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About LinkBackshey everyone i have an 07 charger r/t and my issue is that even before the cai and exhaust it would do this same thing when the car is in drive and i come to a stop it will feel like a jolt forward and back almost like someone tapped me from behind and also the rmps dip a a little bit, and it also does it when im using the shift stick so im pretty sure that rules out "the tranny is down shifting theory" any help would be greatly appreciated because my warranty is almost up
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11-15-2008, 09:09 AM #1
LX Padiwan
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- Sep 2008
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- 860
idle / tranny / motor issue... so confusing
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11-15-2008, 09:21 AM #2
Retired US Coast Guard Engineering Chief
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- Feb 2008
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- Eastern Shore of Maryland
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- 1,584
Are you using a DS Predator and a canned tune. I'm sure you have MDS, right? I have an 05 300c 5.7 and when I changed the stock exhaust to Magnaflow and installed the predator it caused what some call the MDS bump or pulse. In other words you can feel it kicking in and out. If you have the DS Predator you can disable it and see if that is the cause.
jeff
6.4 Apache Heads, 6.1 SB, SRT-MAxx Cam, 6.1 Intake, 87mm TB Ported by MM, TTi Long Tubes and Mid pipes, Dyno-Max Ultra-Flow 3" Exhaust, LMI 4" CAI, Predator, BC Racing Suspension, Magnum front w/69 Cuda Grill inserts, Trufiber SRT8 hood, SLP 25% Under Drive Pulley, Zeitronix Wideband, Hotchkis Sway Bars, SPC Front/Rear Camber Kits, 3.06 GETRAG, Builder Bill Billet Stator 3200 TC, Flex-Plate & Valve Body, MTCM, Brembo brake set and Dyno Tuned by AJ Hemituner.
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11-15-2008, 09:31 AM #3
LX Padiwan
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- Sep 2008
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- 860
nope no predator and it only does it at a dead stop...
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11-15-2008, 12:48 PM #4
Wrong Way
- Join Date
- Jun 2007
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- East TN
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- 44
I had the exact same issue on the Charger and the 300. Sitting at a light, I could watch the RPM's dip below 500 and then I got the "bump" when rpm's jumped back up. Predator tunes on both cars took care of this issue.
With that being said, both cars have had PCM software upgrades done via the Predator (when the CALIDS are upgraded by Dodge/Chrysler). Both cars have been returned to stock for dealer visits recently and the "bump" has not experienced at all when set back to stock.
IMHO, the PCM software upgrades took care of it.2007 300C: Predator / 170 Tstat / AFE Stage II / Flowmaster Super 40's / BT Catch Can / DC Sports shock tower brace
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11-15-2008, 01:10 PM #5
LX Padiwan
- Join Date
- Jan 2008
- Posts
- 177
It's a tuning / MDS issue. Even updating the CALIDS might be enough to fix it, which a dealer can do. But, with your mods, it's about time for a Predator anyway.
Daytona Top Banana #916 9psi Vortech powered Inertia Motorsports 372, now with MDS solenoids
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11-15-2008, 05:10 PM #6
GTL
- Join Date
- May 2008
- Location
- Dallas
- Posts
- 930
Second that... It's a tuning/mds issue. Something to the effect of your mds is staying engaged to long and when it shuts off the car jumps.
Mods: Jba shorties, catless mids, FLowmaster 44's, stock resos, MHP Catch can,MTCM,No-esp mod,Performance Electronics, Electronic Shift Kit, and the Inertia Motorsports Spartan Camshaft.
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11-15-2008, 05:42 PM #7
Domestic Outlaw
- Join Date
- Oct 2008
- Location
- No. Calif.
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- 93
Take it in - could be torque convertor or Tranny - even in Autostick the tranny still downshifts when you come to a stop.
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11-15-2008, 10:22 PM #8
True failure is the failure to try!
- Join Date
- Jan 2008
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- Chicago IL
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- 1,999
get a tranny flush
400ci stroker, Vortech blower, and enough said
07 Magnum Srt8 incognito brute
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