New 2017 pinging? - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Engine Performance/Intakes/Exhausts

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 09-21-2016, 06:21 PM
vnbWK2's Avatar
Member
 
Join Date: Sep 2010
Posts: 532
Thanks: 10
Thanked 20 Times in 16 Posts
Rep Power: 2799
vnbWK2 is on a distinguished road
New 2017 pinging?

So for my 2017 Grand Cherokee I've had for a few weeks I've noticed some engine noise and realized it's pinging noise. It's noticeable on incline's under normal acceleration. It's definitely a pinging sound because I've had this happen before on my older Jeep. I'm using 87 octane which is what is recommended on the 3.6 V6 engine. I've tried Shell, Exxon and Lukoil all 87 reg. How can a brand new engine already ping? This did not happen on my 2014 V6 although the new engine has been refined so it's a bit different. Has anyone experience pinging on the 2017 V6? Can anyone please test this out when you have a chance?

__________________
2017 WK2 Limited 3.6L - Billet Silver/Black

(O||||||||O)
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 09-21-2016, 06:30 PM
hdrolling's Avatar
Member
My Jeep: 2017 3.6L WK2
 
Join Date: Sep 2016
Location: Grays Creek, NC
Posts: 230
Thanks: 2
Thanked 44 Times in 38 Posts
Rep Power: 324
hdrolling is on a distinguished road
Garage
Re: New 2017 pinging?

No pinging here, but we have only had to fill up once since we bought it. We use 87
__________________
2017 WK2 Summit, 4WD, 3.6 L, Rear DVD, Velvet Red, Dark Sienna Brown/Black Interior. Tazer, SB
Retired Army, Airborne Infantry (NH Native)
Reply With Quote
  #3  
Old 09-21-2016, 06:41 PM
bill_de's Avatar
Premium Member
My Jeep: 2017 5.7L WK2
 
Join Date: Sep 2012
Posts: 8,237
Thanks: 672
Thanked 926 Times in 737 Posts
Rep Power: 1804902
bill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond repute
Re: New 2017 pinging?

Try sport mode and see if it makes a difference. Eco mode may not be up/down shifting at the right points.


If you have the EVIC set to show the gear selector, like the '14 if you look carefully you can see what gear you are in although the indicator is very faint. Make a note when you hear the pinging.


--
__________________
If you need a shoulder to cry on ...
... pull over to the side of the road!

Reply With Quote
  #4  
Old 09-21-2016, 07:19 PM
vnbWK2's Avatar
Member
 
Join Date: Sep 2010
Posts: 532
Thanks: 10
Thanked 20 Times in 16 Posts
Rep Power: 2799
vnbWK2 is on a distinguished road
Re: New 2017 pinging?

ECO mode is off. When I hear the ping I was driving up hill in 4th gear with light to regular throttle 30mph. I don't notice pinging under hard acceleration. Why would a brand new engine ping though?

One other thing, not sure if it is related. Upon starting the engine when cold, during the first 20 seconds or so I hear a crackling sound as if the exhaust or heatsheilds are expanding/heating up. Perhaps that sound I hear is also pinging? I wouldn't think so at idle. I'll try to record it.

Maybe I'll try 89 octane at my next fill up.
__________________
2017 WK2 Limited 3.6L - Billet Silver/Black

(O||||||||O)
Reply With Quote
  #5  
Old 09-21-2016, 11:13 PM
hdrolling's Avatar
Member
My Jeep: 2017 3.6L WK2
 
Join Date: Sep 2016
Location: Grays Creek, NC
Posts: 230
Thanks: 2
Thanked 44 Times in 38 Posts
Rep Power: 324
hdrolling is on a distinguished road
Garage
Re: New 2017 pinging?

