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Hyundai Engine dies when A/C-heater blower is switched on. Is it the resister motor?

Car runs fine with blower off, but dies immediately when blower is turned on.

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  • Hyundai Master
  • 3,679 Answers

I would think it might have more to do with the alternator charge rate ,as the A/C use a lot of engine power so the other components get reduced power from the engine ,so the alternator raises the power to the battery and so to the other electrical components,if the charge rate is low the engine can die ,does it start ok when A/C is turned off ?

Posted on May 13, 2014

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Posted on Jan 02, 2017

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  • 2 Answers

SOURCE: Heater Control Switch Only Works on High

Your problem is probably a part called the heater resistor block or board. When this part burns out you will only have high speed on the fan. On my 1999 voyager it is located on the firewall and it snaps in a hole in the firewall. This is under the hood behind the alternator.
Mine had a multi pin black plug plugged into it. Unplug the plug and
you should be able to pull the block out insert new block and plug plug back in and it should come to life.

Posted on Nov 27, 2008

jomabug76
  • 1148 Answers

SOURCE: blower motor relay location

UNDER THE DASH EITHER THE RGT OR THE LEFT,,,,IT WAS ON A 93

Posted on May 15, 2009

jasperoni
  • 203 Answers

SOURCE: car dies when heater turned on

Assuming your charging system is working properly-You probably have an idle speed control problem. Behind the battery there is an over voltage relay with red top and a 10 amp fuse in it. This relay powers the a.b.s. and the idle speed control unit. Make sure fuse is o,k, and that the relay is not corroded. Next there is 2 micro switches on the throttle linkage(you will have to remove the air cleaner. This switches are tested with an ohm meter and show continuity in one position and open in the other(don't worry if the ohm reading is high).Next to the over voltage relay there is 2 black relays(one fuel pump the other is climate comtrol) The one that says klima is the climate control. Make sure it is not corroded and a lot of times the electrical connector gets bowed and you will lose contact. This relay is really more of a control unit and gives input to the idle and c.i.s. control units as far as the a/c and heater operation. Hopefully I have been helpful

Posted on May 30, 2009

roniecon
  • 6826 Answers

SOURCE: Heater fan not working 1995 dakota

yes the switch but these all work together so replacing all this i s good cause one effects the other

Posted on Jul 01, 2009

  • 7353 Answers

SOURCE: My heater's blower motor runs even when the car is OFF

You MAY have an "Ignition Switch " thats bad.

Posted on Nov 16, 2009

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1 Answer

Need to locate the motor blower resistor for my 1999 mercury mountaineer, it has dual air, the resistor for the back is fine but the one in the front is bad and i cannot locate it. Please help.


If you have a manual system, you have a resistor. If electronic, you have a blower motor speed controller. Please rate if this helps.

here is info:

Control System Outputs-Manual A/C
Blower Motor Switch Resistor
The heater blower motor switch resistor has the following features:
  • The assembly is located on the evaporator housing in the engine compartment.
  • Three resistance elements are mounted on the resistor board to provide four blower motor speeds.
  • Depending on the heater blower motor switch position, series resistance is added or bypassed in the blower motor circuit to decrease or increase blower motor speed.
  • An overheating protective device (thermal limiter) will open the resistor coil circuit when the temperature reaches 121°C (250°F) interrupting the blower motor operation in all speeds except HI.
  • The thermal limiter cannot be reset and is not serviceable.
Control System Outputs-EATC
Blower Motor Speed Control
The blower speed control is located on the evaporator housing in the engine compartment.
  • The function of the blower motor speed control is to convert low power signals from the electronic automatic temperature control module to a high current, variable ground feed for the blower motor (18527).
  • The blower motor speed is infinitely variable and is controlled by the electronic automatic temperature control module software.
  • A delay function provides a gradual increase or decrease in blower motor speed under all conditions.

Jan 10, 2011 | 1999 Mercury Mountaineer

1 Answer

2001 Malibu 3.1 starts then dies immediately. When I turn the key on the car will start, then die immediately, there is no security light on and the car has 3/4 tank of fuel. Also yesterday the heater...


this sounds like a crank position sensor issue, however check the condition of the battery and for tight battery connections first. The blower motor may be another issue, blower motor relay or a loose or burnt connection at the blower motor or the blower motor resistor and lastly a bad blower motor.

If your check engine light is on have the codes read. This may help you in finding the problem.

