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Hop, skip, maybe a jump..... #4563411
11/03/17 08:18 PM
11/03/17 08:18 PM
Joined: May 2013
Posts: 470
IL
lugNutz Offline OP
lugNutz  Offline OP
Joined: May 2013
Posts: 470
IL
Hey all, need some opinions here... Vehicle at hand is a 2009 Dodge Challenger R/T, 6-spd.. Last week out of nowhere something weird started happening.

Issue: Low RPM in any gear from 3-6... under acceleration (not even hammering on it) the tires feel like they are skipping and I get some shudder out of the rear end. The only way I can explain it to anyone is it feels as if I am driving over the grooves that let you know you are on the shoulder. If I let off the pedal and then give it a light foot, it's fine.

Note: Tires are brand spanking new- I replaced them because they were old and when this started happening, I thought it could have been a loss of traction given the low tread depth.

I am open to all comments/suggestions- I am not quite sure where to begin at this point.

Last edited by lugNutz; 11/03/17 08:33 PM. Reason: bad punctuation...
Re: Hop, skip, maybe a jump..... [Re: lugNutz] #4563415
11/03/17 08:22 PM
11/03/17 08:22 PM
Joined: Feb 2013
Posts: 11,097
Phoenix, AZ
Nick1994 Online content
Nick1994  Online Content
Joined: Feb 2013
Posts: 11,097
Phoenix, AZ
Did it start with the new tires?


2015 Hyundai Sonata 2.4L 88k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Hop, skip, maybe a jump..... [Re: lugNutz] #4563426
11/03/17 08:35 PM
11/03/17 08:35 PM
Joined: May 2013
Posts: 470
IL
lugNutz Offline OP
lugNutz  Offline OP
Joined: May 2013
Posts: 470
IL
Originally Posted By: Nick1994
Did it start with the new tires?


No, prior to the tire change. Sorry, I could have worded that better. I made the tire change because this started happening. I thought the low tread depth and age could have been the issue. I was wrong.


'13 Jeep Grand Cherokee Limited | 30K
'14 VW Passat 1.8T SEL Premium | 47K
'05 Ford Explorer XLT | 96k | WIX 51372 | FS 5w-30 (RIP)
Re: Hop, skip, maybe a jump..... [Re: lugNutz] #4563462
11/03/17 09:38 PM
11/03/17 09:38 PM
Joined: Dec 2015
Posts: 420
Kentucky
Fsharp Offline
Fsharp  Offline
Joined: Dec 2015
Posts: 420
Kentucky
Bad driveshaft u joints or rag joint or driveshaft support bushing or a rear suspension bushing. Just guesses but something to check out

Last edited by Fsharp; 11/03/17 09:39 PM.
Re: Hop, skip, maybe a jump..... [Re: lugNutz] #4563495
11/03/17 10:33 PM
11/03/17 10:33 PM
Joined: Aug 2011
Posts: 2,090
Lakeside, CA
Blkstanger Online content
Blkstanger  Online Content
Joined: Aug 2011
Posts: 2,090
Lakeside, CA
Are you sure it's not your clutch slipping and causing a shudder?


99 Jeep WJ 4.7 192,000 Maxlife 10w30, Fram Ultra.
Re: Hop, skip, maybe a jump..... [Re: lugNutz] #4563504
11/03/17 10:49 PM
11/03/17 10:49 PM
Joined: Feb 2013
Posts: 11,097
Phoenix, AZ
Nick1994 Online content
Nick1994  Online Content
Joined: Feb 2013
Posts: 11,097
Phoenix, AZ
Probably either the differential or a bad u joint. Possibly a bad transmisison mount


2015 Hyundai Sonata 2.4L 88k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Hop, skip, maybe a jump..... [Re: lugNutz] #4563516
11/03/17 11:16 PM
11/03/17 11:16 PM
Joined: Dec 2016
Posts: 7,181
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,181
Waco, TX
U-joints wouldn't be intermittent.

Clutch working OK?

Possibly a wonky rubber mount somewhere....

Differentials usually fail SPECTACULARLY when they do.
I have broke a few in my life, and have always been utterly *amazed* at the carnage
(gears hate having big metal chunks wedged into them)


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Hop, skip, maybe a jump..... [Re: lugNutz] #4563541
11/04/17 12:11 AM
11/04/17 12:11 AM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
Slip joint on the driveshaft?

Re: Hop, skip, maybe a jump..... [Re: Blkstanger] #4563761
11/04/17 09:31 AM
11/04/17 09:31 AM
Joined: May 2013
Posts: 470
IL
lugNutz Offline OP
lugNutz  Offline OP
Joined: May 2013
Posts: 470
IL
Originally Posted By: Blkstanger
Are you sure it's not your clutch slipping and causing a shudder?

I would consider this if it were coming out of a shift at low RPM, however, it can happen after sitting in gear, coasting to a lower speed, then pressing down on the gas again. Clutch feels good to be honest.

As far as all the drivetrain opinions, I guess I am going to have to get under there if I can find some time this weekend and have a look. Was really hoping it wasn't anything to do with that.


'13 Jeep Grand Cherokee Limited | 30K
'14 VW Passat 1.8T SEL Premium | 47K
'05 Ford Explorer XLT | 96k | WIX 51372 | FS 5w-30 (RIP)

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