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      03-06-2012, 03:24 PM   #123
Private First Class

Drives: '10 C2S, '04 4Runner 4x4 V8
Join Date: Feb 2007
Location: OC, CA

iTrader: (0)

It's frustrating that the engine is clearly misfiring and yet no codes are stored. I'm sure it's like you say where only severe, sustained misfiring is enough to trigger a code.

What I'd like to know is whether or not misfires are logged in the ECU despite not triggering a CEL or storing a code. I'd think this could at least point us in the right direction or maybe narrow down a particular cylinder.

Has anyone ever tried running Techron or some other fuel injector cleaner just to see if it makes a difference?