May 20, 2019, 10:03:03 AM
collapse
collapse

Author Topic: RDU "Chatter" while turning?  (Read 152 times)

Offline StinkinLinkin13

  • Full Member
  • : San Antonio, Texas
  • Thank You
  • -Given: 41
  • -Received: 75
  • Posts: 177
  • Ecoboosted
RDU "Chatter" while turning?
« on: April 19, 2019, 08:05:13 AM »
Kinda a longshot but seeing if anyone has experienced this symptom... I noticed yesterday when making a decent relatively slow speed turn I feel a vibration / chatter coming from the rear. I also feel it during moderate to hard acceleration... It kinda feels like the RDU clutches are engaging/disengaging really quickly.... Similar to torque converter shutter but its very obviously coming from the rear end.... I have a very generic U3000 code... Scanners giving no specifics...TIA
2016 Lincoln MKS Ecoboost -

Full Catless Exhaust with Magnaflow mufflers - Livernois E30 tune - Firestorm HPFP - 3 Bar Map - 160 Thermostat - EPP Hot Pipes - AEM Dryflow Filter - BOV VTA - H&R Sport Springs - 20"x10" Niche Veronas on 275/40-20 DWS06.

Offline SHOdded

  • Administrator
  • Elite Member
  • : Beltsville, MD
  • Thank You
  • -Given: 10780
  • -Received: 3562
  • Posts: 14979
Re: RDU "Chatter" while turning?
« Reply #1 on: April 19, 2019, 09:11:27 AM »
I know a FEW members have had issues with the RDU, the first I heard of was glock-coma.  Usually a whining or grinding sound is the giveaway.  The viscous coupling/ATC portion of the RDU is sealed (I think filled with Motorcraft Mercon LV) has only been pinpointed as a problem in an Edge living in Russia IME.  And no shuddering/chattering there either.

So I would check the wiring between the AWD/4x4 module and the ATC, and see if there are codes stored in the PCM first.  Might be a wheel speed sensor or two at fault also.  You can use AWD related PIDs to see what speed each wheel is turning at.
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

Offline ZSHO

  • Forum Supporter
  • RotM Winner
  • Elite Member
  • *
  • : New York SHO
  • Thank You
  • -Given: 1419
  • -Received: 3187
  • Posts: 2226
  • Trap Speed of almost 116 mph.
Re: RDU "Chatter" while turning?
« Reply #2 on: April 19, 2019, 01:29:56 PM »
Have you Flashed the car recently! Sometimes similar codes would suggest you Flashed a Tune to ECU,but not quite certain its relevant in your case! Warranty still active! Z
« Last Edit: April 20, 2019, 03:02:12 PM by ZSHO »


2013 Performance Package SHO| Livernois Custom Methanol Tune|3-Bar Map|Reische-170-Stat|Full Race Tial-10psi BOV in Black|PPE-Gloss Black Hot Pipes|PPE Catted DP|Corsa Sport Cat Back Exhaust|H&R Sport-Springs|Airaid-Dry-flow-CAI|CFM Performance Billet Valve Cover Breather In Gloss Black|Llumar 20%Ceramic window Tint|MSD Ignition Coils in Black|Extreme Roof Spoiler|Redline Fluids all around|First-SHO With Direct Port Alky-VP-M1-100%-Methanol Injection|LMS-Custom-Dyno-Tuned @ 415whp-465wtq| Best Trap Speed of 115.54 mph|

Offline glock-coma

  • Forum Supporter!
  • Elite Member
  • : Parma,Ohio
  • Thank You
  • -Given: 622
  • -Received: 683
  • Posts: 2037
Re: RDU "Chatter" while turning?
« Reply #3 on: April 20, 2019, 10:15:52 AM »
As SHOdded mentioned I did have RDU issues. Ford misdiagnosed a pulsing vibration @50+ mph and replaced everting that turns in the rolling drivetrain minus the trans.
The RDU was replaced last and finally corrected the issue.
2010 red candy metallic non PP 402B
AJPTURBO 2 BAR Tune Stock 14.1@100.3 / Tuned 12.83@107.7
K&N panel, RX OCC, Sp-534 @.30 Tint 50%F-35%R BOV bypass
1997 SHO silver frost (sold)
1990 SHO triple black 5-speed (saved my life)

