Harmonic Noise High Pressure Diesel Injector Pump Return - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Export Grand Cherokee 2011+

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 07-23-2016, 09:03 PM
Swampy's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Jul 2011
Location: Oakford, Western Australia
Posts: 758
Thanks: 3
Thanked 82 Times in 60 Posts
Rep Power: 35640
Swampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond repute
Harmonic Noise High Pressure Diesel Injector Pump Return

Hi

Late last week the Jeep developed a loud harmonic noise while driving and idling.

It was a constant noise that generally was louder when deaccelerating, otherwise was much the same pitch or tone and did not change pitch with engine revs.

Upon inspection I found that it was one of the return pipes to the High pressure Diesel Injector Pump that was actually vibrating. Felt a bit like an electric toothbrush or the tip of one of those other "appliances" that may be found in ones Wife's bottom bedside drawer, if indeed one would have one. (I'm referring to wife, not the appliance, as they seem to go hand in hand.)

Anyway, by putting some gentle pressure on the pipe, the vibration would cease and the noise stop. So I rigged up a cable tie arrangement that stopped the vibration and noise as per the photo below.

Has anyone else had the same, and if so, what was the fix? My concern is that maybe I have a non return valve or worse, the injector pump is on the way out. I shudder to think what that may cost. Any thoughts or experiences would be greatly appreciated.
[IMG]image by [url=https://www.flickr.com/photos/111853254@N07/][/IMG]

__________________
Regards

Swampy

JGC Overland CRD, Deep Cherry Red

"I'm just here for the biscuits!"
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 07-24-2016, 10:21 PM
Sege's Avatar
Member
My Jeep: 2012 3.0L WK2
 
Join Date: May 2011
Location: Perth Western Australia
Posts: 204
Thanks: 31
Thanked 5 Times in 5 Posts
Rep Power: 2382
Sege is on a distinguished road
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

Funny you say that I had what might have been a similar experience on Sunday the noise initially almost sounded like an alternator bearing whistle but was constant and mine got louder at idle - stopped car started again and went away Hmmmm....
Reply With Quote
The Following User Says Thank You to Sege For This Useful Post:
  #3  
Old 07-25-2016, 08:23 PM
Swampy's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Jul 2011
Location: Oakford, Western Australia
Posts: 758
Thanks: 3
Thanked 82 Times in 60 Posts
Rep Power: 35640
Swampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond repute
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

That's interesting. Unfortunately mine didn't stop with a restart. May remove the cable ties on a couple of weeks and see if it is still an issue.


Sent from my iPhone using JeepGarage
__________________
Regards

Swampy

JGC Overland CRD, Deep Cherry Red

"I'm just here for the biscuits!"
Reply With Quote
  #4  
Old 07-28-2016, 04:28 AM
zzkazu's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Jun 2011
Location: Canberra, ACT
Posts: 501
Thanks: 9
Thanked 11 Times in 10 Posts
Rep Power: 2698
zzkazu has a reputation beyond reputezzkazu has a reputation beyond reputezzkazu has a reputation beyond reputezzkazu has a reputation beyond repute
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

Yes, I reported the same in a thread a couple of weeks before you.

MY12 Engine Harmonic Noise

Mine currently has disappeared.
Reply With Quote
  #5  
Old 07-28-2016, 08:08 AM
Swampy's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Jul 2011
Location: Oakford, Western Australia
Posts: 758
Thanks: 3
Thanked 82 Times in 60 Posts
Rep Power: 35640
Swampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond repute
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

Zzkazu, thanks for the message. Good to hear that your noise has disappeared. I'll leave the zip ties in place till the next service and try it without at that time.


Sent from my iPhone using JeepGarage
__________________
Regards

Swampy

JGC Overland CRD, Deep Cherry Red

"I'm just here for the biscuits!"
Reply With Quote
  #6  
Old 07-29-2016, 04:21 AM
zzkazu's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Jun 2011
Location: Canberra, ACT
Posts: 501
Thanks: 9
Thanked 11 Times in 10 Posts
Rep Power: 2698
zzkazu has a reputation beyond reputezzkazu has a reputation beyond reputezzkazu has a reputation beyond reputezzkazu has a reputation beyond repute
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

Swampy does make me wonder as it seems to be a systemic issue with so many reports.
Reply With Quote
  #7  
Old 08-04-2016, 10:14 PM
Member
My Jeep: 2011 3.0L WK2
 
Join Date: Aug 2011
Location: Brisbane Australia
Posts: 74
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 2168
Baxter is on a distinguished road
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

Hi All
Mine has started this strange noise also , only happens when the fuel tank is low , if I fill up it goes away. I think a fuel line is vibrating against something, mine is very noisy in the car and less outside (just clicked over 100,000klms).
Reply With Quote
  #8  
Old 08-05-2016, 04:24 PM
Swampy's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Jul 2011
Location: Oakford, Western Australia
Posts: 758
Thanks: 3
Thanked 82 Times in 60 Posts
Rep Power: 35640
Swampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond repute
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

Quote:
Originally Posted by Baxter View Post
Hi All
Mine has started this strange noise also , only happens when the fuel tank is low , if I fill up it goes away. I think a fuel line is vibrating against something, mine is very noisy in the car and less outside (just clicked over 100,000klms).
I can't recall the fuel tank level when ours started making the noise. Just try and grab the fuel return pipe while idling as per my photo further above and see if stops or if it is vibrating / humming.
__________________
Regards

Swampy

JGC Overland CRD, Deep Cherry Red

"I'm just here for the biscuits!"
Reply With Quote
  #9  
Old 08-15-2016, 10:08 PM
Member
My Jeep: 2011 3.0L WK2
 
Join Date: Aug 2011
Location: Brisbane Australia
Posts: 74
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 2168
Baxter is on a distinguished road
Re: Harmonic Noise High Pressure Diesel Injector Pump Return

Swampy
Yes I can confirm mine is also the fuel pipes , only happens when the fuel tank is near empty ,appears worse under the car near passengers feet., very strange. Perhaps an isolation rubber has failed and the pipes touch the car frame when there is less weight in the fuel tanks.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Harmonic noise coming from engine... Sean Export Grand Cherokee 2011+ 179 03-31-2017 01:42 AM
Major EcoDiesel Injector Pump Issue robert j. yates 2014+ Jeep Grand Cherokee Ecodiesel 3.0 32 03-27-2016 02:03 PM
3.0 injector pump replacment strokedtj Troubleshooting/Problems Discussion 0 08-14-2014 08:32 AM
liberty 2.8 crd injector pump jeepjerry Tech Tips DIY/How To 0 01-09-2014 05:10 AM
Harmonic noise from engine.. Sean Export Grand Cherokee 2011+ 0 07-30-2012 06:05 AM

» Premium Vendor Showcase
Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 08:33 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.