Cylinder 9 misfire detected on my 5.7 8 cylinder hemi? Wtf

[bhill115]

Anyone ever have a similar issue before?

 

[dsherman26]

Of course you've got a misfire on cylinder 9, it's not firing at all! Sorry, couldn't resist.

 

[diymirage]

Of course you've got a misfire on cylinder 9, it's not firing at all! Sorry, couldn't resist.

It's not supposed to fire, everyone know cylinder 9 is the master brake cylinder

 

[GTyankee]

what brand of ScanTool were you using ?

the p0456 is more likely to be the Purge Valve
I am not positive, but on a 2012 HEMI, i believe that it is almost under the battery/TIPM

After it is removed, there is a simple test to check to see if it is good or bad.
If you can blow backwards through the Purge Valve, it is bad.

There are YouTube videos showing how to check the Purge Valve, whether the Ram is the older 5.7l or the newer

 

[mtofell]

Surprised it didn't throw codes for the muffler bearings and stale air in the tires

 

[Burla]

Just use a different scanner, even go to autozone or a place that reads it for free.

 

[jawzs2]

Did someone do a Viper engine swap?

Your codes are all over the place, I'm with Burla, get a second opinion on the codes. If it's the same, I'd start with checking wiring, electrical circuit connectors, battery condition and such. A tedious process, but cheaper than throwing parts at it.

 

[bhill115]

I wish it was a viper swap. Im using bluetooth scan tool with torque pro app. I also have a plugin foxwell scan tool. I beleive my pcm is toast since it was fine for 3 days and now all these random codes. I was stranded and had to be towed the other day. It felt like trans was slipping and couldn't feel it change from park to any gear. Was stuck in 4 limp mode but wouldnt move at all. Rpms just jumped up and would move a very little, so i didnt want to toast clutches. I checked fluid and is good since changed out the valve body with an upgraded one 2 weeks ago. I also did the selonoid pack and upgraded the filters with steel thread insert instead of the plastic thread junk. I did billet accumulator pistons with a seloniod plate. I also put new bonded plate in valve body. I have a new PCM coming Monday. And def going to switch out the winter air from tires soon

 

[bhill115]

I meant i did the billet accumulator pistons with the upgraded strong backing plate. I also changed out the selonoid pack.

 

[bhill115]

Some pics during change out

 

[bhill115]

Oh and as far as the purge valve code im not so worried so much i did replace the purge valve, gas cap wvap canister. So the code did go off after driving a few cycles last time. I do appreciate the info on how to check them. You guys are super helpful on here.

 

[Burla]

Some pics during change out

nice, you should do a little write up in dyi section after you figure this stuff out. Many people can use a valve body rebuild thread.