Jan 05, 2011 | 2001 Chevrolet Malibu

1 Answer

Where is the blower resister on a 2004 crown victoria


very unusual location. usually inside the car in the plenum case by passenger floor, but here it is:


Blower Motor Switch Resistor
The heater blower motor switch resistor has the following features:
  • The assembly is located in the engine compartment on the evaporator housing toward the center of the vehicle.
  • Three resistor elements are mounted on the resistor board to provide four blower motor speeds.
  • Depending on the heater blower motor switch position, series resistance is added or bypassed in the A/C blower motor circuit to decrease or increase A/C blower motor speed.
  • A device to prevent overheating (thermal limiter) will open the resistor coil when the temperature reaches 121°C (250°F) interrupting the blower motor operation in all speeds except HI.
  • The thermal limiter cannot be reset and is not serviceable.

Feb 19, 2010 | 2004 Ford Crown Victoria

1 Answer

My Blower motor for my heater on a 99 ford escort is not working.Is it the motor or resister that is gone??the fuses look ok where is the resister located can you send a diagram


look in passenger foot well on blower case for 4 wire connector.



Behind right side of I/P, A/C-heater plenum


resister bad would still allow high speed. may be blower motor.

  • The blower motor does not operate/does not operate correctly
  • Open fuse.
  • Tripped circuit breaker.
  • Circuitry open/shorted.
  • Heater blower motor switch (18578).
  • Heater blower motor switch resistor (18591).
  • Blower motor relay.
  • Blower motor.




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Jan 16, 2010 | 1999 Ford Escort

1 Answer

I have a 1988 1/2 chevy pickup, defrost fan was working fine yesterday, then it just quit. The fan did not make any funny noises, it just died. I checked the fuses i could find, they were ok. Is there a...


Run 12 volts directly to the motor and see if it will run, if it does run when you do that it could be a fuse that maybe you missed or the resister is bad, chanses are its the resister, should be located above heater box behind glove box door it will have a plug with wires going to it. If it don't run then you know that its the blower motor is bad.

Dec 07, 2009 | Chevrolet 1500 Cars & Trucks

1 Answer

I have a 2000 ford E350 van with front and rear air. the front blower motor runs at low speed, The front blower still runs on low even when the knob is set on medium or high. I do not know where the...


it's either the blower motor switch or blower motor resister. Resistor ?Heater Blower Motor Switch Removal Remove the battery (10655) ; refer to Section 414-01 . Remove the battery tray. Remove the screws. Remove the battery tray. Disconnect the heater blower motor switch resistor connector. Remove the heater blower motor switch resistor (18591). Remove the two screws. Remove the heater blower motor switch resistor. ----------------------------------- Switches Removal Disconnect the battery ground cable. Remove the center trim panel; refer to Section 501-12 . Remove the control assembly. Remove the screws. Remove the control assembly. Remove the A/C-heater function selector switch knob. Disconnect the vacuum harness connector. Disconnect the A/C-heater function selector switch connector. Remove the A/C-heater function selector switch. Remove the screw. Remove the A/C-heater function selector switch. Remove the temperature control switch knob. Disconnect the temperature control switch connector. Remove the temperature control switch. Remove the screw. Remove the temperature control switch. Remove the heater blower motor switch knob. Disconnect the heater blower motor switch connector. Remove the heater blower motor switch (18578). Remove the screw. Remove the heater blower motor switch. ----------------------------

Mar 31, 2009 | 2007 Ford E-350 Super Duty Length XLT

1 Answer

Blower motor


I had the same problem and replaced the blower motor . it is located up under the glove box . and I test the old one and it would run fast if i shook it .the bearing or something wears out in them . I got one from a wrecked car for 20 verses 78 new . and it works fine . john

Jan 20, 2009 | 2002 Pontiac Grand Prix

1 Answer

Blower on heater not working


i am no expert on this type of car but you can try this. first i would see if you got power from the switch. if you can get to them. if no power than i would say it is the switch. but also i would find out if there is a resister for the heater. if there is this could also be the problem. heater resisters chg. the speeds for the heater motor and also make heater motor run. its either located on the heater box or the air evaporator box if it has one.

Jan 06, 2009 | 1998 Mercedes-Benz C-Class

1 Answer

Car starts, then dies within 2or3 seconds.


Try this start eng and before it dies disconnect the starter solenoid, and hold the ignition in the crank position like you are starting it, if the engine remains running replace the ignition switch, they come apart and cause this issue

Sep 20, 2008 | 1996 Lincoln Mark VIII

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