Well, sometimes a long project just ends up running away from you...
I was chasing the cause of a P1126 and P1133 codes, which had me go down a rabbit hole of replacing the upper AOS vent line. For those that haven't had the misery of replacing this line, it pretty much requires the R&R of the intake manifolds. While I was in there, I also replaced the oil fill tubes (after breaking some plastic). This required unbolting the alternator, however it connected. I reconnected everything else, and felt good about getting vacuum.
I get on the road, car feels fine, but get right back up to +20% LTFT, so whatever the actual cause of those max enrichment codes was not resolved. After the battery reset, the trim was starting to come up at speed, so I'm thinking I may need to start looking at fuel delivery as a possible culprit. Anyways, that's where I would have started until...
I come back from the 20 min test drive and idle for 5 minutes. I turn the car off, and then key back on with but no starter turn. After a few more attempts, I get the awesome smell of electrical smoke. Pop the rear trunk and a good amount of smoke is swirling around. I pull the liner and find this ground on the firewall totally toasted.
Any takers on what I messed up when putting everything back together? Feeling like that poor ground took the current when I tried to restart - but strange I had no problems on the drive or first start.
Things I removed/replaced during the top engine work:
- Both manifolds
- RH Injector and coil harness connections
- Crankcase vent valve
- The ground and harness brkt near the crankcase vent valve
- The starter cable at the starter to access the oil fill tube bolts
- Oil fill tube from crankcase to firewall