Question about 1985 Chevrolet Monte Carlo

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Heat doesn't work

Heater blower does not work. replaced blower and resister, but won't blow

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  • Chevrolet Expert
  • 113 Answers

Check fuses check vaccum tube line along firewall

Posted on Dec 30, 2013

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Posted on Jan 02, 2017

Zeevert
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SOURCE: Heater is not working. A/C works properly, blower,

Have you checked the engine coolant level?
The coolant can be low enough to starve your heater core, but high enough to still keep the engine from over heating.
If the coolant bottle is empty, make sure you top off the radiator itself... well it's cooled off.

Posted on Oct 31, 2009

  • 1118 Answers

SOURCE: Heater blower did not work and does not produce

Back flush the heater core could be pluged up with scale, if that don't help than try a thermostat but do the flush first.

Posted on Nov 20, 2009

  • 2 Answers

SOURCE: heater not working right in 1999 silverado

First check the coolant level if the engine is hot check the reserve jug on the firewall--if cold before start up remove the radiator cap and check coolant level add as needed. If the thermostat has been removed it needs to re-installed. It is possible that the heater hose(s) is stopped up. After letting it run for a period of time both heater hoses should be hot to the touch if they aren't something is restricting the flow of coolant the system needs to be drained and flushed. I have also see some vehicles form an air lock in the coolant system causing the same thing. It then needs to be (burped). This can be checked/done by removing the radiator cap while the vehicle is idleing and watching the water level in the radiator squeeze the upper radiator hose to see if the water/coolant level rises in the radiator. When you release the hose you may need to add some coolant this forces out the air. Hope one of these things. These are some of the cheapest fixes and if they don't work/help then you need to start looking at the heat control selector.

Posted on Dec 30, 2009

  • 432 Answers

SOURCE: 2004 silverado for some reason the heater/ac

Well had the same issue on my duel climate controll 04 2500HD but changing the heater control solved the different temp.The only other thing would be your mixer door motor.There are two,one for DR side is probibly stuck..As far as the blower motor.The resister should have taken care of that.Sounds like you may have another bad one.May want to take a volt meter to the resister plug in and run you different fan speed just to make sure that you get voltage to the different conecters.

Posted on Jan 18, 2010

  • 740 Answers

SOURCE: my a/c blower is not blowing-when driving down the

the blower is under the dash on the passanger side. before replacing the blower motor,unplug it and hook a ground and a possitive to the connections and see if the blower motor works if it does then replace the blower motor resistor.to find the resistor follow the wires from the blower motor they will end at the resistor.
This is the most common problem with the blower not working.

Posted on May 13, 2010

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2 Answers

Everything seems to work??? still no heat?


dirty heater coil, clean it out so the hot air will travel thru

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I replace the heater blower in my 1989 volvo 740, the heat is now working but the problem is that it only blows after i turn it on #4, doesn't work on lower settings, pls advise


Geraldine,I would venture that the resistor board,usually mounted near the blower motor,has almost gone all the way bad. Have someone check it. Of course,it could be the blower speed selector switch,but probably not.
don-ohio (:^)

Dec 01, 2011 | 1989 Volvo 740

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No air is blowing in my 2004 Nissan Maxima. I put 12 Volts directly to the blower and it starts blowing. I checked if current was coming from the feed wire and it was. But when I plug it back in, it...


The engine oxygen sensor code is a different maintenance item and has nothing to do with the cabin blower.
If you have a clogged vent, dirt-loaded heater core or stuck air door, the blower may be running while installed, but no air is moving. You did not say whether the blower was left installed or removed for your test with an independent power source.
If you have voltage on the connector to the blower, but it doesn't run when it's connected, then you have a bad connection in the connector or an open ground. Check for tarnish or dirt buildup on the connector terminals. My favorite means of removing light tarnish is a pencil eraser, but for the heavy tarnish I usually see on automotive electrical equipment I use Scotch-Brite abrasive sheet (not the kind on a dish-cleaning sponge, the kind used for metal polishing). If the male terminal is a flat blade, you can clean the female terminal by wrapping a strip of Scotch-Brite around the end of an ignition file or similar stiff strip of metal and running that into the terminal. If it appears the female terminal blades are spread too much to make reliable contact with the other terminal, try pushing them together with a jeweler's screwdriver.
It's also possible there's a sensor circuit (temperature, airflow or closed-loop motor speed control) that controls the blower that isn't working properly. What happens when you try to run it at full speed and maximum heat or cool?

Oct 30, 2011 | 2004 Nissan Maxima

1 Answer

Heater fan in 1991 Pontiac sunbird stopped working. We have replaced fuses, and the fan motor. Still not working, continues to blow the fuses. What to do?


Replace the blower motor resistor assembly. To locate the electrical connector for the blower motor resister, it is usually attached to a heating or air conditioning Duct, or the blower motor case. You can also trace the Purple Wire from the blower motor back to the resister. Also make sure that the blower fan is not jamed up with somthing in side and will spin freely,or binding same thing, this will also cause the fuse to blow right away. And does the motor actually spin a bit before it blows the fuse or does it blow the fuse at the same time the switch is turned on? Good Luck and have a good XMASS.

Dec 17, 2010 | 1991 Pontiac Sunbird

2 Answers

My 98 accord heat only works on high the first thing i noticed was the clock light was not on


This is your BLOWER Motor RESISTER BLOCK that has FAILED , Causing it to Blow at ONLY




at 1 Speed 1rejakwilson.jpg

Nov 28, 2010 | Honda Accord Cars & Trucks

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99 Dodge durango heater not working


The blowers ion the back have there own blower motor. The front has it's own. The resister controls the range the blower motor runs on,( low, medium, high). If the blower motor is not working it may be the motor itself. Was the fuse checked:?

Jan 04, 2010 | 2003 Dodge Durango

1 Answer

94 Celica Heater not blowing


Could be a blown fuse for the blower motor or the blower motor itself is worn out. There is also a blower motor resister pack that could be at fault--it has three resisters in it that vary the blower speed--but it would be unusual for it to fail in such a way that the blower stops. Usually it just gets stuck on one speed. However, the resister is located down near your feet on one side (I forget which for that model) and if the wiring connector becomes unplugged (from an accidental kick), then the blower won't work.

Feb 21, 2009 | 1994 Toyota Celica

1 Answer

Rear heat blows cold air


one of the second heater core lines is clogged.

Jan 05, 2009 | 2004 GMC Envoy

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