KA24DET, ISR Kit, Enthalpy tune.
Everything on my kit runs awesome so far. I avoided driving in the rain because it "didn't run right" and due to my schedule I never drive at night so It took me a while to isolate this issue.
- With no accessories on. I idle at 14.5 AFR and everything is fine. WOT at 11-11.5
- Headlights on, it wants to idle at 12 AFR or slowly rise to 13. it also drives really rich and WOT is like 10 AFR.
- Car is affected by the changes, it's not just the gauge. When the headlights are on I can spool but just no pulling, and when they are off I get up and go.
My first thought was alternator (I read this thread
http://zilvia.net/f/showthread.php?t=116171)
At idle my battery is 13.5v and 13.2v when turned off. Doesn't change much when I turn accessories on.
Should I bench test this alternator? Or should I look more into adding grounds to the engine? Thanks
edit: also just took my digital mm and tested continuity from negative of battery throughout the engine bay, got 0 on everything so I think im good there