mds

  1. M

    2015, 2500, 6.4 MDS delete

    Just started to hear a little squeal from the top of the motor and I believe its a lifter starting to fail. I'm currently looking at purchasing the MDS delete kit from MMX. the total cost is just over $3k which includes the PCM unlock, Hellcat oil pump, 87mm throttle body and MDS delete kit...
  2. C

    2009 Ram 1500 5.7 MDS - weird #5 misfire problem

    I have a weird thing happening at 135K miles, with a clean well-maintained, original-owner 2009 Ram 1500 Hemi MDS. It’s actually two things that are probably related: After a cold start, it runs fine. I drive about 1 minute and if/when it kicks into eco/MDS mode, it runs poorly (95% sure due...
  3. Bmags

    MDS Delete SOLVED

    Just wanted to share this, pulled the trigger and had my ECU tuned to delete the MDS from functioning. Super simple, mailed my PCM out and he mailed it back with no more MDS!!! The guy said if sending in my current PCM wasn't an option, that sourcing a used one could work too. Can't believe I...
  4. Mordanger

    MDS

    I recently put a BRAND NEW 5.7L Hemi in my 2014. Coming from MOPAR it has the MDS system in it and I can't break into the engine because that will void the lifetime warranty through MOPAR. I have a Edge CTS3 tuner on it that can disable the MDS system, will this cause issues?
  5. dwsiddall

    Multi-Displacement System (Cylinder Deactivation) Question

    I bought a pre-owned 2016 Ram 1500 LoneStar Edition and it is supposed to have the Multi-Displacement System and shut down cylinders at highway speeds to save on fuel. My question is, how do I know when it kicks in? Should there be an indicator of some sort? How do I know it's working...
  6. B

    MDS Pulse when going 4 back to 8

    The MDS system in my '14 1500 5.7 seems to be "fluctuating" when it shifts back to 8 mode from 4 mode. I can feel it in my pants and hear it. I confirmed this by shutting MDS off by using the gear selector on the steering wheel and the issue went away. I have AlfaOBD so I can do some in-depth...
  7. LifeinOverdrive

    How to turn off MDS(cylinder deactivation) for free

    Hello Everyone, I recently came across a product video that also had an interesting bit of information in it. You can quickly and easily cycle the MDS(cylinder deactivation) on and off. Check it out here: Turn off MDS(cylinder deactivation) Let me know if you guys have any other features that...
  8. Rod Knock

    GM DFM and AFM lifter failure - class action lawsuit

    This needs to hapen ASAP to RAM and the other Stelantis brands that use HEMI engines in their vehicles so that this endless debate over what causes lifter failure and what kind of lube to use to mitigate it ends. It's a manufacturer issue on the supplier side and possibly incorect assembly of...
  9. T

    Poll Oil Viscosity - Hemi 5.7l

    Add any negative or positive effects. MDS, ect.... If anyone is wondering, I know very little about oil.
  10. A

    Tuner to disable MDS on 2018 Ram 3500 6.4l

    I have been reading posts and threads for days in this and other forums and am not able to find a tuner recommendation to disable MDS on my 2018 Ram 3500 6.4l. For some reason this particular combo is tough to find. My previous truck, 2007 Silverado, used AFM and had 2 lifters seize. One on...
  11. B

    Bad MDS Solenoid Okay?

    Hi all, I am considering replacing my 2nd gen ram with a 3rd gen Hemi. I have found a gentleman on Facebook marketplace who has a 2007 SLT for sale that he says has a bad MDS solenoid. Should I run away as fast as I can? or is this not a very big deal? The owner says he has the truck set to...
  12. A

    Good Times A head...

    Hey guy I'm Adrian... Just bought a 2013 Ram Quad Cab Sport Hemi 5.7L... Has propane conversion kit (hybrid)… Coming from Fords I've done some wrenching before... My buddy made me an offer I couldn't refuse... There's a catch... it has a misfire on cylinder 5... :) ya... a lifter and cam...
    • Adrian Tycki
    • Thread
    • cam cam and lifters lifter lifter failure mds phase lochout
    • Replies: 9
    • Forum: Introduction
  13. Curt Gobbell

    Which Cam and Lifters Did You put in Your 5.7?

    I need to do a top-end rebuild soon and I would like to get your feedback on what cam/lifters you chose to rebuild the top-end of your 5.7L? Please list; 1. What you used? (i.e. Comp Cam *** with OEM Delphi lifters) 2. Did you keep MDS? why or why not? 3. Where you bought it? 4. Why you chose it?
  14. BigHornRam

    Strange Howl/Whine noise

    So I started hearing this strange howl/whining noise in 1st, 2nd and 3rd gear lately right before the transmission shifts. I also hear it if I’m coming to a stop. Here’s the thing, if I select mds off by using the gear buttons on the wheel, the sound goes away almost every time. Also, it doesn’t...
  15. 2011 big Horn

    2011 ram 1500 Hemi 5.7 MDS shut off

    I have been reading and watching you tube videos of how to turn off the stupid MDS / eco mode. I have watched a video of someone just using the gear selector to select 6th gear which would be great HOWEVER in my 2011 ram 1500 it will not allow me to go past 5th gear on the manual gear selection...
  16. H

    Please help 12’ 5.7 Hemi Cam Upgrade Lifter Change P1072 error

    2012 Ram 1500 5.7 Hemi 110,000 miles lifter stuck cam worn, replaced with AMS Racing NON MDS lifter and Comp Cam camshaft kit with Superchip tuner. Block removed, milled and cleaned brand new, compression is perfect, everything has been tested new fuel injectors gaskets are sealed. Will not hold...
  17. C

    HELP MDS Delete Question not running right

    i purchased 16 ams lifters 4 mds plugs. Did a valve job and got everything freshener up. Has the stock cam. After 2 weeks of working on it every day after school I got it back together. I know what I’m doing but never have worked on a hemi. I got it running but it has a very rough idle and is...
  18. J

    MDS help......

    This may be a dumb question but going to ask anyway lol. I trade my 2015 1500 in for a 2018 1500. One thing that I have noticed is that my 2015 would kick into Eco mode and a light would come on. I have not seen this even once on the 2018. Is this normal or do I need to do something?

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