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Re: Radiator Fan Afterrun
On Tue, 5 Jan 1999 16:23:51 EST, John Katos wrote:
>On my 87 5ktq the electric coolant pump is missing and the radiator fan runs
>for a long time after the car is turned off (after what I am led to believe is
>the couple of minute soak period). I have a new battery, but this morning it
>wasn't powerful enough to start the car (-16 degF). How can I diable the
>afterrun radiator system or at least shorten it by 3/4?
Please ignore my previous post on this. I hadn't had enough coffee yet.
If the pump is missing, then no cooling happens and the thermoswitch
continues to let the fan know about it for a long time. You really
should consider replacing the pump as soon as you are able.
This brings up a related issue. Some folks experienceing long after-run
cooling times may have a faulty pump without realizing it. One common
failure mode for the auxiliary cooling pump is that the impeller siezes
and the motor continues to run (the coupling is magnetic, I believe, not
direct). You can check whether water is actually being circulated by
pinching off the hoses with your fingers and feeling whether water is
moving while the pump is running.
DeWitt Harrison
Boulder, CO
88 5kcstq