my 1993 grand prix wont start when the temp. drops below zero! it starts just fine when the temp is above zero? i have tried putting feul treatments in to see if it is water but no results still wont start? need help on what it could be?

Welcome to AF. Scan it and make sure the coolant temp sensor reads accurately first, summer blend fuel can cause this also, dirty injectors, poor condition of plugs and wires, lot of possibilities here. Do you mean it will not start or it cranks more than expected, battery turns over strong?, lots of info missing here.

the car turns over really strong just wont ignite not even a little bit only when the temp goes below zero other then that it starts fine. and i just got gass the other day too.

Start with a tune up (plugs, wires, fuel filter minimum). There is less power available from the battery when it gets cold, and the engine requires more spark energy to fire. Old spark plugs have eroded gaps which require more energy to jump across, and old wires have increased resistance which reduces the amount of energy that gets to the plugs. All this will result in a no-start when the temp falls.