How can I tell if my 1990 SC is over heating beside going by the stock temp gauge.Reason is, I cracked one of my heads and blow my head gasket but my temp gauge has never went past M as in NORM.......( C<<<<NORM>>>>H ) on my temp gauge.When I'm driving it usally runs between the R and M depend if at light or not. Also I do not know if my low fan is coming on because if I let it run in the driveway the gauge reads M and still no fan.And even after I redid my heads and head gasket it's still runs at the same temp.So plz before I spend any more money could someone plz help me.And if my fans are not working could I bypass the relay or put the fans on a touge switch..Like I said SEND HELP PLZ where do i start.
THNX
THNX