Fox-Body Heater Control Question

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Jim C - 06 Dec 2007 16:06 GMT

I have an 89 LX Convertible with no heat. I suspect something between
the temperature control selector and the heater blend door. Is this a
mechanical switch or vacuum actuated? If it's mechanical, I would
suspect the switch, cable, or a linkage along the way. If vacuum, I'd
probably test to make sure vacuum was getting supplied to the right
place. And yes, I have considered the thermostat and or hoses, but
they were all replaced last spring. Could this be a water pump
problem? If so, would it be the only symptom?

Any thoughts are appreciated.

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bob - 06 Dec 2007 19:20 GMT

>I have an 89 LX Convertible with no heat. I suspect something between
> the temperature control selector and the heater blend door. Is this a
[quoted text clipped - 6 lines]
>
> Any thoughts are appreciated.

the wire has slipped off the end of the control wire, passenger side up
behind the radio some.

It is a control wire, with several wraps at the end of it that goes around
about 1/10 inch wire that controles the flap inside the air box.
It used to have a nut cap on it to keep the control wraps on it, but it may
be gone.
So just put the wraps back on the control (thick) wire and it should be good
for a few months.

1989 5.0 and 1993 8# 5.0

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