Hey guys, I was wondering if any of you had this trouble. I have a 2000 XJ, 54,000 miles on it. It starts fine when it's cold but won't start when it's at operating temp. I took it to the local mechanic to check the engine code but it's not getting power to the obd port so I can not check what's wrong with it from there. I ordered a new fuel pump thinking it is that but now reading here and there I'm thinking it might be a o2 sensor. Any help would be super.
Just for giggles I changed the plugs but on luck with that.

 

Any ideas??