cylinders two and four not firing

2011 DODGE CHARGER

158,000 MILES

GREENPIG1

MEMBER
1 POST

I have replaced all coil and plugs also all o2 sensors crank and cam all cylinders deactivation sensors and intake gaskets fuel pump and injectors and still have no "fire" in cylinders 2 and 4. any ideas why? thanks in advance.

Mar 9, 2021 at 5:02 PM

KASEKENNY

✓ASE Certified Mechanic
18,907 POSTS

Which engine do you have? The 3.6L or Hemi?

We need to check voltage at the coil on the coil control circuit. Each coil is controlled separately from the PCM.

So we need to find out if the PCM is commanding these coils on and it does this by grounding the coil so that it can fire.

https://www.2carpros.com/articles/how-to-check-wiring

Let us know if you have questions but we need to start with this as the most likely cause is the PCM.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Mar 10, 2021 at 5:40 PM