This paper is concerned with speech enhancement using Phase-Error based Filters (PEF) and Excitation Source (ES) information in car environments. For this purpose, we firstly use ES information to determine the time-delay from speech signals obtained by two microphones for sound source localization. Then, the phase-error based filters are performed by prior knowledge regarding the time delay obtained by ES information and the phases of the signals recorded by the microphones. The experimental results showed the effectiveness of the presented method for speech enhancement.