He said he swaped with another...
Josh Battles wrote:
> On Tue, January 17, 2006 6:33 pm, david.clement@verizon.net wrote:
>
>>My wife's PT cruiser has been setting code P0304 (mis-fire cylinder #4). If I
>>clear the code it will come back in 2 or 3 days. It's not impacting the way
>>the
>>car runs in any noticiable way.
>>
>>Since the car was due for new plugs I figured that would be a good place to
>>start no sets code. I thought maybe I had a wire going bad so I swapped wires
>>for cylinder 1 & 4 to see if the code would move to cylinder #1 (P0304), nope
>>still P0304.
>>
>>My question is how does the ecm sense that there has been a mis-fire? Is it
>>strikely looking to see if there has been a spark or is it looking for some
>>sort of change in rotationaly speed of the crank that would indicate the
>>mixture did not ignite (i.e. bad injector). I begining to think it might be
>>an
>>injector issue but don't want to did that far into it unless I know that the
>>ecm could sense this.
>>
>>I am past the 3/36 bumper to bumper warranty and into the 7/70 power train
>>emissions warranty which I belive would cover this but with a deductable. If
>>it's as simple as a new injector (about $45) I will do it myself.
>
>
> Have you pulled the plugs? What does the #4 look like? I'd probably replace
> the plugs just to see what happens and go from there.
>
> turbo?
>
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