Question about 1985 Mercedes-Benz 190

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Blower motor no electric at switch no fuses are bad,had blower motor out and it worked. checked for electric at switch had none.

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Strip fuse is blown should be by the driver side strut mount in a tootsie roll shape snap box. Or its the blower motor regulator which is under the blower motor.

Posted on Jul 07, 2009

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The blower motor isn't working when cutting the climate control on..The compressor is working but no air is blowing out. is there a fuse that operates the blower motor?


Yea, check all your fuses first

blower motors work by way of electrical resistance. Imagine how a dimmer switch works in a house, thats all your doing when turning the fan speeds up or down, just adjusting the voltage to it, well there are generall 3 coils (dont quote me exactly here) but anyways these coils offer paths for electricity but also resistance...well just like when you rub your hands togethor fastly they get warm, these coils im talking about will actually glow they get so hot, and eventually they could just break from being hot to many time.. I know thats a long answer to what the problem is, but knowledge is power they say.

so if there is no air coming out then theres definetly a problem, either fuse or bad blower motor,

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Blower not working


To determine the cause of a blower fan failure, isolate the motor, and perform some basic electrical tests.Check fuses first. Fuse failure often causes component failure. Check for power at the motor itself. Test the connection to the blower motor. Test the switch.-------------------------------------------------------------------
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My fan motor and windows and radio loose power, like its a loose wire or a short to the framae from the primary fuse box to the secondary one, how can i find the problem and fix it


COULD HAVE CORROSION INSIDE FUSE AND RELAY BOX CAUSING POOR CONTACT IN ELECTRICAL CIRCUITS. REMOVE FUSE AND RELAYS TO CONTROL CIRCUITS SPRAY A LITTLE ELECTRONIC CLEANER ALLOW IT TO DRY.CHECK BLOWER MOTOR RELAY IT COULD BE BAD OR BLOWER MOTOR RESISTOR BAD HOT BLOWER MOTOR TO SEE IF BLOWER WORK IF NO YOU HAVE FAULTY BLOWER MOTOR. IF BLOWER MOTOR WORKS WHEN YOU HOT WIRE BLOWER MOTOR CONTROL SWITCH COULD BE BAD.RADIO AND POWER PROBLEM COULD BE IN THE FRONT CONTROL MODULE IF CLEANING OUT CONTACT WITH ELECTRONIC CLEANER.DEALERSHIP HAS TO CHECK IT OUT.

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1 Answer

The blower motor is not working on any of the speeds


have you tried to tap on it with the switch on to see if it will come on if not try that first.also see if the ac switch light comes on when you turn on the blower switch with ac button on. if the light comes on on the switch then the fuse should be good for part of the circuit. next thing i would do is unplug the blower motor and with a test light see if the red wire has power on it and if so replace blower motor and if not check the 10amp gauge fuse and the 40 amp heater fuse.if none of this is the problem then there is also a heater relay........most of the time it is either the 10 amp ac fuse or a bad blower motor.......i hope this will help you let me know if i helped you in any way and what you found out...............good luck..........

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1 Answer

1996 ford contour heater blower motor doesn't work. only worked on high before


First, check the blower motor fuse. If it is ok, disconnect the electrical lead from the blower motor, and apply direct power and ground to the motor electric terminals. If the blower motor fails to operate, it is defective. If the blower motor now operates with direct power, but doesn't when reconnected to the car's electrical system, there is likely a problem with the switch, the blower motor resistor, or a bad connection in the wiring. Hope this helps.

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1 Answer

Heater does not work


Check heater fuse.
If fuse good - could be a failure of the blower fan motor or blower control switch.
If fuse bad - bad blower fan motor could have blown the fuse.
DO: check fuse, then blower motor.
Pricing: new blower motor: Duralast PM270 $43.99
new heater control switch: Duralast SW229 $46.99 (without
A/C).
I'd expect your blower resistor to be good - when they fail, the blower only will work on HIGH setting.

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2 Answers

My AC was first only working at the max setting now not at all


go for the reostat which is all in one with the blower motor ,expensive part though

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1 Answer

Electric windows and tempeture on dash are not working


IF ALL WINDOWS ARE NOT WORKING IT LOOKS LIKE.THE POWER WINDOW CIRCUIT BREAKER IS BLOWN.CHECK THE HEATER AND AC IGNITION FUSE.MAKE SURE POWER IS AT THE SWITCH.IF ALL IS GOOD.CHECK BLOWER MOTOR FUSE AND RELAY.IF THEY ARE GOOD.HOT WIRE BLOWER MOTOR IF IT WORK YOU HAVE A BAD BLOWER MOTOR SWITCH AND RESISTOR.IF BLOWER MOTOR DONT WORK.REPLACE BLOWER MOTOR.

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Blower motor and turn signals stopped working


CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL IS GOOD.CHECK TO SEE IF BLOWER IS GETTING POWER.IF NOT.SWITCH IS BAD.IF YES REPLACE BLOWER MOTOR.IF TURN SIGNALS STOP WORKING.CHECK FUSE FIRST.IF FUSE LOOK GOOD. CHECK BULBS TO SEE IF THEY ARE BLOWN.IF BULBS LOOK GOOD PROBLEM COULD BE WORN OR CORRODED BULB SOCKETS OR.BAD GROUND.OR THE TURN SIGNAL SWITCH IS BAD.

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1 Answer

Blower for heat.


If the blower is totaly not working it could be a bad motor or a loss of power (or ground) to the motor. There is a blower motor relay on the power distribution box on the right innner fender. There may be a fuse for the heater circuit, also. Power also goes through a blower motor resister that controls blower speeds. If any one of these are bad it will (can) cause the blower motor to not work. I would first check all your fuses. If you have the ability to check for power continuity (with a test light or multimeter) I would check to see if the motor is even getting power. It is also possible that your heater control switch is not sending power to the relay. Electrical can be hard to track sometimes. Good Luck.

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