2002 ford e250 only blows very little air while moving.control switch connector replaced, resistor&connector replaced.blower motor location and how to diagnose?

its located in the air box under the passenger side dash about 8" from the blower motor. if you follow the wires off of the blower motor back it will take you to the resistor. unplug the connector and remove the bolts(small) and pull it out.

you need the service and repair manual in which you will find the part number and also how to fix the part with diagram you can get the manual from the given link http://toolsnyou.com/

Might be the Resistor pack located close to the blower. It has a flat connector with 4 or 5 wires, and two small screws holding in the duct. It may be a crispy critter. It happens... The blower moves air across it to keep it cool. The blower motor may be bad as well, or possibly the fan speed switch. May very well be the fuse for the blower as well. The blower connector may be loose. Let me know what you find.

REPLACE BLOWER MOTOR RESISTOR. IF YOU GET ONLY ONE CONTROL SPEED.IF YOU HAVE ALREADY REPLACE BLOWER MOTOR RESISTOR.BLOWER MOTOR CONTROL SWITCH BAD. REASON BLOWER STAY ON ALL THE TIME.FAN BLOWER MOTOR RELAY BAD.
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You have got a defective blower motor resistor. Your blower resistor is located just to the left of your blower motor (which is located under the passenger side of your dash. You may find you have a carpeted covered piece of cardboard that is located on the underside of the dash (below the glove box ) if so you'll have to to remove it by removing the retaining clips, Now look up behind the glove box and you"ll see the blower motor and just to the left of it there is rectangular unit with a connector with six wires within the connector , the colors of the wires will be as follows (black and orange)(black and yellow)(two wire's that are black and white)(black and blue)and (black). the blower motor resistor is totally bypassed when you turn your fan speed to high ! The blower speed is controlled by the ground side of the blower. When you request any of the other three speeds the ground circuit is routed through the blower resistor which is made up of three resistors.( resistors reduce the current flow) and each resistor reduces a predetermined about of current.So when you request medium high blower speed the ground circuit runs through one resistor, if you request medium low the ground circuit runs through two resistors , and through three resistors to obtain low blower speed, Normally what happens is the blower resistor blows out the circuit between the fan switch and the blower motor resistor which results in the lost of all lower speeds,no different then the wire to the blower motor just being disconnected.Replace the blower motor resistor and you will in great shape .Thanks for using fixya

OK. So the blower notor isn't operating. Do you have power to the blower motor? The resistor is new from what I got. If you don't have power to the blower motor, then check the speed control switch and fuses. If you have power at the blower motor, replace the blower motor

the blower motor resistor relay are bad about shorting out and melting the connector causing a loose connection and when you hit it or a bump it'll make connection and work. look under the passenger side dash and you'll see two wires coming from the blower motor. trace those two wires to a little black box with somemore wires pluged into it and try to unplug the other connector that has about five wires coming from it. turn your key on and your a/c with the blower speed set on high, try moving those five wires if the fan blows and quits, then this is the problem. you'll have to replace the resistor and the wire connector.

most likely the blower motor try tapping it if it makes a noise or starts blowing a replacement is necessary

If it blows only on high speed, it is the resister.
If it does not work at all, check fuses first. See owner manual for location.
Then check blower motor by jumping 12 volts from battery to blower motor. Make sure ground is jumped too.

If it works now, it's the control panel. If not, it is the motor.

Blower Motor —Front Removal and Installation

1. Prepare the vehicle for blower motor (19805) removal.
   1. Disconnect the battery ground cable (14301). For additional information, refer to Section 414-01 .
   1. Remove the air cleaner assembly. For additional information, refer to Section 303-12 .

1. Detach the speed control servo.
   1. Disconnect the electrical connector.
   1. Remove the bolt.
   1. Position the speed control servo aside.

1. Position the coolant expansion tank/windshield washer reservoir aside.
   1. Remove the screws and the nuts.
   1. Position the coolant expansion tank/windshield washer reservoir aside.

1. Remove the blower motor.
   1. Disconnect the vent hose.
   1. Disconnect the electrical connector.
   1. Remove the four screws.
   1. Remove the blower motor.

Also,

Heater Blower Motor Switch Resistor(s)
The front heater blower motor switch resistor has the following features:

• The assembly is located in the engine compartment on the evaporator housing (19850) next to the blower motor assembly (19805).
• 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 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 high.
• The thermal limiter cannot be reset and is not serviceable.

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. ----------------------------