Question about 1986 Jeep Comanche

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Heater not putting out heat. Want to know how to remove the heater coil.

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I suggest before you go replacing the heater core to try and flush out the old ,in most cases they get plugged up and can easily be cleaned out. find the heater core hoses going into the cab ,usually behind the motor on the passenger side at the firewall.disconnect both of them and connect a garden hose with good water pressure to any one of the heater core ends then with the high water pressure it should push out all the debris switch connections back and forth until clean water runs through it reconnect engine hoses to it and heat should be flowing. good luck hope this helps you

Posted on Nov 13, 2010

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Posted on Jan 02, 2017

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Why does radiator fan work when air is on but not when heater is on?


Have you waited long enough?
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Jan 03, 2013 | 1992 Ford Taurus

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Put. In a heat coil lincoin. Navigator 1998


the heater core is located behind your dashboard on the fire wall. you will have to remove the dashboard and components blocking you from getting to the heater core it is a very aggravating job but can be done with patience and will save you alot of money to do it your self

Nov 18, 2011 | Lincoln Cars & Trucks

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Believe my heater coil went out. then i blew a head gasket, is this related. how often do the heater coils go out.. heard that fords heater coils go out.. needed to know if its worth my time to fix.


do you mean heater core if so it can be a chore to replace dash board and air housing disassembled you can buy a electric heater that will plug into lighter socket if the heater is leaking coolant the head gaskets can cause damage if motor over heats

plz leave me a comment

reply if you have any more questions

Jan 19, 2011 | 2000 Ford Taurus

1 Answer

No heat,replaced heater coil but no heat when switch on to the heat,fan comes on but no heat


No heat = no motion. If there is no heat in your car there is no molecular motion (no molecular bond) and the world as you know it will literally fall apart. Won't even be elements left, just random neutrons being pounded by protons and electrons colliding at an alarming rate.
Assuming you mean that your A/C works fine and the only problem is the air being blown out is not warm as it should be on heat, could be a couple of things.
Valve not sending coolant to heater core. To check this just warm the car up, turn on the heater, and pop the hood. Find where the heater core hoses connect at the firewall. Feel each side (in and out), they should both be very warm. If not very warm, your heater core is not getting any heated water to share with you in the cabin. Follow the hoses from the firewall to wherever they go. If there is a device connected inline, feel both sides of it. If the 'other' side is hot, the valve isn't turning on. This is what you hope the problem is, cheap and easy.
Blend door not operating properly. This is the flapper door within your heater/AC box that puts air through the heater core or the AC core. Checking or fixing it means removing the dash, which isn't any fun. Hope it's the valve above.


good luck

Dec 15, 2010 | 1997 Mercury Grand Marquis

1 Answer

Car heat takes 10 to 15 minutes on a 2005 dodge


could be clogged up heater core or the heating helper element ..if you look for the heater air box you should see a 3 wire plug with i believe its 2 screws on it remove it and start the car and have someone hold it {not the coil wire ends and turn on the heat it should glow red hot this is the heater coil helper you may also have insufficient antifreeze remove radiator cap and check fluid levels also while your there feel the top and bottom hose to see if they both get hot and that you feel water in them but 1st ensure the radiator is full if just the top hose going into the heater-core to the firewall is hot and the bottom one is cold you should have a radiator flush to dislodge the Gunk buildup in the heater core .

Dec 07, 2009 | 2005 Dodge Grand Caravan

1 Answer

I am getting in heat... We know it now the heating core... Do you have any idea what it is


If it isn't the heater coil, then the only things left are the heater fan fuse or the heater fan motor itself. Check your fuses. If you don't have a fuse diagram, start with highest amp fuses first. The heater motor uses a lot of juice and will probably be on at least a 10 amp fuse. If all the fuses are good then you probably need a new heater fan motor. They usually mount to the fire wall from the engine compartment and are pretty easy to change. Not at all like the heater coil.

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2 Answers

Pull to a stop light and the heater starts blowing cool air


sounds like you need to either...add anti-freeze solution to your radiator...or worse case...coolant pump is starting to fail or heater coil is clogged..if coil is suspected to be clogged....do a radiator flush...reverse and foward flush the coil only...hope this helps

Mar 12, 2009 | 2002 Chrysler Sebring

2 Answers

Heat won't blow when idle.


hmmm tricky, at a long shot it could be the heater control switch in the engine bay, u should be able to see this working if you get someone to sit in the cab and move the temp switch from cool to heat over and over. if this is working ok try bleeding or flushing your heater pipes. considering your getting heat when your moving but not at idle im leaning more to the bleed side of it, you could have an airlock. this would be overcome when the engine is at higher revs therefore pumping a higher volume of water and also at a faster rate through you heater lines temporarily fixing it

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1 Answer

My 97 grand am


When the heater coil was installed a wire has gotten a bare spot and is shorting out.You should check around the heater coil.

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