Electrical - Heater won't work | Ford Escort Owners Association (FEOA)

Electrical Heater won't work

Discussion in 'ZX2 1998-2004 2.0L DOHC' started by Jayloo, Jan 12, 2020.

  1. Jayloo

    Jayloo New Member

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    So we have a 2002 ford zx2 with about 140k miles on it currently. For the last 6,000 miles the heater stopped working. Since we're tired of being ice cubes we tried to trouble shoot the problem starting with the blower motor itself. We ended up just replacing it because the old one was just in bad shape in general. The resistor was replaced and so was the relay. We also ended up replacing the switch (we did all of this because it wouldn't work after each fix, yes I know terrible trouble shooting! lol). Oh we also replaced the fuse too

    Anyways kind of outa ideas at this point and lost.. The wires themselves looked in pretty good condition and we even cleaned them properly just in case. The new blower motor was tested and works itself as well.
  2. 04Svt

    04Svt FEOA Member

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    Make sure the knobs are actually turning to the heat setting. Some people are rough with them and break them and they just free spin. Also the heater core could be plugged. You can try flushing it out. If it’s plugged you won’t get any heat. Make sure the cooling system is full. If it’s been opened up it may have air in it .
    These are a few things to check. Report back and I’ll try to help as much as possible.
  3. 04Svt

    04Svt FEOA Member

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    Is there any coolant on the passenger side floor board? When the core goes bad it leaks into that area.
  4. 04Svt

    04Svt FEOA Member

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    If the radio has been out some people yank it out and it breaks the cable going to the box that controls the cold and hot. It under the drivers foot well and snaps in . I found a broken one I had to fix before on a wagon.
  5. pextor

    pextor Moderator Staff Member

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    It sounds like it just isn't blowing air at all, right?
    I've experienced a bad connection at the blower motor resistor (right next to the blower motor itself) and a "loose" fuse - I ended up having to bend the terminals on the fuse a little to get it to make contact permanently.

    If you want to fix it correctly, get yourself a digital multimeter (spend about $20 and get a decent one) and learn the basics of how to use it to check for voltage and continuity.
  6. Jayloo

    Jayloo New Member

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    Theres no coolant leaks. Im not sure if its the heater core because the motor blower in general just wont turn on. Ill take a look anyways since its an old car thanks! Going to take a look at the radio today as far as I knew the radio itself was stock and never touched. I was the only one to touch it myself and thats only when I replaced the switch as a last desperate attempt to get the thing running. It does make me thing if something came loose though so ill take the whole thing out and get back to everyone. Ill double check the fuses as well @pextor and the connections. Thanks guys ill keep in touch.
  7. pextor

    pextor Moderator Staff Member

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    If you were close by I'd gladly help you out with it.
  8. Jayloo

    Jayloo New Member

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    Alright so I checked the radio and everything. Every was fine in general with the setup behind there all the wires were in place, nothing looked out of the order or fried. Looked pretty stock in general like it was a first time being removed to me all the way. No fuses were lose with respect to the system and the connection with the resistor is fine. I do have a multimeter, but im like a newborn infant when it comes to using it on the car. Like testing if power is coming through the power cord im not sure where to ground it and this is with video help. I wish is was just an actual mechanical fix lol those are easy for me. I do have a suspicion it may be a cord issue though if I can get the testing to work

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