87 bmw engine flood and overload, Can anyone help with this? on 1990 BMW 325is

'87 bmw enigine sometimes overloads and floods with gas, We have to bmw's doing this and are needing any help on geting the problem fixed ASAP

Asked by for the 1990 BMW 325is
Need to check the fuel injection sensors, like the the engine coolant temperature sensor and then the mass air flow sensor, at least as a beginning.
Where can the snsors be located at? We are having trouble finding them,