I'm looking for faculty positions. How important is it to have your PhD advisor's letter after 3 year post-doc? Like the title said, I'm applying for faculty positions. I am finishing a 3 year post-doc. I have strong support from my post-doc advisor and other profs we collaborated with. I have no problem getting three solid references. I've always struggled with my PhD advisor though. He was once important in the field, but he rarely publishes peer-reviewed research lately. I actually got my post-doc without his letter. 

I'm considering applying without his letter to faculty positions. Anybody have similar experiences or advice? I'm baffled by my problems with my PhD advisor. I actually did publish with him, and even won awards.
Unless your former advisor can speak to your present and future research potential (especially funding potential), his letter won't add anything that your post doc references won't already say. At a certain point, prospective employers want to see that you have become an independent researcher, and a letter from a doctoral advisor might give the wrong impression.