Simple $\sin(2\pi 1000t)$ Fourier transform in PSpice not behaving as expected
PSPICE is showing the "Double Sided" Spectrum with the assumption (as it is) of a real signal. This means the spectrum is positive frequency axis only and the result will be double of what you would expect to see with a "Single Sided" Spectrum, basically matching the amplitude of the sinusoidal component represented.