I've been driving my car all week since I fixed (batee) my digital dash and have been noticing a slight stumble sometimes idling and decelerating. Yesterday while at a drive through it happened again when I was at the window and stalled with the Service Engine Soon (SES) light on. I started it immediately and it ran for another minute and stalled. So I left it off until I finished my business and when I started it, it stalled again … and when I restarted it and it jumped to life with a loud pop out the exhaust but it stayed running until I got home.
Checked codes … normal 6-12s
So I started it and left it idling in the driveway for about 10 minutes and it stumbled and stalled again. Immediately checked codes and this time the SES light stayed on! No 12s. I turned the key off and removed the jumper and restarted OK. Let it idle another 20 minutes before it stumbled and stalled again and this time the codes were normal, 6-12s.
Last night I changed out my computer (ECM) with a spare unit on the hope that it would fix the issue. It ran in the driveway for 1/2 hour so I test drove it and it stalled again. Finally got it running again and drove it home.
Today it ran fine in the driveway for 2 solid hours no stumble or stall. Monitored fuel pressure @ 42psi no drops during the whole time. What possibly could be causing this?
After driving it for a day with no issues this morning it stalled and now will not start. Normal codes (6 - 12s) Fuel pressure is 42PSI and would NOT start with starting fluid so that eliminates the fuel injectors as being a problem and I have a no-spark condition!