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Blower for heat keeps going out

Turn switch for heat but heater wont come on unless i keep pushin levels up and down then the blower starts blowing

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  • Cars & Trucks Master
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Depending on the make model and year, it could be a faulty control switch on the dash.

Posted on Dec 12, 2012

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

mrgreenz
  • 962 Answers

SOURCE: Heater blower won't shut off after the car has been turn off.

Check the resisitor in between the blower and the wiring under your dash.it is a small gadget. Not an electronic resistor as you would see in TV or other electronics.

Posted on Dec 17, 2008

picatudo
  • 239 Answers

SOURCE: 2001 gmc jimmy defroster-heater blower will not direct heat

you have a vacuum leak

Posted on Jan 07, 2009

philriden
  • 146 Answers

SOURCE: replaced heater blower and relay. still wont blow on 89 park aven

Check the blower motor resistor. It could have a broken connection in it.

Posted on Jan 13, 2009

rsst
  • 175 Answers

SOURCE: Blower on heater works sometimes, sometimes it

Sounds like the blower resistor. It will either be located in the engine compartment outside the motor or inside the vehicle inside the blower motor cover. It could also as well be selector switch

Posted on Dec 08, 2009

  • 57 Answers

SOURCE: my 2002 ford courier heater wont blow hot air the

Hello. This is a common problem on fiesta's and KA's so I presume it could be the same on the courier. There is a valve which 2 pipes goes in and 2 come out behind. The vave is stuck shut! They are right next to each other and about 1 inch wide. If you look at the bulkhead you will see these 2 pipes and they lead into the valve inbetween the wipers. Two clips hold the pipe on and two other clips behind the valve. These will have to be removed and the valve taken off. You will loose a small amount of water when removing the pipes. Just make sure the engine is cold so you don't scold yourself. The valve is quite cheap approx £30 and will take about 30 mins to do

Posted on Dec 21, 2010

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1 Answer

Fan stays on ,wont let the Radiator get hot .so i m not getting any heat


Hi Fred.

I'm not totally sure I understand your question, but I'll take a shot. Are you saying that the engine fan stays on all the time for your car, keeping the radiator cool, and so you're not able to get any heat in the cabin air? Or possibly that the cabin fan is on all the time and you can't get any heat because it's keeping the radiator cool.

unless there is something very odd about your car (or you're living at the south pole), your engine coolant will be plenty warm within a few minutes of starting. If you are doubtful, drive the car for 5 to 10 minutes, stop, turn off the motor, pop the hood, and carefully move your hand close to the radiator. The blower fan helps transfer heat, but that's to move the coolant temp down probably into the 150-200F range.

if you're not getting any cabin heat, I'd have stronger suspicion about the heater core for your air system. In the majority of vehicles, there is a loop of coolant that comes off the back of the engine block, through the fire wall, and up to a U-Bend of pipe. When the heater is off, the coolant is just re-directed back to the engine. As you turn the knob or lever for cabin heat, it'll turn a switching valve to shunt the hot coolant into a heat exchanger/mini-radiator that the cabin air blows past. This system being a mini-radiator is why highways with long uphill grades will advise motorists to turn on their heater full heat, highest fan, when climbing in the summer. it's an additional way to keep the engine from overheating, even if it sucks for people in the vehicle.

Depending on the car, it can be either easy or really involved diagnosing or repairing the heat exchanger. if you go this route, you'll want to make sure that the coolant is circulated through the core thoroughly and that the coolant-system is de-bubbled.

Good Luck!
D

Nov 24, 2015 | Cars & Trucks

2 Answers

Mitsubishi L200 Fan Heater blower Fuse keeps blowing


Why does the heater fuse keep blowing
This place offers a few suggestions, like fan motor old and pulling too much current, or fan switch, ect

Nov 23, 2015 | Mitsubishi Cars & Trucks

1 Answer

When i turn off my heater or AC the fan keeps blowing until I turn off the car


The fan blower will work independently of the ac switch but the ac will not work unless the blower fan is switched on. It is possible that you have been using the one switch to control both with out realising what is going on.

Sep 29, 2013 | 2006 Hyundai Tiburon

1 Answer

Engine is over heating unless you turn on defroster, then the fans come on , however interior temp switch , appears not to be working, because it continues to blow cold air into the vehicle,


May just be low coolant level. Remove rad cap, or if none, coolant return bottle cap, and start engine and run heater while doing this. Now pay attention to coolant level and add as needed to top up the system. Let it run with cap off until rad fan comes on and off, 2 or 3 times and keep adding coolant if level goes down. Keep an eye on temperature gauge while doing this. It almost sounds like your coolant got low, or is low, and your heater has an airlock. Once coolant circulates back through heater and level is correct, see what happens.

Nov 03, 2010 | 2000 Ford Taurus

1 Answer

Blower on heater works sometimes, sometimes it doesnt. Can be driving down the road and it suddenly starts blowing. What could be the problem? A short in the wiring? Blower motor going out? Blower level...


Sounds like the blower resistor. It will either be located in the engine compartment outside the motor or inside the vehicle inside the blower motor cover. It could also as well be selector switch

Dec 08, 2009 | 1995 GMC Jimmy

2 Answers

1998 for taurus heater wont blow hot air only cold .was driving down the road I TURNED THE HEATER OFF FOR A COUPLE MINUTES WHEN I TURNED IT BACK ON IT WOULD ONLY BLOW COLD AIR.IT IS ELECTRONIC SWITCH'S.THE...


you need to check the blend door in the heater box it maybe broken or stuck.the blend door switches between the heater core and ac evaporator to provide a mix of temperature

Oct 18, 2009 | 1998 Ford Taurus

1 Answer

Heater only blows cold air but hoses are hot


Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.
If persistent boil ups/over attention must made in the cylinder head
or gasket area, or possibly water pump?
Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K

Feb 28, 2009 | 1996 Mercury Grand Marquis

2 Answers

Nissan Altima no cool air blowing or hot air blowing


Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.

Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K

Feb 24, 2009 | 2002 Nissan Altima

1 Answer

My 2002 silverado heat wont shut off


replace the blower motor speed control resistor

Feb 20, 2009 | 2002 Chevrolet Silverado

1 Answer

1991 Chev Beretta blows cold air


Hi!
Looking at your description I feel a Air lock scenario?
Have you tried a system bleed?
Park vehicle on level ground, when cold remove coolant filler cap, start engine leave to idle, turn heater to max and blower full. Wait for engine to reach operating temp, keep clear of coolant filler, listen as hopefully gurgling then a boil over will occur, top up with very warm coolant wait as it may boil over again.
Check for heat inside vehicle, if hot replace cap but keep eye on temp as air lock may have just moved out of heater matrix/core so boil up may happen again.
If the bottom hose continues to constrict and heat inside car then possible head gasket issues.
Good luck! hope I sorted it for you? if so press the Blue button please! for my FREE effort's I Thank You!
Paul 'W' U.K.

Feb 01, 2009 | 1991 Chevrolet Beretta

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