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Engine misfire

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Hi me again:


I got this 2001 Odessy 125K miles, it was a little eratic on idle and outputed code 300, 302, 305, 1399. So I interchanged coils and checked, got same codes; then changed Spark Plugs and checked, same codes; then I cleaned injectors (all 6) same codes. I'am out of ideas. Need help Please :crazy:


Thanks guys.

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If one coil is bad and you interchanged them, that one coil will still give off that code.


How to check for a bad coil?


I very simply do a drop test, which means running the engine and then one at a time pullling the connector off the coil and putting it back on.


If there is a noticable drop in engine speed then that particular coil is firing. Engine speed remaining the same, cylinder is not firing.


Hope that helps.


If not, sorry I tried.


Good luck.

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