Re: Cooling fans staying on

["Dave Swingle" <dswingle@xxxx>]

--- In dmcnews@xxxxxxxxxxx, "Ryan McCaffrey" <ryanjm@xxxx> wrote:
> A quick search of the archives yielded plenty of messages about 
cooling fans
> *not* coming on, but mine are staying on. From the moment I start 
the car
> until the moment I turn it off, the fans are constantly on

Start with the obvious. Has it always done this (i.e. as long as you 
have owned the car)? I've seen more than a few of these where people 
have hard-wired the fans to stay on all the time. Normally this 
involves jumping the hot-switch (otterstat) but there are many 
places to do it. For a while it was popular to wire the rear defrost 
switch to turn the fans on! (I don't need no stinkin' rear 
defroster!). 

If it spontaneously occurred, look for a bad otterstat or a stuck fan 
relay. To check, unplug the 'stat (in the water pipe to the left of 
the engine). Still on? Unplug the fan relay. 

The fans are also turned on via the relay thru a diode in parallel 
with the A/C compressor as it cycles on and off, but that does not 
sound like your problem. It's not a very complex circuit. I'd vote 
for the 'stat. 

Dave Swingle