No wiring problem. I was saying that because of the load on electrical.casperfun wrote: ↑Fri Nov 20, 2020 11:06 pmDon’t know why battery, amp, or hid would have anything to do with a misfire. Unless wiring problems.
I think something was damaged because of the collision. Your rogue is not that old.
Maybe crash caused a vacuum leak somewhere.
Dirty Mass airflow sensor? Throttle?
O2 sensor damaged perhaps, exhaust system?
Failed head gasket, timing chain got loose.
Cleared the code? That’s pretty stupid if they didn’t fix it. Go figure, out of sight, out of mind. They are useless.
Take it to another dealership, this will need some tedious automotive detective work for sure.
I did test with red on engine block and black on battery terminal. I was reading ranging from 0.0 to 0.4 some random time 10 or so.VStar650CL wrote: ↑Sat Nov 21, 2020 7:28 amNothing in that vicinity that could cause a misfire except the ground cable.
mV i kept the meter in 200 mV range settingVStar650CL wrote: ↑Sat Nov 21, 2020 6:33 pmPPS - It just occurred to me, is that on a millivolt (mV) scale or a volt (V) scale? If it's mV then the bouncy reading is a little weird but the levels are okay. If it's 0.4V then there's trouble.
I didn't yet. I have to get some tools to do so. Thinking of taking to dealer again. But will try taking the plugs.VStar650CL wrote: ↑Mon Nov 23, 2020 9:03 amIt's possible, although the mostly-when-cold behavior kind of contraindicates that. Thinking about it, that could indicate a head gasket problem. Have you had the plugs out of it? If not, pull them and use a pencil flashlight to look at the piston crowns. If you find one or two crowns much cleaner than the others, you probably have a weeping head gasket that only leaks into the cylinder after the car is shut down when the hot block cooks the coolant. Then when you restart later, the engine misfires until the coolant is ejected. If one plug is much blacker than the others, you could have a leaky injector that's dripping into the cylinder when the car is shut down. On restart the plug fouls until the extra fuel is ejected. Either way, yanking the plugs may tell you a lot.