2009

  • 173 Answers

SOURCE: Heat not working on 98 gmc jimmy. Replaced

Flushing the heater core is fairly easy just remove the 2 hoses going to the heater core and use a different hose if you have to and use a garden hose to backflush the blockage out..this may take as much as 5-6 times also check for vacumn lines missing or disconnected or breaks pinched ect... some where in the vicinity of the passenger side under hood by the a/c lines ect. good luck hope this helps

Posted on Dec 07, 2009

  • 290 Answers

SOURCE: No heat/defrost 01 corolla

Sounds like you have air trapped in the heater core when you flushed the heater core. loosen the upper most heater core hose and run the engine untill coolant seeps out. Wait until the coolant has reached running temperature.

Posted on Jan 18, 2010

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Feel the hoses going to heater core, one should be hot and the other warm. If one is cold or both are then heater core is clogged. Make sure heater control valve works and as vacuum to it and or the cable is free.

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Thermostat.? if you haven't? Do it first then try it. While the car is running for a while touch the heater hoses that lead to the firewall. if one is cold and one is hot? You have a blocked Heater core. Follow the hoses back to the engine. Unconnect them both. By using a garden hose flush out the heater core do one side and then reverse by doing the other hose Lots of junk will come out so be care ful. Mistake people make is "Flushing the system" That doesn't mean your flushing the heater core.
Seeing that you have done everything else it could be the thermostat which you didn't list or the heater core being clogged. When you finished installing the thermostat and flushing the heater core out. Replenish the coolant system . If you have a bleeder on the thermostat housing? use it . loosen it and top off the fluid until you see fluid comeout of the bleeder. The system being air bound would cause no heat..

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I have a 2000 plymouth breeze replace thermostat still no heat hoses at heater core are hot wouold resistor be part of the problem


The resistor only controls the lower speeds of the heater electric motor. If you have only the high speed that works, the resistor is bad.

Oct 25, 2010 | 2000 Plymouth Breeze

1 Answer

1998 Plymouth Breeze, heater does not blow warm air


Check your coolant level. Replace your thermostat and flush coolant system. If you bought used and it never has worked, make sure that the heater core has not been bypassed. If it has, it will probably have to be replaced(was probably leaking on previous owner)

Feb 19, 2010 | 1998 Plymouth Breeze

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it could be the cold air blend door or the thermostat is the engine temp up to the middle of the gauge or close to it if so then thermostat is ok if not then go ahead and replace it.

Jan 07, 2010 | 2000 Plymouth Breeze

1 Answer

Bought son 98 Taurus, blasts cold a/c air and defroster air blows, but it won't blow warm air-no heater. can't see out of windshield with the morning sun.Husband flushed antifreeze and changed thermostat....


feel the two hoses going into and out of the heater core. they both should be hot. if one is cold the heater core is likely plugged. you can try flushing it out to see if you can restore flow to the heater core. if they are both hot the thermostat may be sticking open tho you should have a limited amount of heat. also confirm that the vents are operating as they should be.

robert

Sep 15, 2009 | 1998 Ford Taurus

1 Answer

96 Jeep Country-Heater blowing warm; NOT hot


unless you got visable signs of leakage its not heater core, but it could be pluged with sediment. take off both heater hoses and flush it both ways until it runs clear. you can also mix a little baking soda and water and pour in core and let set for a while and then flush.

Jan 11, 2009 | 1996 Jeep Cherokee Country

1 Answer

Heater only blows warm air.


The hoses from your heater core should be very hot to the touch. Check the hoses going to the core from the water pump. It should be very hot. The return hose should also be very hot. Now check the hoses going to the core. If they are not the same temp, then your heater control valve is not working correctly or the vacuum is not working. At any rate, locate the vacuum line going to the heater valve. Remove the silver bar on the valve from the plastic plunger arm. You will have heat all the time now if it was only a vacuum problem. You can fix it later when it's warmer out. BTW a 200* thermostat will make your heater even hotter.

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