Would an increase in expenditures on goods and services without a change in taxes turn an economy around?

Question

How would such a policy change influence equilibrium expenditure?

Answer 1

an increase in spending on goods and services is by defination a turn in an economy and if taxes remained level it would increase monies available for everyone participating in the engine of the economy . as Martha would say :" and that's a good thing "

Answer 2

yes.
and its turn depends on the value of multiplier, multiplier tells the relation between an economies initial investment expenditure and the level of income.