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No heat from heater +a/c works OK - 2001 Chevrolet Blazer

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Several answers for that. Low in water.. air trapped in system. Thermostat may be bad.

Posted on Dec 10, 2009

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2008 jeep liberty.has no heat,blower works, dealer changed water pump,checked heater core flushed lines.they say need cylinders/gasket heads redone replaced a dead battery3wks ago started after that


if cylinder head gasket blown --can have coolant being burnt and cause low fluid levels low or no fluid =no heat as well as overheating and can eventually blow the engine

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Check continuity on the seat heaters. If that's ok, check the grounds. Check power to the heaters while you are there.

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Heat and air conditioning does not work.


say what dont work.
ok the blower blows, and for sure on high.
so what do you want , and where.
heat to cab?
cold air conditioning to cab?
does not work, ok
lets do 1. no heat to cab,
blow fuse is 1st . check all fuse. (see glove box operators guide)
if no heat:
check engine heat, is it 180F and holding
check cap heater core hose, in heat mode are both hot. ?
if both are hot you have heat to the core and is a damper failure
in the heater box (or controller)


this car is a frankencar.
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Aux heater blowing blue smoke but no heat


That may be antifreeze mist you see. check the heater core

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2003 Z4 Heater stuck on full heat.


take the heater apart and then you might be able to fix it that way if that doesnt work then take it to the shop

Jan 09, 2012 | 2003 BMW Z4

1 Answer

No heat I have changed thermostat,blow air thougt


I had this exact problem. Suspect a clogged heater core and you will probably have to replace it. Make sure you have the valve that opens the heater that works. You can remove it and see if it works. The valve is a vacuum valve that is connected within 10 inches of the 2 firewall heater hoses.

If the valve opens and stay opens and passes water well then disconnect the output of the heater and verify the that water flows well and you may be ok with the heater core being ok.
I know you do not like to hear but with all these tests, you should replace the heater core in the cab. It is a pain to remove but doable.

e

Sep 20, 2011 | 1992 Dodge Caravan

1 Answer

My 1998 toyota camry heating doesn't work, a/c is ok


Sounds like your heater core went out or is plugged, try doing a coolent flush on your system and if that dont work then youll propably have to replace the heater core. Hope this helps

Feb 27, 2010 | 1998 Toyota Camry

1 Answer

Engine warms up prperly but no heat comes into cab.


sounds like the heater matrix, can you here the fan working on the heaters?

Jan 13, 2010 | 1998 Saturn SL

1 Answer

Heater system not working/heater value system /switches control working, but no heat, put theorstat in and no heat still/


Hello there :
What you are going to have to do is either check out the heater core by a shop or you can do it your self.
Check to see if all of the wires are connected to the heater motor and see if the heater motor is working if not replace it if it is working than i would then look into having the heater core replaced OK?

Nov 11, 2009 | 2003 Mitsubishi Galant

1 Answer

Cold air coming out car heater, turn heat up to 90


check water level in rad if ok check thermostat or couldbe a plugged heater core.also check for vacum to heater door is working

Nov 13, 2008 | 1998 Mazda Millenia

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