Question about 2000 Ford F250 Super Duty Crew Cabs

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Thermal Limiter cant locate where it's at in my Daddy's truck. Please help a girl out, I know it's suppose to be near the evaporator box?!

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  • Ford Master
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The air conditioning compressor is not engaging ? the evaporator box is on the passenger side next to the firewall you will see two metal lines coming out of box the larger line goes to the receiver filter drier on it has a low pressure cycling switch with two wires in connector unplug this and jumper wires together if a/c compressor comes on it is low on refrigerant.

Posted on Nov 17, 2013

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The ac isnot kicking in. sorry bot the typing im tending to my 18 monthold girl.shes is trying to help daddy.lol


This is a vague description and you have provided no information on your vehicle type, model, year etc, but based on the limited information you have given, your issue could be any of the following:

1) System leak. Check refrigerant level with a system pressure tester.
2) Blocked or faulty pressure valve.
3) Blocked condensor
4) Blocked evaporator
5) Faulty radiator fan
6) Blown fuse
7) Faulty AC switch/blower switch

Jul 19, 2014 | Cars & Trucks

1 Answer

E46 manual getting warter on the comp box after running for a while, so I always have to stop and blow the box. Can anyone help with ideas on the route cause of the problem


computer box on E46 are normally located near your compartment which is also near your evaporator. check if drain plug of evaporator is nicely sealed. this is the only possible source of water inside your car.

Jun 11, 2013 | Cars & Trucks

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

Ac will not blow threw vent


The ac resistor is located on the blower motor under the right side of the dash. Looks like a black box bolted to the housing of the motor. You can check the resistor by first looking to see if the thermal limiter is still good. The thermal limiter keeps other parts of the resistor from being damaged from to much heat. If there is stuff melting from between the contacts then you need to replace your resistor due to the thermal limiter damage. If no damage then check your continuity between the terminals of the resistor withan ohm meter. These are the ohm reswistance that they shopuld be within if they are not then you need to replace resistor:between terminals 2&3 8ohms or less, 2&4 1.8 and 2 ohm, 1&4 2.3 and 2.5 ohms. If all tests passed check brown and Orange wire(positive) terminal and check for voltage. There should be at least 10 volts being supplied to this terminal (when the motor is not in off position). If there is not at least 10 volts there then the problem lies somewhere between fuse panel and ac control panel. If there is 10 volts of power and it still is not working check the ground wire(orange and black) to see if the ground wire is insufficient. I don't know if you need all that but If you do end up trouble shooting you have the info you need. I hope i helped.

Jul 26, 2010 | 1998 Ford Explorer

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

1999 grand marquis were the blower motor resistor is located


this is for manual heater system. If you have electronic (digital display) you don't have one. Instead you have a blower motor speed controller.

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 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.
  • An overheating protective device (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.

Dec 12, 2009 | 1999 Mercury Villager

2 Answers

F150 2004 blower working only on high position.


this is because your blower motor resisters are burned out for speeds 1,2 & 3. High speed does not have a resister.

Replace the resister. If it goes a 2nd time, it is because your blower motor is failing & drawing too much current.

it is behind the glove box I think. It is in the plenum case where air blowing on it keeps it cool.

Easy repair. May need to access throught glove box which should open all the way down when you squeeze the sides in.

Go to tascafordparts.com for a discounted resister.
Please rate as solved problem if this is what you needed.

------------------------------------------------------------------------------
Manual Climate Control System Outputs
Blower Motor Switch Resistor
Blower Motor Resistor Coils 9ba1105.gif Blower Motor Thermal Limiter 47afe58.gif The heater blower motor switch resistor has the following features:
  • The assembly is located on the passenger side of the plenum assembly behind the glove compartment (06010).
  • Three resistance elements are mounted on the resistor board to provide four A/C 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.
  • 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.

Mar 23, 2009 | 2004 Ford F150

1 Answer

Blower problem


The blower motor resistor:
  • is located on the heater core and evaporator core housing near the blower motor.
  • has three resistor elements mounted on the resistor board to provide four blower motor speeds.
  • depending on the blower motor switch position, series resistance is added or bypassed in the blower motor circuit to decrease or increase blower motor speed.
  • has an overheating device (thermal limiter) that will open the resistor coil when the temperature reaches approximately 184°C (363°F) , interrupting the blower motor operation in all speeds except high.
  • is serviced as an assembly. The thermal limiter cannot be reset and is not serviceable.
REMOVAL
  1. Lower the glove compartment.
  2. Remove the screws and position aside the 4x4 control module.
  3. Remove the blower motor resistor.
4 Disconnect the electrical connector. 5 Remove the screws and the blower motor resistor. INSTALLATION
  1. To install, reverse the removal procedure.

Nov 06, 2008 | 1995 Ford Explorer

2 Answers

1996 ford taurus


If you can, check if there is voltage at the blower motor connector with the ignition on and the engine not running. If you have voltage, the blower is bad. If no voltage, it may be a bad blower switch, the blower motor resistor assembly, or the wiring between them.

The resistor assembly is on the evaporator housing under the dash on the passenger side and near the blower motor. The glove box must be removed to check this and the blower. A thermal limiter resistor is built into the resistor assembly and will open, ie melt, with excessive heat.

Without more details on this, it appears either your blower motor or the blower motor resistor assembly is bad.

Oct 07, 2008 | 1996 Ford Taurus

1 Answer

My blower is not working


Description and Operation Notes 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.
  • An overheating protective device (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
83205358Here is the description of how it works and the location of the blower motor resistor that is most commonly the Problem If you don't receive the pictures or text email me at fixincars@yahoo.com and Ill email them to you if this information is helpful please give me a fixya Rating and of course contact me if there is anything I can do to help.

Aug 26, 2008 | 2000 Mercury Grand Marquis

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