Quote:
Originally Posted by vnbWK2 View Post
One other thing, not sure if it is related. Upon starting the engine when cold, during the first 20 seconds or so I hear a crackling sound as if the exhaust or heatsheilds are expanding/heating up.
Now that we do hear, but the other 17 summit we tested in another color did the same so we assumed it was normal. The dealer even started a 17 overland to see and it made the same sound, hard to argue with them when they all did it.
__________________
2017 WK2 Summit, 4WD, 3.6 L, Rear DVD, Velvet Red, Dark Sienna Brown/Black Interior. Tazer, SB
Retired Army, Airborne Infantry (NH Native)
Reply With Quote
  #6  
Old 09-21-2016, 11:49 PM
vnbWK2's Avatar
Member
 
Join Date: Sep 2010
Posts: 532
Thanks: 10
Thanked 20 Times in 16 Posts
Rep Power: 2799
vnbWK2 is on a distinguished road
Does the 2017 v6 have a knock sensor?
__________________
2017 WK2 Limited 3.6L - Billet Silver/Black

(O||||||||O)
Reply With Quote
  #7  
Old 09-22-2016, 05:15 AM
Michael Plummer's Avatar
Member
My Jeep: 2014 5.7L WK2
 
Join Date: Mar 2016
Location: Massachusetts
Posts: 151
Thanks: 12
Thanked 81 Times in 44 Posts
Rep Power: 16020
Michael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond repute
Re: New 2017 pinging?

Quote:
Originally Posted by vnbWK2 View Post
So for my 2017 Grand Cherokee I've had for a few weeks I've noticed some engine noise and realized it's pinging noise. It's noticeable on incline's under normal acceleration. It's definitely a pinging sound because I've had this happen before on my older Jeep. I'm using 87 octane which is what is recommended on the 3.6 V6 engine. I've tried Shell, Exxon and Lukoil all 87 reg. How can a brand new engine already ping? This did not happen on my 2014 V6 although the new engine has been refined so it's a bit different.
The easiest thing to try is higher octane. Try filling up with 89 or 91 octane to see if that helps.
__________________
2014 Jeep CG 5.7L Overland: 304rwhp & 337rwtq & 14.58@95.18 (K&N CAI, Diablosport inTune, Pedal Commander)
1994 Mustang Saleen: 890rwhp & 771rwtq
Reply With Quote
  #8  
Old 09-22-2016, 05:24 AM
Michael Plummer's Avatar
Member
My Jeep: 2014 5.7L WK2
 
Join Date: Mar 2016
Location: Massachusetts
Posts: 151
Thanks: 12
Thanked 81 Times in 44 Posts
Rep Power: 16020
Michael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond repute
Re: New 2017 pinging?

Q) Upon starting the engine when cold, during the first 20 seconds or so I hear a crackling sound as if the exhaust or heatsheilds are expanding/heating up.
A) It's exhaust gases and nothing to worry about.

Q) Perhaps that sound I hear is also pinging? I wouldn't think so at idle. I'll try to record it.
A) Its not pinging. At idle your load doesn't change, so why would it stop after a set amount of time?

Q) Maybe I'll try 89 octane at my next fill up.
A) Easiest thing to do and good luck.

See ya
Michael Plummer
__________________
2014 Jeep CG 5.7L Overland: 304rwhp & 337rwtq & 14.58@95.18 (K&N CAI, Diablosport inTune, Pedal Commander)
1994 Mustang Saleen: 890rwhp & 771rwtq
Reply With Quote
  #9  
Old 09-23-2016, 03:45 PM
jeep12joe's Avatar
Premium Member
My Jeep: 2012 5.7L WK2
 
Join Date: Apr 2016
Posts: 89
Thanks: 24
Thanked 9 Times in 9 Posts
Rep Power: 325
jeep12joe is on a distinguished road
Garage
Re: New 2017 pinging?

Quote:
Originally Posted by Michael Plummer View Post
The easiest thing to try is higher octane. Try filling up with 89 or 91 octane to see if that helps.
Seems like a waste of money to put higher octane into an engine designed for 87. You shouldn't have to do that for it to run properly.
__________________
2012 Overland Summit, Rugged Brown.

Reply With Quote
  #10  
Old 09-23-2016, 04:04 PM
vnbWK2's Avatar
Member
 
Join Date: Sep 2010
Posts: 532
Thanks: 10
Thanked 20 Times in 16 Posts
Rep Power: 2799
vnbWK2 is on a distinguished road
Re: New 2017 pinging?

Quote:
Originally Posted by jeep12joe View Post
Seems like a waste of money to put higher octane into an engine designed for 87. You shouldn't have to do that for it to run properly.
I agree. That's why I'm hoping it was just bad gas. The 2017 owners manual actually states that a little knocking is normal. Really?

