Question about 2002 Mazda Millenia

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Heater stopped working

The heater wont work and with it on the cooling fan wont kick in, but if I put it on a/c the cooling fan works but the heater still wont work?

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I have a 1998 Pontiac trans-am and I replaced heater core and heater still doesnt work

Posted on Jan 23, 2015

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The heater core has gone out and will need to be replaced

Posted on Dec 07, 2008

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Posted on Jan 02, 2017

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1 Answer

My heat works on all settings whenever it comes on, but it can take up to an hour for the fan to kick in.


If the engine itself is running on the hot side, that's could be a thermostat/ heater control valve. If the engine itself is running up to par (cooling system, fans etc) sounds like a heater control valve issue.) Inside fan works well, no odd vent smell (rotten eggs). Heater control valve. Good luck Frank M

Feb 15, 2016 | Cars & Trucks

Tip

Scania Fault Codes


000 00 No Fault
01 001 less than the rated voltage - heater works
02 002 higher than the rated voltage - heater works
004 03 Short circuit fan (D2I)
005 05 Short-circuiting the wires from alarm (D2I)
009 09 Heater off system TRS (D2I / D9W)
010 0A higher than the nominal voltage (heater stopped)
011 0B voltage less than the nominal (heater stopped)
012 0C overheat - fuel pump is turned off
013 0D temperature sensor recorded a high temperature
014 0E big difference values of t. Dutch. overheating and Dutch. regulation. t (D3W / D9W)
015 0F heater overheated many times - the heater is turned off (D2I / D9W)
017 11 Reusable overheating (t exceeds the second threshold) (D3W)
020 14 Candle / rod defective bulbs
021 15 Short candles / kernel bulbs
022 16 switch faulty lights / lamps kernel (D2W)
023 17 Internal defect relay control R2 candle / bar bulbs
024 18 Short-circuit switch controller candle / bar bulbs
025 19 Short-circuit diagnostic socket
029 1D fan air gap 5 does not operate R3
030 1E air fan does not work in all positions (R3-D3W)
031 1F air fan does not work in all positions (R3-D3W)
032 20 Air fan does not work in all positions (R3-D3W)
033 21 Air fan does not work in all positions (R4-D2I / D9W)
034 22 No contact with solenoid valve system COOL. (D2W / D9W)
035 23 No contact with the relay average performance
036 24 Short-circuit relay average performance
037 25 Do not rotate water pump (D2W / D9W)
038 26 No contact with the fan relay cab heating (D2W / D9W)
039 27 Short cab heating fan relay (D2W / D9W)
040 28 Short electromagnetic. COOLING valve system. (D2W / D9W)
042 2A Short circuit water pump (D9W)
043 2B Short cable from the computer to the heater fuel pump (D9W)
047 2F Short circuit of the fuel pump
048 30 No contact with the fuel pump
050 32 Heater run many times but have not worked (relay R3)
051 33 Flames emerged immediately after pressing the start button heater
052 34 No start (restart purge)
053 35 Stop flame during startup
36 054 Stop flame position max. productivity
055 37 Stop the flame in a position average performance
056 38 Stop the flame in the position of poor performance
057 39 Flame sensor short circuit (photoresist)
058 3A heater is turned off, but the flame in the combustion chamber (D2W)
059 3B Water temperature rising too quickly (D9W)
060 3C No contact with the sensor temperature control
061 3D sensor short circuit temperature control
062 3E No contact with the potentiometer (D2H / D2I)
3F 063 Short potentiometer (D2H / D2I)
064 40 No contact with flame sensor
065 41 Flame sensor short circuit
071 47 No contact with the sensor overheating (D3W / D9W)
072 48 Short-circuit overheating sensor (D3W / D9W)
073 49 Overheating sensor recorded the fastest increase in temperature (D9W)
090 5A Spontaneous error
091 5B high surge (high-voltage wires, CB-radio, etc.)
092 5C Faulty heater control unit - fault ROM
093 5D Faulty heater control unit - faulty RAM
094 5E Faulty heater control unit - fault EEPROM
096 60 Temperature sensor faulty heater ECU (D2I)
097 61 Faulty heater ECU (D2I / D2W / D9W)
255 FF cleared but faulty memory EEPROM

source
http://truckmanual.weebly.com/scania-fault-codes.html

on Dec 20, 2016 | Cars & Trucks

1 Answer

1992 honda accord radio and ac stopped working


Make sure your fan is working properly. When you turn on the heater you are forcing the fan to cool the radiator. It may not be turning on automatically when it is supposed to. Let us know if this helps..

