Re: 4kq idiot light

[harrison <hsapir@multiverse.com>]

I wouldn't take this warning lightly. My 84 4kq displayed the coolant warning
light for 6 months once. The 6 months ended with a blown head gasket.

harrison

Wendell_Gurley@notes.toyota.com wrote:

> You're coolant level is low in the overflow tank.  I'd check for plastic
> disintegration or weepage at the hose underneath.
>
> >A couple of times in the past day I've had the temp light come on(very
> >briefly) under similiar circumstances. Both times happened while
> accelerating
> >through a tight turn(once to the left, once to the right). Symptom is a
> >quick(and on a sustained 180 degree turn uphill not so quick... long
> enough
> >for me to see the flash, look down, see it was temp, then see the light go
> >out, the second time it happened was a freeway on-ramp and I probably
> >wouldn't have seen the flash if I hadn't been looking for it) flash of the
> >light, but no increase in the reading on the temperature gauge(which was
> >reading somewhat below the point where the fan usually kicks in, so I'm
> >pretty sure I wasn't seeing real overheating).
> >
> >So, the questions... are both the temp gauge and the idiot light triggered
> >off the same sensor? Regardless, where is the sensor that triggers the
> idiot
> >light? I'm sort of assuming a wiring disintegration, but has anyone else
> had
> >this happen and found otherwise?
> >
> > -Alex
> > 1971 Volvo 142E        1994 Volvo 944T
> > 1987 Porsche 911 Targa      1986 Audi 4000cs Quattro