While operating on gasoline with an octane number of
87, hearing a light knocking sound from the engine is not
a cause for concern.
However, if the engine is heard
making a heavy knocking sound, see your dealer immediately.
Use of gasoline with an octane number lower
than 87 can cause engine failure and may void or not be
covered by the New Vehicle Limited Warranty.
__________________
2017 WK2 Limited 3.6L - Billet Silver/Black

(O||||||||O)
Reply With Quote
  #11  
Old 09-23-2016, 04:43 PM
Michael Plummer's Avatar
Member
My Jeep: 2014 5.7L WK2
 
Join Date: Mar 2016
Location: Massachusetts
Posts: 151
Thanks: 12
Thanked 81 Times in 44 Posts
Rep Power: 16020
Michael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond reputeMichael Plummer has a reputation beyond repute
Re: New 2017 pinging?

Quote:
Originally Posted by jeep12joe View Post
Seems like a waste of money to put higher octane into an engine designed for 87. You shouldn't have to do that for it to run properly.
Not sure what the cost of a gallon of gas is where you live but we're not talking about a huge difference in price from 87 octane to 89 or 91 octane.

In the back of my owner's manual for my 2104 Jeep 5.7L under "Maintaining your Vehicle" it states the following. "We recommend you use of 89 octane or higher for optimum performance but 87 octane is acceptable". I'm able to datalog the activity of my knock sensors and I can tell you the knock sensors are maxed out with 87 octane. The use of 89 or 91 there is less activity from the knock sensors.

If what you're hearing is knock, you don't have any idea on how severe it is or isn't and for a few dollars more it wouldn't hurt to confirm if it's knock due to lower octane.

Just my opinion and the bottom line is this it's your money and your vehicle do whatever you like.
Michael Plummer
__________________
2014 Jeep CG 5.7L Overland: 304rwhp & 337rwtq & 14.58@95.18 (K&N CAI, Diablosport inTune, Pedal Commander)
1994 Mustang Saleen: 890rwhp & 771rwtq
Reply With Quote
  #12  
Old 09-23-2016, 05:29 PM
jeep12joe's Avatar
Premium Member
My Jeep: 2012 5.7L WK2
 
Join Date: Apr 2016
Posts: 89
Thanks: 24
Thanked 9 Times in 9 Posts
Rep Power: 325
jeep12joe is on a distinguished road
Garage
Re: New 2017 pinging?

Quote:
Originally Posted by Michael Plummer View Post
Not sure what the cost of a gallon of gas is where you live but we're not talking about a huge difference in price from 87 octane to 89 or 91 octane.

In the back of my owner's manual for my 2104 Jeep 5.7L under "Maintaining your Vehicle" it states the following. "We recommend you use of 89 octane or higher for optimum performance but 87 octane is acceptable". I'm able to datalog the activity of my knock sensors and I can tell you the knock sensors are maxed out with 87 octane. The use of 89 or 91 there is less activity from the knock sensors.

If what you're hearing is knock, you don't have any idea on how severe it is or isn't and for a few dollars more it wouldn't hurt to confirm if it's knock due to lower octane.

Just my opinion and the bottom line is this it's your money and your vehicle do whatever you like.
Michael Plummer
If the vehicle in question had a Hemi I would completely agree with you, run 89 as recommended and forget it. However, the OP's vehicle has the V6. The V6 is designed (and recommended) to run on 87. Putting anything more than that in is a waste. While running higher octane may put a bandaid on the problem he's having, ultimately he shouldn't need to do that for his brand new engine to perform as intended.
__________________
2012 Overland Summit, Rugged Brown.

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
2017 Cherokee - What's New Milous 2014+ Cherokee-KL 35 10-28-2016 03:46 PM
Gave up waiting for MY 2017 Car Play and Bought a 2017 Summit Today mswlogo Grand Cherokee - WK2 - 48 09-07-2016 04:25 PM
New Member - Looking at ordering a 2017 JGC Overland 4x4 diesel monstersinc1 New Members - Welcome! 2 08-13-2016 06:57 AM
Buying a used 2014 Range Rover Sport HSE V6 versus a new 2017 JGC Summit Sleestak Grand Cherokee - WK2 - 21 05-22-2016 08:04 PM
2012 3.6L pinging/knocking mixer440 Trouble Shooting/Problems/Service 2 11-09-2012 04:42 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 08:58 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, 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.