Abstract Using the time-of-flight technique and narrowband tunable VUV radiation we performed rotationally selective state-to-state photoelectron spectroscopy in the autoionization region between the 2 Π-ionization thresholds of HCl + . With a resolving power of ∼10 5 in the excitation step and an electron energy resolution better than 6 meV for the employed TOF spectrometer, a determination of the fully resolved partial photoelectron yield and the partial angular distribution of the photoelectrons was possible for the Rydberg states of order n =16. Evidence is found for the reassignment of s-resonances to d-resonances.