Hi - thanking everyone in advance for any help with this...
I need to know what the thermostat type should be for the 1990 Bonneville SE with the 3800 VIN "C" engine... the usual 180 degree for summer and 195 degree for winter?
It might be an issue, as the gauge never reads any higher than the 1/4 mark; I'm not sure whether it'* a linear gauge, but the lowest temp on the gauge face is 100deg and the highest is 280deg, so it'* reading, like, maybe 140-150deg)
Under normal operation I'm guessing the needle should read somewhere very near the center (straight up, at the "halfway point")
It almost acts like it doesn't HAVE a t'stat in it - and it may in fact have been removed, as this car was previously owned by an older person who only drove in the summer.
FYI, it'* probably obvious the blower doesn't get anything other than kinda-warm air out of the dash vents. I initially thought about the heater core being plugged up, except that couldn't possibly be it since the whole damn system is running cool.