DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Help Zone - Dodge Ram Problems, Complaints, & Solutions - Maintenance & Re > 4TH Generation Dodge Ram 2009+ Dodge Ram Trucks > Powertrain > 5.7L (345 cu in) HEMI V8 Specific Topics


Notices


Latest Vendor News
AutoAnything
Addictive Desert Designs!
United Radio
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 08-12-2013, 12:40 AM
09HemiCrew 09HemiCrew is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2012
Location: MN
Age: 31
Posts: 99
Gender: Male
Vehicle: 2009 Dodge Ram
Trim Level: Laramie
Color: Brilliant Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 3
Rep:75
09HemiCrew will become famous soon enough
Default Lean on two cylinders

So, I was replacing my plugs yesterday and noticed cylinders #4 and 5 appear to be running very lean relative to the other cylinders. I have noticed a decent stumble while under load (doesn't matter if MDS is on or not). There is no CEL on. I will try to get some pics of the plugs tomorrow. They are bad enough, I can't believe there is no CEL or major performance problems. I am getting a Trinity in the next couple of days, so I will be able to do some monitoring. I am tempted to get a couple injectors or at least swap the two lean cylinders to different locations to see if the condition follows. But, I would like to watch my knock, timing, etc. first. Anyone else ever see this? Thanks.

P.S. the truck has about 85k on it. I had Autolite Iridium plugs in it for the past 10k miles. After reading about not using anything but OEM plugs, I thought maybe the Autolites where causing the stumbling.
__________________
2009 Crew Cab 4x4 Laramie - 4.56 gears, Detroit Truetrac, Diablosport Trinity
Reply With Quote
Sponsored links
  #2  
Old 08-13-2013, 12:01 AM
09HemiCrew 09HemiCrew is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2012
Location: MN
Age: 31
Posts: 99
Gender: Male
Vehicle: 2009 Dodge Ram
Trim Level: Laramie
Color: Brilliant Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 3
Rep:75
09HemiCrew will become famous soon enough
Default

Well, I got the Trinity installed tonight and went for a drive. The stumble I have coincides directly with knock/timing retard. I got up to -9 deg of knock retard and it would go to about -1.5 and up to about 3 at light-medium load, i.e. going up a small hill without downshifting. I did have the 87 performance tune loaded, but the feeling was exactly the same as without the tune installed. Here are a couple of photos of the plugs. Doesn't show up as good as in person, but you can see the ones that are white are out of cylinders 4 & 5. Anyone have any other ideas?


__________________
2009 Crew Cab 4x4 Laramie - 4.56 gears, Detroit Truetrac, Diablosport Trinity
Reply With Quote
  #3  
Old 08-13-2013, 12:03 AM
Arth's Avatar
Arth Arth is offline
Dodge Ram Forum Member


 
Join Date: Jan 2012
Location: North Carolina
Posts: 3,131
Gender: Male
Vehicle: 2013 Ram 1500 Crew Cab 4x4
Trim Level: Laramie
Color: Mineral Gray Metallic
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 8
Rep:2008
Arth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond repute
Default

You may want to consider paying for a custom tune. I am currently running Hemifever tuning and I have 0 knock. I get MAYBE 1 degree here and there at random but nothing consistent like it used to be.

I had a lot of problems with the ST/LT knock on the canned tunes.
__________________

Chrome... in moderation.
Reply With Quote
  #4  
Old 08-13-2013, 12:11 AM
09HemiCrew 09HemiCrew is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2012
Location: MN
Age: 31
Posts: 99
Gender: Male
Vehicle: 2009 Dodge Ram
Trim Level: Laramie
Color: Brilliant Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 3
Rep:75
09HemiCrew will become famous soon enough
Default

Thanks, I should probably put it back to the stock tune and do a little monitoring to see if it is similar with the knock/stumble. I just couldn't NOT install the tune when I got it... It definitely feels better performance wise, but this stumble is really bothering me. I will have to try it again with the MDS turned off and stock tune to make sure I am not just getting knock because of the 87 canned tune. The stumble feels the exact same as before I had the tune installed and the two cylinders that appear leaner than the rest have me thinking something else might be up. But, who knows...
__________________
2009 Crew Cab 4x4 Laramie - 4.56 gears, Detroit Truetrac, Diablosport Trinity
Reply With Quote
  #5  
Old 08-13-2013, 12:15 AM
Arth's Avatar
Arth Arth is offline
Dodge Ram Forum Member


 
Join Date: Jan 2012
Location: North Carolina
Posts: 3,131
Gender: Male
Vehicle: 2013 Ram 1500 Crew Cab 4x4
Trim Level: Laramie
Color: Mineral Gray Metallic
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 8
Rep:2008
Arth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond reputeArth has a reputation beyond repute
Default

If you had this before the tune then defiantly something is up.

I would be curious about injectors being dirty at that point. Might not be to bad of an idea to run some kind of injector cleaner through the system.

I agree to monitor on the stock tune. If the symptoms carry over but not as bad then the tune is partly to blame. However I again agree you may have something more going on here.

Quote:
Originally Posted by 09HemiCrew View Post
Thanks, I should probably put it back to the stock tune and do a little monitoring to see if it is similar with the knock/stumble. I just couldn't NOT install the tune when I got it... It definitely feels better performance wise, but this stumble is really bothering me. I will have to try it again with the MDS turned off and stock tune to make sure I am not just getting knock because of the 87 canned tune. The stumble feels the exact same as before I had the tune installed and the two cylinders that appear leaner than the rest have me thinking something else might be up. But, who knows...
__________________

Chrome... in moderation.
Reply With Quote
  #6  
Old 08-17-2013, 05:27 PM
09HemiCrew 09HemiCrew is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2012
Location: MN
Age: 31
Posts: 99
Gender: Male
Vehicle: 2009 Dodge Ram
Trim Level: Laramie
Color: Brilliant Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 3
Rep:75
09HemiCrew will become famous soon enough
Default

Well, ran a couple of bottles of fuel system cleaner through it and have done some monitoring with the stock tune. I am still getting up to 4 deg of knock retard at part throttle. Going to try another flavor of fuel system cleaner through it to see if it helps. Thinking I may have a couple of failing injectors that are beyond a cleaners capability, but we will see.
__________________
2009 Crew Cab 4x4 Laramie - 4.56 gears, Detroit Truetrac, Diablosport Trinity
Reply With Quote
Reply

Bookmarks

Thread Tools

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

Forum Jump


Advertisement






All times are GMT -4. The time now is 06:12 PM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum