Check engine light popped for an O2 sensor, went to Oriellys to have it
checked, had them clear it and do a batt test while i was there. Then it
wouldn't start. Didnt throw any new codes. Checked for spark across all coil
packs and was good, checked pressure at rail and was good. Battery itself
tested good. But "needs recharge " . This things got me lost. Fuel/spark/air all
present.
Disconnected batt n hooked back up n she fired. Drove it home turned it off n
then no start condition again. Could be faulty crank/cam but i think it would
still try to fire but missfire if it was since I've got spark. Another theory is
maybe the batt tripped pcm when he tested it or caused an internal issue with
battery or causing antitheft to not allow pulse width for the injectors . Im at
the point where an irrational explanation might make the best sense. All input
welcome
What makes this problem better or worse?
Disconnecting the battery
How long has your 1998 Pontiac Bonneville had this problem?
RepairPal Certified shops can diagnose and repair your 1998 Pontiac Bonneville. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
If you have proper fuel pressure and spark it should start. Sounds like an intermittent problem. These issues are hard to diagnose over the internet. You can start with a good scanner and check for cam and crank sensor signal while cranking. Use this link to find a good shop near you.
https://repairpal.com/repair-shops
Alex
Since i got it home i now have no pressure what so ever at the rail.