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Ok so I’m not alone! Lol

yeah it’s so strange but your right it’s a low vibration in the seat and you can easily here the difference. I haven’t noticed anything with rpms raising or lowering when it does it so that’s a good thing. I also had it happen to me going from park to reverse however once I gave it some throttle it stopped. I have a 21 sp wb just a little over 550 miles
It did it yesterday on my drive home... now you've got me paying attention.

Sitting at a stoplight. In Drive. Foot on the Brakes. TRACK Mode. A/C Off. Windows Down.
The vibration started coming through the seat. I didn't touch the throttle. It vibrated for about 15 seconds.
No change in idle, or rpm. There is also a very low audible rumble that comes with the vibration.

It only did it once that I know of. Most of my drive home is highway.
 
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2018 Scat Pack SHAKER in Plum Crazy
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I'm still thinking cooling fans kicking on, not sure who all said it. A tip might be to pull up gauges and check temps and volts, you might see volts drop then recover when they kick on, then spike and recover when they cut off. ALso you may see the temps up highish, then when they drop the fan cuts off.
If it is the fans, maybe a leaf, dead squirrel, part of a mustang... is stuck in it.
 

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2020 Dodge Challenger Hellraisin Scat Pack
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It did it yesterday on my drive home... now you've got me paying attention.

Sitting at a stoplight. In Drive. Foot on the Brakes. TRACK Mode. A/C Off. Windows Down.
The vibration started coming through the seat. I didn't touch the throttle. It vibrated for about 15 seconds.
No change in idle, or rpm. There is also a very low audible rumble that comes with the vibration.

It only did it once that I know of. Most of my drive home is highway.
Can't find the info but I seem to recall with track mode the engine coolant temperature is kept at a lower temperature. If I am not imagining this the radiator fan could come on more often and could even be run in high speed mode.

Have you tried using just normal/street mode under the same conditions to see if the behavior remains?
 

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21 Challenger SP WB TorRed, Carbon Dual Stripes, Carbon Black Rims, Red Caliper, Performance Spoiler
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Discussion Starter · #24 ·
Can't find the info but I seem to recall with track mode the engine coolant temperature is kept at a lower temperature. If I am not imagining this the radiator fan could come on more often and could even be run in high speed mode.

Have you tried using just normal/street mode under the same conditions to see if the behavior remains?
I can’t speak for HEMI Eagle but I know when the vibrations happened to me it was in my “auto” drive mode which is trans sport, traction street, steering sport and suspension sport. I have also noticed it in custom mode with my setup being track for trans and the rest in sport.
 

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2016 Challenger SRT
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unfortunately I don’t have any 93 octane gas stations within 50 miles of me. It’s all 87,89,91 octane
Even Sam's Clubs near me are 92 octane, although NOT a top tier gas. Costco IS one!
 

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Hey all!
So I was driving my new challenger scat pack today and noticed after about an hour of driving i am noticing the car vibrate while at a complete stop. It happens when idiling (drive park...etc) however it’s not every time. The vibration also only last about 15 seconds or so then it goes away. Once I give it gas all is returned to normal no vibration. Also to be clear the vibration is a very low vibration I can feel it in my seat however it does not shake the vehicle at all. I have almost 600 miles on it and so far no issues. I’m giving it more throttle now that it’s over 500 miles but any ideas?

I also wanted to add it’s almost 100 degrees out today and I’ve noticed my oil temp change ever so slightly randomly.
Hi Gregdetroit,
Sorry to hear you are experiencing this, we certainly understand why this would be concerning. If you end up addressing this with your local Dodge dealer, please let us know via PM. We'd be more than happy to provide you with an additional layer of assistance for that process.

Rob
Dodge Cares
 

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Hi Gregdetroit,
Sorry to hear you are experiencing this, we certainly understand why this would be concerning. If you end up addressing this with your local Dodge dealer, please let us know via PM. We'd be more than happy to provide you with an additional layer of assistance for that process.

Rob
Dodge Cares
The vibration we are feeling will have to be replicated and proven to the inspecting Dealer.
Even then... I can almost guarantee they will be clueless to the issue/ resolution.

I can’t speak for HEMI Eagle but I know when the vibrations happened to me it was in my “auto” drive mode which is trans sport, traction street, steering sport and suspension sport. I have also noticed it in custom mode with my setup being track for trans and the rest in sport.
I have experienced the strange vibration in TRACK and Auto Mode.
A/C ON or OFF. It's not the A/C Compressor Clutch engaging or disengaging.

I also always run SUNOCO 93 Octane Gas... I've never run anything different.
 

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Did you recently eat at Taco Bell? That can explain strange vibrations. Also, are you using your vented seats? It's pumping air in from the HVAC system, I can hear the fans ever so slightly under my seat. And man does that cool air feel good down there!
 

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Did you recently eat at Taco Bell? That can explain strange vibrations. Also, are you using your vented seats? It's pumping air in from the HVAC system, I can hear the fans ever so slightly under my seat. And man does that cool air feel good down there!
If and when I eat at the Border... I make sure to get it to go so I can be near a toilet at home. It's not Taco Bell.

The Vibration is not coming from the Ventilated Seat... I've turned the A/C OFF and ON during the vibration... it has no effect.
 

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The vibration we are feeling will have to be replicated and proven to the inspecting Dealer.
Even then... I can almost guarantee they will be clueless to the issue/ resolution.



I have experienced the strange vibration in TRACK and Auto Mode.
A/C ON or OFF. It's not the A/C Compressor Clutch engaging or disengaging.

I also always run SUNOCO 93 Octane Gas... I've never run anything different.
Hi HEMI Eagle,
We understand that you may be hesitant to work with your dealer. However, if you do, please know that we would be more than happy to escalate a case on your behalf to connect you with a Case Specialist who can provide you with an additional layer of support as you work with your dealer.

Rob
Dodge Cares
 

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Just say'in... a little vibration could be normal... goodness knows what the on-board computer is doing while sitting idle at a light. If the TIPM is running tests, and playing with table values - it could be, it's just measuring/varying tolerances - and you "feel" it working in those vibrations.
Alternatively, it could be any resistance (fan, pumps, etc.) that "comes on" while the engine is idle.
Lastly, if you purhcase your fuel at a less than "ideal" vendor/distributor, you may want to consider "cleaning" additives. Be careful here though, some additives compete and or negatively interact. Before attempting such a thing I would ask the gas station to see the cast sheet for the fuel - that may (sometimes) tell you want additives it has in it. Cheap(er) stations will not have such records though.
Lastly, if the engine calls for 91, then 91 is what it wants. Going to 93, only ensures less detonation, and hence less chance of pulling timing under load. If you "exclusively" run 93 from birth though, the ECM adjusts for that, and puttling 91 in it will cause the engine to "feel" sluggish under acceleration.
Opinion Alert: Since my car was new - I have only ever run exclusively 93 Shell V-Power. It is the only 93 octane rating "washed" with nitrogen instead of alcohol. The residual nitrogen gives a nice smooth burn. Alcohol diminishes the octane and makes the combustion less effective.
 
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