Re: after-run fan switch (more)

[Brett Dikeman <brett@pdikeman.ne.mediaone.net>]

>problem:  i suspected that there was a malfunction with my after-run fan
>when i had to keep occasionally jumping my car.  (i just installed a new
>alternator last week, it was smoked).  the fan, when it would come on
>(will on fun when the engine is truly warm, not just everytime i shut
>the car off), would run for the full 15 minutes (i am correct in
>thinking that there is a safety mechanism that shuts the fan off at this
>point in time?).  i was emailed by someone with a similar problem, and
>told that the problem was a thermoswitch located at the bottom of the
>radiator.  so i went to order this part, and the guy told me that he
>needed some color codes.  well, i couldn't find the switch, so i brought
>it in for him to look at.  he went to a switch which inserts into the
>head of the engine block, towards the back ,at a point where a radiator
>hose also inserts.  he said this was the switch, and if the fan was
>running in after run mode and i pulled the wire, the fan should stop.
>so i did this and the fan did not stop.  i suspect either 1)this is not
>the after run switch (when i was hooking it back up i thought i heard a
>few quick bursts from the injector cooling fan, could have been
>coincidental), or that i have another probelm.  help please.  tia
The injector coolant fan is at the rear, screwed into a piece of sheet
metal, not in the coolant path(it senses underhood temps.)

The after-run sensor is in the coolant stream, hangs upside down, right
near the multifunction one(upside down, front, big connector covered by
large boot, 4 position connector), and has two blade connectors.  Shorting
the terminals(NOT to ground, as I discovered!) to each other(ie, with a
screwdriver, will cause the rad. fan and coolant pump(impossible to hear)
to run.

There is nothing to keep the fan(s)/pump from draining the battery if a
sensor gets stuck.

Brett

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Brett Dikeman
brett@pdikeman.ne.mediaone.net
~)-|
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Te audire non possum.  Musa sapientum fixa est in aure.
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