Hey guys, a couple of weeks ago I posted where my gn started running really bad and the scanmaster showed ------- and later a code 42. There was a vac. hose sprung a bad leak, I fixed it and at first it didn't run much better but after a couple of days and resetting the ecm 2 times it ran ok with no codes. Since then I've only driven it a couple of times but it ran normal. Well!! today I drove it to town, about 5 miles, it ran great there and I had to go to about 2 different places and it still ran great. I made a stop at the dollar store and when I came out and started it , it ran crappy again. It would hardly idle and did die on me once, the scan master was showing zero's on almost everything. IAC's TPS,CC was doing nothing. The check engine light was flashing off and on steadly. I started home and barely made it, the farther I went the worse it ran. When I did get home it barely made it into the driveway. What do you guys think?? I have never checked/fixed the grounds on the head, do you think that would do it?? Oh yeah! the battery voltage on the sm was showing 0 also. Seems like the ecm was not getting power. About 5 hours later I started the car and all seemed well again. I didn't drive it but it idled good and sm seemed ok. What do you think.