Got P050d since one week on cold start
I log misfire and seems to be cylinder3
Youtube and some gm forums are telling this is the injector with is double pulse mode to help fire the catalytic converter
Ecm20209 in injectors section can disable it.
Do you think if i disable it it will solve the trouble ?
Misfire only occur during cold start cranking
And section 20209 is split pulse crank
Or if disable it, will i lost anything else ?
Any help ?
You have an injector that is not flowing correctly during the cold start double pulse injection event.
This is a mechanical/electrical issue with the injector itself, changing the tables in your ECM will not fix it. You need to replace the injector that is misfiring cold, which should show in the freeze frame data. If money is not an object, replace all the injectors as they will all go at some point. Use the nominal flow injectors to keep your trims happy too, don't mix and match.
Thanks for the fast answer
On scan,
Its #3
No freeze frames...
Oem one of replacement ?Originally Posted by cadillactech
Oem will fail again in 50000miles
The new part number from GM seem to last longer than that but there isn't much available from the aftermarket in terms of DI injectors anyway so you are best off with an OEM replacment.
Seconded that this is just a bad injector and should be replaced.
Do you have the part #
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