Great tips posted on this forum but none explained my problem that set several codes such as open circuit on injector 1 and 3, misfire multiple cylinders and misfire cylinder 7. Took it to dealer only to be told that i had a cracked head ($1400 to fix). Gave to local recommended mechanic who found a broken valve spring. replaced spring and bingo! Runs like new again. Hope this helps others as I spent 3 weeks diagnosing.[IMG][/IMG]

2001 Ram 1500
94,000 miles