2005 5.7 Jeep GC - No more Cruise Control after tune with diablosport i3

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Radioactive87
Posts: 7
Joined: Sat May 10, 2025 5:48 am

2005 5.7 Jeep GC - No more Cruise Control after tune with diablosport i3

Post by Radioactive87 »

Hey Guys
Greetings from Germany,

I have a 2005 Jeep GC Hemi 5.7. Every Hardware is Stock and very well serviced. Car has about 105.000km ~ 65.000 miles.

I bought an intune i3 Platinum last week.
I installed 91 Octane Tune and set MDS off.

Car runs great BUT i don't have Cruise Control anymore. At 0 to maybe 50mph it works...sometimes....but when i go over that it disables the Cruise Control and wont come on again.

I tried do restore the Backup.....but then i got cylinder 1 and 6 reactivation Performance Control Error and the Car runs like shit.

So i modifed the Stock tune - to turn off MDS again - now it runs on all cylinders again...but still no cruise Control.....and it seems i can not go back to stock again because then i have the Cylinder 1 and 6 problems again - but MDS worked really well before starting with tuning.
    I think my Backup is brocken or something so i can not go back to the very first Backup before the changes :-(:-(

    Pls Help! I want my Cruise Control back.....when MDS will work again too would be great...but Cruise Control is more needed.

    Best Regards
    Mike
    User avatar
    mikel
    Posts: 58675
    Joined: Tue Jan 16, 2007 1:17 pm
    Location: DiabloSport World Headquarters
    Contact:

    Re: 2005 5.7 Jeep GC - No more Cruise Control after tune with diablosport i3

    Post by mikel »

    did you adjust the tire size when you loaded the tune?

    as for the MDS codes when you returned to stock, that sounds like an odd issue that some 05 models have after a flash, where they get stuck in MDS mode. To fix it, disconnect the battery for a second and it should be fine. Not sure what causes it, but it happens after factory flashes as well, so its nothing to do with our device or process.
    Mike Litsch
    DiabloSport Brand Manager
    Diablo Tech support by phone:
    561-908-0040
    M-F 8:00 AM to 5:00 PM EST

    [email protected]
    Radioactive87
    Posts: 7
    Joined: Sat May 10, 2025 5:48 am

    Re: 2005 5.7 Jeep GC - No more Cruise Control after tune with diablosport i3

    Post by Radioactive87 »

    No, not Tire Size...but i raised the speed limiter about 15 mph.
    But already set it back to Stock.
    Nothing Changed.
    Will try the battery disconnect and tell you the result then.
    Radioactive87
    Posts: 7
    Joined: Sat May 10, 2025 5:48 am

    Re: 2005 5.7 Jeep GC - No more Cruise Control after tune with diablosport i3

    Post by Radioactive87 »

    mikel wrote: Thu May 15, 2025 9:14 am did you adjust the tire size when you loaded the tune?

    as for the MDS codes when you returned to stock, that sounds like an odd issue that some 05 models have after a flash, where they get stuck in MDS mode. To fix it, disconnect the battery for a second and it should be fine. Not sure what causes it, but it happens after factory flashes as well, so its nothing to do with our device or process.

    YOUR ARE MY HERO.....It worked....for both Problems!!!!!!
    MDS and Cruise Control is working again!!!!!!!

    THANKS a LOT!!!
    User avatar
    mikel
    Posts: 58675
    Joined: Tue Jan 16, 2007 1:17 pm
    Location: DiabloSport World Headquarters
    Contact:

    Re: 2005 5.7 Jeep GC - No more Cruise Control after tune with diablosport i3

    Post by mikel »

    glad to hear it, enjoy!
    Mike Litsch
    DiabloSport Brand Manager
    Diablo Tech support by phone:
    561-908-0040
    M-F 8:00 AM to 5:00 PM EST

    [email protected]
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