My car thinks that the coolant is low

[Mark L. Chang]

Sounds like your car has a multifunction temperature sensor that has gone
bad. On my 90q20v, this MFTS does three things (I've been told): overheat,
low coolant, and analog guage on your dash. So, it can fail three ways (or
so I've been told).

I had mine replaced last October and it's dead again. It seems that there
was a bad batch, as it's not just me.

On Sun, 14 Jan 2001, Phil Strong wrote:

> After driving for almost 2 hours yesterday in my 89 80Q, the low coolant
> light came on.  Pulled over, checked the coolant level and it might of been
> just a tad low, so I added some more antifreeze/water and finished up the
> last 20 miles of my trip.  The low coolant light still was on so drove
> moderate the rest of the way.
> 
> I checked the coolant level again this morning and it seemed fine.  But
> within 30 seconds of starting the car when the engine is either warm or
> cold, the low coolant light comes on.  The car seemed to warm up as ussual,
> but I decided that it would be a bad idea if I went for a driving test to
> ckeck it out.
> 
> What's the deal here?  The coolant level is fine in the reservoir... so why
> does the autocheck light come on saying that the coolant is low?  Is it
> possible that the water pump died?  How do I check for this without risking
> damaging my car?
> 
> Phil
> 
> 

--
                               To have no errors
                               Would be life without meaning
                               No struggle, no joy
                               -- Brian M. Porter