2010 Dodge Avenger 2.4L disabling Injectors

I have a problem child that has been beating me up, a little bit, for the last couple days. 2010 Dodge Avenger 2.4L. The car came in with a customer complaint of loss of power. Stored Codes were P0355 and P0300. I scope Cams and Crank. They looked okay. I cleared codes and went for a test drive. As I was driving, the CEL started flashing. P0300. I could not feel it. I kept driving. After a 30 seconds, or so, I felt a "change" in power. I, still, could not feel a misfire. I pulled over and as I slowed to a stop, I could now feel the engine misfiring, terribly. I back probed the coils and injectors, there on the side of the road, as it was misfiring. All coils were firing but, injectors #1 and #4 were not firing. I turned off the ignition and restarted. No misfire. As I started back down the road, the CEL started flashing, again. And, the cycle repeated. Maintaining speed during the "Change" in power, the ride is nice and smooth, albeit RPM's a little high. Running on two cylinders. It's not until slowing down to, nearly, stopped and idle that I can FEEL the misfires due to the injectors being disabled.

Seeing that the injectors are being disable, I started looking closely at the Coil voltage. While power-braking, I could see Secondary fouling. Current ramps looked good, so I pulled the Spark Plugs. They looked to be original. (180,000 miles +). The gaps were at .085 - .090. Spec is .043. I put new plugs in. And, even though current ramps looked good and voltage was spiking near 400V, I replaced the Coils, as well. Now, while Power-Braking, Secondary, (as seen through Primary), looked great. I thought, to myself, "This is a fix." I went out for a Test Drive. Same thing as last test drive. The CEL started to flash, although no noticeable misfire was taking place. Then, a "Change" of Power. Injectors #1 and #4 disabled. Cycle the ignition, and repeat.

I looked at the misfire counter on the Verus and with eScan Mode$06. At idle, all is good. But, raise the idle, just a little bit, and misfires start counting on Cylinders #1 and #4, even though nothing is felt, or detected in any way. I scoped the Crank, again, and applied a Frequency Math Channel. With the Math channel, I was able to spot some glitches and dropouts in the crank signal. With the engine running, I reached in and did a "wiggle" test of the crank sensor. The engine stalled. I started it back up. Wiggled the crank sensor, again. It stalled, again. New, Mopar sensor installed. Engine Running, I reach in and "wiggle" test the sensor. I can not get it to stall. I think, to myself, "This is a fix." I go out on a Test Drive. Same as before. Light starts flashing, Injectors disabled.

Back in the shop, I sit there and watch the misfires count up on Cylinders #1 and #4, any time the RPM's are raised off of idle, even though I can not detect a misfire. Nothing is felt, or heard. Crank Frequency look has 4, equal, accelerations Per 720° of Crank rotation and the misfire keep counting.

I don't know much about Cam Phasing, but I don't see much happening, there.

I'm stuck. Out of ideas. I'm looking for a new/fresh perspective. If anyone has any hints, ideas, or suggestions, I would love to hear them.

I can, and will be happy to, post any waveforms, or scan data requested.

Thanks for reading my long-winded request.


Here is a link to the associated .psdata files.:

drive.google.com/drive/folders/1GoxAdW25...k2ZmrsLW?usp=sharing

Does icm control injector firing or pcm with your case?
Did you use noid lights to see if they flashed with injectors unpluged?
Are they group fired or individually fired (bad driver circuit)?
Have you ohmed injectors when cold and when hot?

Could you please upload the cam /crank waveforms, if possible with the injectors' signal as well. A capture showing "before" and "while" failing might be helpful.

juergen.scholl wrote: Could you please upload the cam /crank waveforms, if possible with the injectors' signal as well. A capture showing "before" and "while" failing might be helpful.

Here is at idle:

drive.google.com/file/d/15gU5QNZYczmEEmM...V1G/view?usp=sharing

Here is 1800 /- RPM with CEL Flashing:https:

drive.google.com/file/d/1x1H6wscH4iCGGCp...gkw/view?usp=sharing

I've updated the original post to contain a link to all the .psdata files.

Here it is, again.

drive.google.com/drive/folders/1GoxAdW25...k2ZmrsLW?usp=sharing

CKP sync position looks "off" relative to the ignition events. On this one for #4 spark is firing ~60* before sync. I'd expect sync to be at TDC and 60* of ignition advance doesn't sound right. Seems like maybe sync is occurring ATDC and the PCM is interpreting the sync as the crank slowing during the power stroke. The BIG hole in this theory is you'd expect the PCM to pop some kind of CKP code if the sync notch is out of time.....



Also what is the firing order on this thing? This trace shows #1 firing 120* after CKP sync??????

Firing order is 1-3-4-2.
There was one, or two, waveforms that were saved with the Sync cylinder mis-labled. IF I remember, correctly, a #3 sync was labeled as #4. I have captured and saved so many waves, that I don't know which one(s) were mis-labeled. I can re-capture anything that is in question.

My lastest captures have been concentrating on the injectors firing. Cylinders #1 and #4 fire injectors at the Crank sync notch. I am seeing injectors fire when they shouldn't be firing, but I cannot see anything in the Crank signal that would be the cause.

This image has an "extra little green firing event". I find these "sprinkled" all over the place.

Hardtopdr2 wrote: Does icm control injector firing or pcm with your case?
Did you use noid lights to see if they flashed with injectors unpluged?
Are they group fired or individually fired (bad driver circuit)?
Have you ohmed injectors when cold and when hot?

My apologies, Hardtopdr2. :oops: I just saw your post. I don't know how I missed it.

The PCM Controls the injectors, individually. All injectors Ohmed out at 12.9 - 13.1Ohms.

Okay. The lesson for the day is RESET YOUR ADAPTIVES!

I looked for, but could not find a Crank Variation Relearn procedure in the Verus. I went back and looked, again. I did find "Reset All Adaptives".

All is good!


...two days, plus. SMH! :blush:

I had the same exact issue a few months ago the . crank sensor pigtail stalling when wiggling. I’m sorry but every Chrysler I do a memory reset of all adaptives just Been burnt to many times

Awwww man, I missed out on all the excitement!

Tyler wrote: Awwww man, I missed out on all the excitement!

You would have been a welcomed addition to the party!

Hi I know this has been fixed a year ago but I have the same problem for my 2008 Dodge Avenger everything is fine at startup but giving it gas a little bit and cylinder #1 and #4 stops working engine is shaking and misfireing i'd like to know what you did i'm a little disoriented as i'm French

He changed the crankshaft position sensor and then reset all adaptive (learned) values.