bg552

Been having this problem for the past 2 months now and havent been able to drive the car for fear of getting stranded. Most of the time, the car will start and run normally for 10 minutes or more. During this time, the car runs flawlessly (no miss, rough idle or anything). At some point after that, the engine will completely quit without any sort of warning. Sometimes it will start back up and run fine, then quit again the same way, or it wont start back up at all. Had it out the other day, it lost power, backfired, regained power and then stalled a minute later. Where do i go next trying to track down this issue. I have already replaced:

- Optispark distributor (cap and rotor looked fine and were not replaced)
- Spark Coil
- Ignition Control Module
- O2 Sensors

Someone please point me in the right direction as to what to do next...thanks

bg552

Also, is there any way that this could possibly be linked to the fuel pump?

OBE1 95Z28

Igntion switches have been known to go bad. Do all you dash lights go out when it dies?

bg552

No the check gauges light stays on...

bg552

Checked it last night after i had problems again and there was no spark at the coil whatsoever...anybody? please help this is ridiculoous

Guest47904

Do you have a problem when it goes into closed loop?

Try unplugging one of the O2s and see if it runs better when it trys to go into closed loop. You will know for sure it tried to go to closed loop when the SES trips.