It also sounds like your gauge or your temperature sensor is acting up (very common in e30's, e34's, e28's).
BEAUTIFUL 750! I hope to own one in the future.
www.enthusiastauto.caContact if you are looking for a car
--2000 BMW ///M5 .:Jet Black on Black:. Individual - Style 65 Wheels; 9.5" Square Set up;275 Tires;10mm/3mm Spacers; Black Kidneys;Muffler Delete; 3.5" Dual Tips; Beast Power Sway Brackets; "Dinan" Ducts; E60 SSK; BC Coils
--2000 BMW ///M5 .:Avus Blue on Grey/Black:. '01 Exterior Upgrades; E60 SSK