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1990 Ford Tempo Question: horn doesnt work from steering wheel

 

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Visitor, Redwood City, CA, November 28, 2010, 09:28

how do i fix my horn when i cant find any horn relay?my car doesnt have cruise control so theres no speed control amplier that its with and i have a manual transmission.i know the horn works when hooked to battery but doesnt from steering wheel when pushed.how do i fix this?

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    DaveJHM November 28, 2010, 22:46
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     Master

    Sounds like a switch or sliding contact (clockspring) failure behind the horn pad.

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    Visitor, November 29, 2010, 20:31

    i took the horn pad off and lightly sanded both copper contact plates because of some oxidation on them and still nothing

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    DaveJHM, November 29, 2010, 20:52
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    You know -- it's coming back to me that there was a common failure with the contacts in the steering wheel. You have to forgive me -- I haven't dealt with it in about ten years...but this was a common issue. However, I'm showing it from 1992 - 1994. I am thinking older vehicles are an issue too (1988 - 1994 were very similar Tempos...)

    The issue was this:
    The current going to the horn being too high and damaging the horn switch contacts. The fix was to install a Horn Relay Kit into the circuit. The relay kit will reduce current through the horn switch and reduce the possibility of damaging the contacts.

    The kit was dealer only - Part number F23Z-13A821-AA without tilt wheel, and F23Z-13A821-BA with tilt wheel.

    I have no idea if you can still get the kit - but try your local dealership.

    The concern was for a car exclusively with no air bag and no cruise control - so we have a match here.

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    Visitor, November 30, 2010, 19:48

    thanks,i will look into that.maybe thats why i cant find a relay for the horn,is there a way for me to wire up a horn if the part you told me about isnt available anymore?and it sounds like a match because i dont have an airbag or cruise control.thanks again

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    DaveJHM, November 30, 2010, 21:07
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    Salvage yard parts exist of course, but they may be just as bad as yours. I'm sure you could modify it in another way, but check for the parts first...

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