I'll lay odds you have a blown head gasket or cracked head. You may not be
seeing anything (coolant in oil or vice versa) but I can almost guarantee
that's the issue.
Larry
"David Maucher" > wrote in message
...
>I have a 99 SC2 that started doing this recently as well. I had plenty of
>coolant in the system and in the reservoir (although I would hear some
>gurgling as the engine revved up from a stop; this has been the same for
>over 3 years).
>
> I checked the tranny fluid level, and it was slightly low, so I topped
> that off. Contrary to what reex01 wrote, the function of the light IS
> mentioned in the manual, but you have to look for it under the
> explanations for all the dashboard telltales (it's not listed in the
> manual index). All it says there really is that either you are low on
> coolant and the engine is due to explode, or you are overheating the
> transmission due to driving conditions or low fluid and the tranny is due
> to explode (well, not really, but you get the picture).
>
> But I agree with Barry: if the fluids are good (and this sensor is only
> supposed to pertain to coolant and tranny fluid), the next logical step is
> the sensor acting up. BTW, I got no engine service codes when I hooked up
> a scanner to the connector on the dash.
>
> I have the Saturn service manuals for the 99's (4 big books, covers all
> models) and will look this up further and see what it entails (I'm home
> recupperating, so I can't actually do the work, only read about it.)
>
> Dave
>
>
> "Barry Schnoor" > wrote in message
> ...
>>I recently flushed and filled my coolant system and had the same issue.
>>Bubbles, I suppose, in the system took on more coolant as the bubbles left
>>the system. I just topped it off when I noticed my FULL-Cold line wasn't
>>quite full. Nary a problem since.
>>
>> Otherwise, it might be a sensor issue. Check the obvious first (levels)
>> and proceed from there. Good luck.
>>
>> Barry
>> '94 SL2 167000 miles.
>>
>> "reex01" > wrote in message
>> lkaboutautos.com...
>>> The Temperture and Low coolant lights blink simaltaniously on my 1991
>>> SL1
>>> until the engine gets to normal operating temperture. Then they usually
>>> go
>>> off, but sometimes they will start blinking again. The coolant level is
>>> full (I just flushed the system and refilled to be sure that wasn't the
>>> problem. All other fluids are at the full level. The car is not
>>> overheating (the temp. gauge never goes much past the first mark). Any
>>> idea what is causing these lights to blink? Nothing said about it in the
>>> owners manuel.
>>>
>>
>>
>
>