So my blazer will run like a million bucks for like 3-5 days. Then I will go to start it and it will act like its going to start but then just stall out and not start again. I have been able to get it going again with starting fluid usually but I tried this most recent occurence and it tries to start but dies right out. I have replaced the "spider injection"system, fuel filter, I have checked the fuel pressure and it is 65psi holding steady.And it is getting spark. Also my data connector wont connect. So if anyone has something that can help it would be greatly appreciated.

Thanks -pblaze-