Offline StinkinLinkin13

  • Full Member
  • : San Antonio, Texas
  • Thank You
  • -Given: 41
  • -Received: 75
  • Posts: 177
  • Ecoboosted
Re: RDU "Chatter" while turning?
« Reply #4 on: April 20, 2019, 02:51:19 PM »
I'm still under warranty which is good. I'm about 90% sure its the RDU clutches chattering when power is sent to the rear. I got video recorded from underneath I'll post later.
2016 Lincoln MKS Ecoboost -

Full Catless Exhaust with Magnaflow mufflers - Livernois E30 tune - Firestorm HPFP - 3 Bar Map - 160 Thermostat - EPP Hot Pipes - AEM Dryflow Filter - BOV VTA - H&R Sport Springs - 20"x10" Niche Veronas on 275/40-20 DWS06.

 

* Featured Topics

* Recent Topics

Re: A sad, sad day in the history of my SHO.....
by SHOdded | Today at 07:11:12 AM
Ok, my post above was NOT a suggestion.  Unless bpd states otherw...
Re: New Member - 14 SHO Non-PP
by 76fomoco | May 19, 2019, 09:23:25 PM
more so interested in in your 1/4 mile times ...
Re: I think I may need a new rack or motor.
by PDSHO | May 19, 2019, 08:04:06 PM
Curious how this install went?My 2013 has had a power steering fault o...
Re: 05/19/2019 MIR Test and Tune
by shoNoff | May 19, 2019, 05:29:40 PM
Ok... attached are the two time slips.. To prevent me from going down ...
Re: Rear Brake issue?
by Scott13SHO | May 19, 2019, 03:59:36 PM
Do you service the slide pins and boots regularly?  Permatex purp...
Re: Picked up a Tremor, lots of fun going to be happening soon
by SHOdded | May 19, 2019, 12:50:23 PM
Congrats, and here's to another 25 years!!!...
Re: What have you done to your Ecoboosted vehicle today?
by 802SHO | May 19, 2019, 10:37:07 AM
Mrhighcaliber you wouldn't happen to have any pics of the pre tur...
Re: Spark plugs
by avidmotion | May 19, 2019, 06:57:27 AM
So I was changing plugs not so much that I thought I needed them, just...
Re: Anybody's horn just stop working???
by DRII | May 18, 2019, 07:53:03 PM
also the airbag light is on...adds to Z's relay idea vs the fuse....
Re: Water in passenger floor
by DRII | May 18, 2019, 03:57:59 PM
Hey Agent...,I had/have the same issue with my MKS (2010).Yes, unclogg...
Re: Had a tiny exhaust leak....
by ZSHO | May 18, 2019, 09:44:43 AM
The very reason I aways recommend to change the Gaskets especially bei...
Re: StopTech Rotors with Akebono Pads
by Macgyver | May 17, 2019, 07:36:12 PM
Looking good. Fill us in when you get more. ...
Re: Upgraded Transmission Mounts? (Dogbone)
by ridered74 | May 17, 2019, 04:24:30 PM
Too bad these add noticeable NVH. I'd buy a pair for my MKS, but ...
Re: 2019MAY16 - KILKARE DRAGWAY - STOCK 14 MKS
by ridered74 | May 17, 2019, 04:21:01 PM
I'm not typically a betting man, but I'd bet that I will be ...
Re: First SHO With Direct Port Methanol injection!!
by SHOdded | May 17, 2019, 11:06:03 AM
https://www.ecoboostperformanceforum.com/index.php/topic,7881.msg14981...

Back to top