88 5kcstq coolant warning problem (neither sensor!)
Huw Powell
audi at humanspeakers.com
Mon Apr 19 23:57:18 EDT 2004
> My '88 5kcstq is flashing the coolant warning light. Problem is,
> when I disconnect both the expansion tank level sensor and
> multi-function temp sensor, the warning doesn't go away.
>
> My understanding is that those are the only two sensors that can
> cause the warning light to come on, and that by disconnecting them
> the system should default to no signal. The expansion tank is closed
> to ground when the tank is low, and the overheat signal is also
> closed to ground. So by unplugging both, I should not have the
> flashing light.
>
> What am I missing?
A shorted wire in one of those circuits?
--
Huw Powell
http://www.humanspeakers.com/audi
http://www.humanthoughts.org/
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