Oct 09, 2012 | 1992 Honda Accord Coupe

2 Answers

89 saturn fan does,nt kick on


cooling fan or heater fan? if its cooling fan then the coolant temp sensor is bad

Jan 06, 2010 | 1999 Saturn SL

2 Answers

Changed the thermostate and drained the radiatior and put new fluids in brought car to running temp but heater still wont blow hot are


Feel of the heater hoses going to the heater core,if they are not getting hot,then remove the heater hoses and flush the heater core out with a water hose.Also be sure to bleed all the air out of the cooling system.

Dec 20, 2009 | 1996 Ford Taurus

5 Answers

Keeps over heating i have new radator old one blew out this seems to be doing same i have buy past heater core and removed therm stat,what is wrong???


sounds like a head gasket leak, you can buy a kit at your local auto parts store , that you can stick on your radiator and will change color if exhaust gasses are present in the cooling system. alumiseal does a great job of sealing leaks on the straight 6 motors on these models

Aug 15, 2009 | 1999 Jeep Cherokee

1 Answer

Heater not putting out heat


Sounds like you may have a head gasket going. Is it running low on coolant? Or did it? Make sure it is topped off and the heater core is full. Let it run and see if it over heats and you have lost fluid. If so I would have a pressure test done on the motor to see if the cylinders bleed down. I hope it is something like the heater core not being full. I wish you luck.

Mar 09, 2009 | 1998 Subaru Forester

1 Answer

H/c fan stopped woking


loose contact on heater matrix and try swoping the switch on the door for the window

Mar 03, 2009 | 1997 Chevrolet Astro

1 Answer

Heater comes on and go off when it wants to.


What you're likely referring to is the blowing air starts and stops erratically. Since the heater uses heat circulated from the engine, if the air is constant and the heat comes in and out then that's a different issue.
Firstly, if the airflow starts and stops, you'll find a loose connection between the the fan switch and the blower itself. If the connections are sound, then look for a loose ground connection to the blower. If all electrical connections are good, and it still starts and stops erratcially, then it's time for a replacement blower.
Secondly, If the air is constant and the heat comes in and out, the the options are a faulty water pump or partial blockage in the colling system or heater core. If the water pump is failing and working erratically, then when the heat dissipates in the cabin airflow (it has used all the heat in the heater core and no circulation to replace the cooled water with hot water) the dash temp gauge should start to climb, indicating that the coolant is no longer circulating, the heat has left the heater core but the engine is not being cooled. You'll need to replace the water pump. If this is the case, take care of this ASAP as you run the risk of a an engine overheat.
If the dash temp gauge looks normal, then you're likely looking at a partial obstruction in either the cooling system or the heater core that blocks the flow and then works its way loose erratically. Limescale and crud buildup in your cooling system (especially in a 15-ys-old car) can cause this when flakes of buildup brake loose from the walls of the larger channels and get caught up in the smaller ones. Your local parts store will have additives to clean out the cooling system, but if they don't work (they can only do so much) then you're looking at a professional cooling system flush. If the issue persists after that then you're likely looking at a heater core replacement.
Also check to see that your a/c is not kicking in erratically. It shouldn't completely cool down the full-hot airflow, but it will cool it. You can tell if the a/c unit is kicking in as you'll hear the compressor clutch kick in and the engine revs/sound will change under the load. If this is the case look for a short in the a/c wiring.
Hope this helps, and please rate my answer.

Dec 31, 2008 | 1994 Geo Tracker

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