I sometimes have 10.9 volts at the coil and sometimes don't. I have changed the MAP , IAC, TFI, and TPS. You can pull the codes manually and only has 81,82 I don't believe these will keep it from starting though. When it cranks it runs very well them within 2 maybe 3 minutes it shuts off and loses power it only cranks over but no start. What do y'all think.