Code P0203, winter-readiness, and two electrical gremlins. Ron opens with a 2015 Jeep Wrangler 3.6L that set P0303 (misfire) and P0203 (injector circuit). He walks through smart diagnostics: verify injector resistance against known-good cylinders, check the circuit from PCM to injector, then confirm with a scope or a swap test—because a component can ohm “good” cold and fail hot. From there, he pivots to fall-and-winter driving prep in response to an RV-fire traffic shutdown: fuel up, pack essentials, and plan for long, no-exit stretches. Classic-iron detour: documenting a ’67 Chevy II Nova (VIN/cowl tag and build sheet beat a window sticker). Then it’s a ’96 Olds Aurora with a fickle charge (don’t trust the dash—test the alternator feed and wiring) and an ’09 Escape no-crank likely flirting with anti-theft/steering-lock issues.

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