Fans running immediately

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K-town - 21 Oct 2004 04:03 GMT

On my wife's 1986 Acura Legend, the cooling fan AND condenser fan switch on
the instant I turn the key to the ON position. (Position II) Of course,
this is BEFORE I actually start it. Upon starting the engine, the fans
continue to run. BTW, the engine is COLD at this point. If it were still
hot, I wouldn't be posting this question. ;-) Is this happening due to a
bad relay in the fans? Or could it be a bad temperature sensor? Anything
else possible? Also, I had to pull the fuse for the condenser fan, as it is
making a horrible, loud racket. Sounds like something inside the fan's
motor is rubbing, or needs lubrication. Is this possible, or does the fan
just need to be replaced?

If anyone can answer these 2 questions, I would really appreciate it. :-)

Thanx in advance!

Jonathan

P.S. I told my wife NOT to use the A/C while the fuse for the condenser fan
is out. The radiator fan's fuse is still in place, and functioning,
although even upon cold starting, as I said above...

P.P.S. All interior controls are OFF at time of start. A/C button is NOT
pressed, inside vent fan is switched OFF, etc.

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Randolph - 21 Oct 2004 05:35 GMT

I know that the Accord from that time period had the condenser fan and
the radiator fan connected in parallel, so they would either both be on
or both be off. If this is the case with your Legend, it could be as
simple as the thermo switch having failed closed. To test this theory,
unplug the connector from the thermo switch and turn on your ignition.
If the fans don't run, you have diagnosed a bad thermo switch. I believe
that vintage Accord had the thermo switch mounted at the bottom of the
radiator, don't know about the Legend. It would be the only electric
piece attached to the radiator, and it has two wires going to it.

> On my wife's 1986 Acura Legend, the cooling fan AND condenser fan switch on
> the instant I turn the key to the ON position. (Position II) Of course,
[quoted text clipped - 19 lines]
> P.P.S. All interior controls are OFF at time of start. A/C button is NOT
> pressed, inside vent fan is switched OFF, etc.

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K-town - 22 Oct 2004 01:06 GMT

Thanks, I have a Haynes manual for the Legend, so I'll find it. Do you (or
anyone else) know about about what's causing the condenser fan to make that
loud racket? It's like a groaning / roaring type sound...?

Jonathan

>I know that the Accord from that time period had the condenser fan and
> the radiator fan connected in parallel, so they would either both be on
[quoted text clipped - 38 lines]
>> NOT
>> pressed, inside vent fan is switched OFF, etc.

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