[Universal]

First of all its a wrong section.

Secondly you should use gettime() and assign it to players variable (can be SetPVarInt), then when he tries to turn/shut the engine check if the specified time has passed.

pawn Код:

SetPVarInt(playerid, "Time", gettime() + 5); // <--- 5 seconds

//---

if(gettime() > GetPVarInt(playerid, "Time"))
//do the code