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  1. Hemi - Misfire Cylinder #6

    2nd Generation Chrysler 300 Discussion
    Ok, this is one for the record and the pros... Very well maintained, 130k reached and... PO306 - Misfire on Cyl #6 . (one of 4 MDS cylinders) I swap the coil with another cylinder. No change. - Coil eliminated. It goes to the shop. Change fuel injector - No change. Fuel injector...
  2. 2005 Chrysler 300c 5.7 mds problem?

    General Discussion on Issues / Trouble Shooting
    Hello everyone i'm Franck, I have a problem with my 2005 chrysler 300c. I have bought recently a diablosport trinity, idk if its a coincidence but yesterday my car act weird. I think is the mds because on the highway i have the same loud sound that when the mds goes one before (i have a...
  3. White smoke upon exiting fuel saver mode

    General Discussion on Issues / Trouble Shooting
    I'm getting significant white exhaust smoke (the warmer the engine the more the smoke) when the engine goes from fuel saver mode to full displacement. I've just completed changing piston and rings in cylinder #6 after a Multiple Displacement Solenoid (MDS) failure due to mechanic using the...
  4. MDS System

    General Discussion on Issues / Trouble Shooting
    Has anyone had issues with the MDS system. My 05 300C runs rough at constant throttle but when you ever so slightly increase throttle, it smoths out. Happens at 30 mph through 70 mph. Thinking it may be an issue with cylinder deactivation. Thoughts? Thank you in advance. PS engine will...
  5. MDS Options

    UK & Europe Regional Forum
    I have seen a few threads on the MDS system the Hemi 5.7 and how to disable it: I have read a mixed review on changing the viscosity/type of oil, I assume not everyone gets the same results down to ambient temperatures and driving conditions, i.e. a lot of short journeys will see the oil...
  6. Newly purchased 2007 300C

    General Discussion
    I just recently purchased a 2007 300C. Just curious if the 5.7L Hemi has MDS? Do all 300Cs come with this? Also, what would be the first thing you would upgrade with this car?
  7. EVIC MDS indicator hack for '05-'06 300C???

    Performance General Discussion
    Hello everybody, I have been tirelessly searching for a hack or mod allowing me to see when the MDS was activated on my '06 300C. After trying repeatedly to access the "secret" EVIC menus and turn on the MDS notification, I came across this post...
  8. Backfitting Multi-Displacement-System

    1st Gen SRT8-Specific Performance & Engine/Intake/
    I apologize if this subject is elsewhere. I searched and didn't find it in this forum. Okay, might seem like sacrilege to discuss fuel economy, but with premium fuel racing up to and possibly over $4/gal, I was wondering if anyone knows what it would take to adapt the MDS, that is now available...
  9. Warranty Question

    General Discussion
    Hi, I brought the 300c (08) in to the dealer to have the MDS checked because I sometimes notice that it's a little 'sluggish' whenever the MDS is engaged. It feels like a 'shrug' that's noticeable. The car is out of the original warranty but since I bought an extended warranty (can't remember...
  10. Is my MDS confused?

    Problems / Dealer Service
    Ok, generally I haven't had any serious issues with my 05 300C since it came off warranty 30k miles ago. Recently though, some strange things have been happening. I know it's not running right because you get used to what is normal for a car you've owned for a long time - you know what I mean...