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 > 3RD Generation Dodge Ram 2002 to 2008 Dodge Ram Trucks > Powertrain > 3.7L PowerTech V6 Specific Topics


Notices


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

Reply
 
Thread Tools
  #1  
Old 02-27-2013, 04:19 PM
HorsePullinDodge HorsePullinDodge is offline
Dodge Ram Forum Newcomer
 
Join Date: Dec 2010
Age: 53
Posts: 7
Gender: Male
Vehicle: 2011 Dodge Ram
Trim Level: not sure
Color: metallic brown
Engine: 2008-???? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 0
Rep:12
HorsePullinDodge is on a distinguished road
Default Persisent Misfire in Cylinder 5

Prior to getting a 'rebuilt' installed in my 02 Ram 1500 3.7, (the original engine ran ok, but a host of issues indicated a new engine was needed) I got a persistent code for 'misfire in cy 5'.....
Now that the rebuilt is in, the same code continues. I've replaced the coil, injector and plug in cyl 5, to no avail. We're going to pressurize the top end with a 'smoke machine' to see if the plenum is cracked. While the engine runs smoothly under load, it idles a little to roughly for my liking. I'm told that 'all V6's idle roughly, to be expected'.......
Anyone else have this problem with their 3.7's?....If the 'top end' isn't leaking, what else can we check? Any ideas?
thanks
Reply With Quote
Sponsored links
  #2  
Old 02-27-2013, 04:25 PM
RamTech's Avatar
RamTech RamTech is offline
Dodge Ram Forum Senior Member!

 
Join Date: Nov 2009
Location: Johnson City, TN
Age: 44
Posts: 12,120
Gender: Male
Vehicle: 2004 Dakota Club Cab 4X4
Trim Level: SXT
Color: Bright Silver
Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
Rep Power: 15
Rep:1824
RamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant future
Default

My 3.7 idles fairly smooth, but many V6's have vibration issues. This is why the 3.7 has a balance shaft and the 4.7 doesn't even thought they're practically identical in other aspects. If there's no manifold issues found, I would look into the wiring for the #5 coil and injector or even a PCM issue.
Reply With Quote
  #3  
Old 03-12-2013, 12:29 PM
HorsePullinDodge HorsePullinDodge is offline
Dodge Ram Forum Newcomer
 
Join Date: Dec 2010
Age: 53
Posts: 7
Gender: Male
Vehicle: 2011 Dodge Ram
Trim Level: not sure
Color: metallic brown
Engine: 2008-???? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 0
Rep:12
HorsePullinDodge is on a distinguished road
Default

Update......3/12/13.....
All injectors & coils checked out ok, but problem persisted. Took to another mechanic, who agreed that all checked out ok, but found (how, I don't know....amazing) that a 'particular injector' didn't 'play well' with another cylinders coil.....(meaning, the injector and coil were on two different cylinders, neither were cyl 5!!!)........Once he replaced the 'bad (but good!) injector & coil.....Its running fine, without the original #5 misfire.......
Strange but true.......
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 02:56 AM.


= 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