P0344 limp mode

[Gator Whiskers]

It could be mechanical.

Yeah, I'm afraid that it might be...
I also saw that the control valve for the vvt can trip a P0344 code, but I don't know how to isolate that component for testing.

 

[PowersOf12]

My misfire #8 was bad lifter and cam lobe confirmed by dodge last week. The tick went from intermittent to a tick and a chirp to a louder tick to a tick that never went away to a check engine light over 4000 miles (and two different oil changes chasing the sound). When the misfire code was on, the truck would no longer go into 4 cylinder mode (maybe this is limp mode). Just an FYI (I am spreading my knowledge because my neighbors 2013 did similar and I know every single mile put on my truck since I custom ordered it in 2012.

 

[Gator Whiskers]

UPDATE: I finally got some time today to play in the garage. I pulled the Camshaft Position Sensor, and the tip of it was all fouled up by some kind of grey..... something.
Almost seems like it was moly grease?

Any ideas?

I bought a $20 Standard brand one and put that in while I wait for the OEM one to get here from Mopar

 

[Wild one]

UPDATE: I finally got some time today to play in the garage. I pulled the Camshaft Position Sensor, and the tip of it was all fouled up by some kind of grey..... something.
Almost seems like it was moly grease?
View attachment 523822
Any ideas?
View attachment 523823
I bought a $20 Standard brand one and put that in while I wait for the OEM one to get here from Mopar

Anytime i've ever ran into gray sludge that looks like that,somethings usually starting to go south inside the engine. In a hemi it's usually an indicator the cam and lifters are starting to go south. Just my 02,but i wouldn't be surprised if you start to have cam issues in another few thousand miles.

 

[Gator Whiskers]

Anytime i've ever ran into gray sludge that looks like that,somethings usually starting to go south inside the engine. In a hemi it's usually an indicator the cam and lifters are starting to go south. Just my 02,but i wouldn't be surprised if you start to have cam issues in another few thousand miles.

Awesome. lol

 

[Gator Whiskers]

UPDATE:
I put replaced the cam/crank position sensors with OEM ones and that seems to have cured the P0344/limp mode issue.
Replaced all of the spark plugs with the NGK ones that are the OEM recomended plugs and did a compression test on 1,3,5,7 while changing them.
1: 145
3: 125
5: 135
7: 130 (these are averages of 3 checks each)
#3 still misses under load usually around 2,200 rpm depending on how hard I'm stepping on it.
I can't tear into it more than that because my garage door won't close with the truck pulled in..... so......
it's going to the dodge place this Friday and let them mess with it.
I'll do a new post with what they find.

 

[cammed]

hope it all works out for you

 

[Sherman Bird]

Update: I got a misfire on the way home during medium accelleration, and it stayed with #3.....
So either the plugs are toast, or it's a trashed cam
A buddy at work is bring his compression tester tomorrow for me to borrow <-Hey! That rhymes!

You're a poet!

 

[Gator Whiskers]

You're a poet!

and I didn't even realize it!

 

[Kettenhund]

Gator, did you get this resolved? I am fighting a similar battle with a Gen 3.