Clunk when disengaging cruise - Competition Diesel.Com

Dbordenb · 07-12-2020, 05:20 PM

Maybe this is normal but I want to make sure. I have noticed a clunk somewhere in the driveline when disengaging cruise or when abruptly getting on or off the accelerator. It does not make the clunk when coming to a stop or when accelerating from a stop. I started to notice it after a new tune and the tuner said it was because of the increased pedal sensitivity. This may be the case but it seemed odd to me.

So far I have checked transmission mount bolts and all are tight. I greased the slip yoke with no success in eliminating the clunk. I am waiting on new u joints to come in the mail but I am 95% sure it wasn't the joints because they all looked good when I pulled them out. I measured the amount of rotation in the rear pinion flange and it is just under a 1/4 inch rotation with no in/out or up/down movement.

Any other ideas on what I could check or am I chasing something that isn't even a problem in the first place?

jasonc · 07-12-2020, 05:59 PM

Listening to hard.
You'd be horrified if you ran in my work truck with all the clunks it has.

jasonc · 07-12-2020, 06:00 PM

I run my chit until problems are
"Easy to diagnose"

Dbordenb · 07-13-2020, 05:03 PM

I’ll just keep running it then. Thanks for the input

Dbordenb · 09-10-2020, 06:40 PM

Wanted to update this for folks reading in the future. My driveline clunk ended when I got a new tune with a less sensitive pedal. I hated the jerky pedal feeling the truck had with the super sensitive pedal so I asked for a different tune. So apparently reducing pedal sensitivity will stop the clunk that happens when reducing cruise control.

07-12-2020, 05:20 PM	#1
Dbordenb Name: Dbordenb Title: Diesel Enthusiast Status: Not Here Join Date: May 2014 Location: USA Member`s Gallery Posts: 133	Clunk when disengaging cruise Maybe this is normal but I want to make sure. I have noticed a clunk somewhere in the driveline when disengaging cruise or when abruptly getting on or off the accelerator. It does not make the clunk when coming to a stop or when accelerating from a stop. I started to notice it after a new tune and the tuner said it was because of the increased pedal sensitivity. This may be the case but it seemed odd to me. So far I have checked transmission mount bolts and all are tight. I greased the slip yoke with no success in eliminating the clunk. I am waiting on new u joints to come in the mail but I am 95% sure it wasn't the joints because they all looked good when I pulled them out. I measured the amount of rotation in the rear pinion flange and it is just under a 1/4 inch rotation with no in/out or up/down movement. Any other ideas on what I could check or am I chasing something that isn't even a problem in the first place? __________________ 2014 CCSB 2500 Laramie Longhorn SOLD-2003 Quad Cab, 48re, Second Gen swap 64mm turbo, BMS injectors, Hamilton Cam, port and polished head, ARP studs

07-13-2020, 05:03 PM	#4
Dbordenb Name: Dbordenb Title: Diesel Enthusiast Status: Not Here Join Date: May 2014 Location: USA Member`s Gallery Posts: 133	I’ll just keep running it then. Thanks for the input __________________ 2014 CCSB 2500 Laramie Longhorn SOLD-2003 Quad Cab, 48re, Second Gen swap 64mm turbo, BMS injectors, Hamilton Cam, port and polished head, ARP studs

09-10-2020, 06:40 PM	#5
Dbordenb Name: Dbordenb Title: Diesel Enthusiast Status: Not Here Join Date: May 2014 Location: USA Member`s Gallery Posts: 133	Wanted to update this for folks reading in the future. My driveline clunk ended when I got a new tune with a less sensitive pedal. I hated the jerky pedal feeling the truck had with the super sensitive pedal so I asked for a different tune. So apparently reducing pedal sensitivity will stop the clunk that happens when reducing cruise control. __________________ 2014 CCSB 2500 Laramie Longhorn SOLD-2003 Quad Cab, 48re, Second Gen swap 64mm turbo, BMS injectors, Hamilton Cam, port and polished head, ARP studs

07-12-2020, 05:59 PM	#2
jasonc Name: jasonc Title: Too Much Time Status: Not Here Join Date: Nov 2009 Member`s Gallery Posts: 4,412	Listening to hard. You'd be horrified if you ran in my work truck with all the clunks it has.

07-12-2020, 06:00 PM	#3
jasonc Name: jasonc Title: Too Much Time Status: Not Here Join Date: Nov 2009 Member`s Gallery Posts: 4,412	I run my chit until problems are "Easy to diagnose"