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Heat blower heating turns on but dies after a few mintues not really sure what is causing it i have tried nearly everthing any tips or hint to what may be causing it

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Where do i find the heater contol valve on a 1998 mountaineer?


The heat control valve if you stand in front of the vehicle facing it. Is on the left hand side/ passenger side near / very close to the firewall. It's to the right/ towards the driver's side of the blower motor. Before you remove it make sure it works by having someone turn on the heat while you watch it open and close. If it does not open or close check your vaccum line. The vacuum line is a grayish color mostly or may be black in color. If it works don't remove it, replace the heater core or flush your coolant system out. You can also flush out the heater core with compressed air or a water hose. To flush out the heater remove both top and bottom hoses and attach a receive and return hose. You can use CLR to help remove the slug built up in it. Let it seat in the heater core after removing any access or trace of coolant. Remove the CLR after about 10 mintues with high pressure water until it is clear. Replace connections of hoses to the engine and refill any anti freeze that is lost

Jan 09, 2015 | 1998 Mercury Mountaineer

1 Answer

When I turn on my heat or air, nothing happens. There is a slight hint of heat or AC coming out of the vents when I have it set at 4. It will occasionally work, if I hit a bump just right, and it kicks...


If I'm reading this correctly- your blower isnt working? the fan doesn't blow? If the blower comes on over hard bumps, probably the blower motor is bad. More common is blower resistor, but try to find motor & bang on it while switched on...if it comes on, the motor is bad.

Sep 15, 2013 | 2004 Dodge Stratus

1 Answer

The heat won't blow out in my 90 bonneville. The blower works fine and tried checking the fuse box, however not sure which fuse is for the blower. Please help out:)


So what you really mean is that there is NO heat but the blower is working RIGHT? in that case you need to replace the thermostat and make sure you blead all the air out of the system.

Feb 27, 2011 | 1990 Pontiac Bonneville

1 Answer

1996 Ford Thunderbird LX - AC/Heating A few months back I had my AC recharged (At the time my heating still worked) and it worked fine for awhile, but about a month after that I would turn the defrost on...


hi ,look under your dash near the blower and find a 4 or 5 wire plug going in near the blower,unplug it and remove the screws holding it in place ,pull it out ,it will be about half a cigarette packet in size when youve got it out in your hand ,this is most likely your problem part ,its a heater resistor ,it controls your fan speeds,it should be a white chalky resistor or an alloy heat sink type ,they come in 2 ways as i've stated,phone a ford specialist junkyard or auto wrecker or a new ford dealer and give them the part number it has on it and your thunderbird specs or ID numbers and you should be able to locate a replacement without too much bother .
THANK YOU for using FixYa

Feb 01, 2011 | 1996 Ford Thunderbird LX

2 Answers

No heat


Have you checked the relay for the system. Should be in the under hood fuse block.

Oct 07, 2009 | 2004 Dodge Dakota

1 Answer

No heat in front but back heat is working


could be a blower motor resistor or a faulty blower motor. if no air is coming out of the vents when you turn the switch to on there is a fault in the electrical system somewhere. the rear blower system is pretty much totally separate from the front so therefor rear hvac is working properly. test blower motor resistor and blower motor current and see if its putting out any power also make sure the wires going to the blower motor are hot also.

Mar 04, 2009 | 2002 Dodge Durango

1 Answer

No air movement in heating system


It can be a little bit of a pain, but fairly simple. The blower motor is usually located on the passenger side, under the dash, and with a few pieces of interior parts taken out from underneath, you should be able to access the blower motor. They have three to four bolts holding them up. Of course you have to unplug the electrical, be sure not to rip them out. Suggestion on fixing it, go the the salvage yard and get one. You can cut the wires off the one at the salvage and put them on your battery terminals, being very careful, to see if it works. Then you can just unplug those wires and put your on back home. I do suggest that you clean the new one out, it should be really simple to do. Hope it helps.

Jan 09, 2009 | 1988 Chevrolet Corsica

1 Answer

Heat/AC blower not blowing air


heck the blower fan speed control resistor, it is located near the blower motor, they are cheap to replace and the most common cause of this issue

Nov 24, 2008 | 2002 Pontiac Bonneville

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