Question about 1988 Ford Econoline

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88 Econoline van....no heat or ac...what might be the problem

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  • ajgraham70 Sep 09, 2010

    Already checked fuse. whats a resister. Could it be the blower motor? and are they easy to change?

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  • Ford Master
  • 4,369 Answers

Check for a blown blower motor fuse or a bad blower motor resistor in the plenum housing.

No blower motor?

Posted on Sep 09, 2010

Testimonial: "Thanks... I have already check the fuse. Could it be the blower motor itself? Where is that located and is it easy to change/ "

  • gerry bissi Sep 10, 2010

    This is for 1992. Don't have 1988.



    Blower Motor and Wheel Assembly


    1. Disconnect blower motor wiring connector.





    1. Remove four screws retaining the blower motor mounting plate to the evaporator case assembly.


    1. Remove the motor and wheel assembly from the evaporator case. Align the flat spot on the motor mounting plate with the accumulator to provide clearance with the accumulator.


    1. If the wheel is to be used on the new motor, install it on motor shaft so that distance from mounting plate to base of wheel is the same as the old motor installation.


    Installation


    1. When wheel is properly installed on new motor, insert wheel into evaporator case and align locator pins with the holes in the base plate.
      NOTE: Align the flat spot on the motor mounting plate with the accumulator to provide clearance with the accumulator.


    1. Install four retaining screws.


    1. Connect electrical wiring connector to blower motor.


    1. Check blower motor for proper operation.



    ----------------------------------------------------

    Blower Motor Resistor

    Removal and Installation


    1. Disconnect the electrical lead from the blower motor resistor.


    1. Remove the two screws which attach the resistor to the heater case.


    1. To install, align the resistor with the holes in the case and in the baffle.


    1. Install the attaching screws.


    1. Install the electrical M-10 connector.

    -------------------






    Section 12-02A: Heating System, Econoline

    1992 Bronco/Econoline/F-Series Workshop Manual

    MAJOR COMPONENTS



    Blower Motor Resistor
    A resistor with a thermal limiter is mounted in the heater/blower assembly. The resistor is used in conjunction with the blower motor switch to obtain the desired fan speed. The thermal limiter in the switch assembly serves as a temperature sensitive fuse.

  • gerry bissi Sep 10, 2010

    picture




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SOURCE: 88 Celica has no heat. AC works fine. Any ideas

the a-c and heater run on 2 different systems the heater needs coolant going thru the heater core to make heat by blowing air through it and the a-c uses it's own sealed system to cool the air so if you have no heat / it has nothing to do with the a-c working or not . first thing you do is check the cooling system like rad and coolant levels . you will have heater core hoses running from the engine to the firewall going to the heatercore . grab the heater core hose and feel if it's hot . if your hoses are hot then the heater core is bad or the blending doors are stuck .

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SOURCE: 2002 econoline ac front heat rear is problem

Heat and a/c is controlled by a vacuum servo on the rear heater box. if vacuum is lost then the servo defaults to heat. I recomment removing the rear left quarter trim to access the vacuum servo(servo cylindrical and a little smaller than 1/2 soup can, it has a flat metal rod sticking out). Use a vacuum pump to test the servo and see if it moves and holds vacuum. If it doesn't work them replace it. If it does work then test to see if there is vacuum at the hose that attaches to the servo (with engine running try test in both a/c and heat modes) it should have vacuum in a/c mode. If no vacuum is present then you will have to trace the vacuum line back to the heater contol head looking for splits or cracks. At the heat control head you can test to see if vacuum comes from the control head or not. I suggested starting in the rear because servo failure is rather common since it is only used seasonally.
I hope this helped. This is all based on a ford factory system. Your vehicle description says "cutaway" so if it has the ford rear system this will work. If it is not a ford system then I would need more info as to what kind of system it is.

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Posted on Jun 05, 2011

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