Persistent Misfire cylinder 3

[Nap73]

Just got home from My 2nd drive to NY today.

All in All I drove 180 miles and was on the road 5 hrs. Not one code or pending code and I checked several times.It’s safe to say the harness was causing My misfire.

The Chariot is running beautifully.

All is good in the world.




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[Sam Harris]

Hell yeah! Glad to hear it.

 

[2017 yukon slt]

What’s up guys

Need some help here

About 2 months ago I had a misfire in cylinder 3 with a flashing check engine light

I replaced the ignition coil and it immediately fixed the issue. I then went ahead and changed all the plugs and wires.

Now the 2 days ago about 45 min into an hour drive and I get another cylinder 3 misfire code P0353 solid check engine light and 2 pending codes P0303 & P0353. The mechanic cleared the codes and I went about my business.

Then yesterday I’m taking another hour plus drive and I get a flashing check engine light that stops about 3 mins after it starts. And I have 2 new pending codes P0303 & P0353. Light goes off and never comes back on. I clear the pending codes

I go to the mechanic today and he moves the coil from cylinder 3 (the one that was changed ) and exchanges it with the cylinder 1 coil. Now driving I get the same pending codes again P0303 & P0353.

What do you guys think ??

Any assistance or comments are appreciated.





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Had the same issue on my 2017 yukon slt now I'm out $1000 to replace fuel injector #6 cleaning was first option that set me back $200 from the dealer, then check engine light back on the next week, dealer advised #6 was not spraying at all. From what I've read there are Yukons and Escapades with same issue. I only have 53000 miles no good vehicle should should out a owner out of pocket with low miles. Never had an issue with my Toyota Sequoia and it had 300k