94 Blazer The dEVIl cant figure it out??
 

So i have replaced fpr harness and yet still havnpg problems.. Now it will run for a bit then die and not start for some time.. If let sit over night will start in the morn but takes awhile like it is trying too build up pressure like the 10th turn of the key it seems like it gets pressure up there.. but have checked pressure and pressure is fine maybe too much any advice or help would be greatly appreciated Thanks PJ

Well what pressure are you getting that is good pressure? What does the gauge read? Any engine codes? Any other information that will help us out?

Yeah, like what engine? V-6? Is it a Vortec (Code W)? What is the pressure with key on - engine not started, then key off and leakdown rate. The devil is an idiot anyway. But he probably has a lot more info on you truck than we do to help you out. Reading any codes? I've got factory manuals on a 94 but inquiring minds want to know a little more. What's it doing and what is it not?