MISFIRE
MISFIRE
07-14-2020, 01:05 PM
#2
diagnostics will tell you exactly what's wrong - the coil packs die all day long....
move to a different plug the codes will go to the new location so must be the coil... 15 mins work
move to a different plug the codes will go to the new location so must be the coil... 15 mins work
07-14-2020, 04:22 PM
#3
Super Member
Yes. Bad, clogged, or stuck fuel injectors can do it also, or one or more a bad injector O-rings. Misfire is not always spark related. In fact, I have a shop pulling and flushing my injectors now for misfire codes, and it's not the coil packs or plugs (or the voltage converter either).
07-14-2020, 05:36 PM
#4
Super Member
Join Date: Dec 2018
Location: Washington, DC
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2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, and 2017 Mustang GT, and just got a 2023 300C
I get a transient P0300 with a P1170 and a P0422 mostly when I use discount gas with less than 92 octane. Engine runs fine but she will throw those codes and set a yellow check engine light. If I use a bottle of Techron and brand name premium gas, the CEL turns off. I can also simply clear the codes but they will come back the next time the gas is crappy.
