Dakota Forumz banner

2005 Dodge Dakota 4.7 Shaky Idle when warmed up (No CEL)

472 Views 17 Replies 8 Participants Last post by  elitescouter
I just bought my 2005 Dodge Dakota 4.7 couple months ago and I have been going through it to make it a little reliable truck when I need to haul stuff in the bed.

I am noticing somewhat of a rough idle after the truck comes up to warm temps, before that it idles fine. The truck doesn't throw any CEL's or stall, I can just feel it when sitting at a light (regardless if in drive or neutral). I have done the following since I got the truck few months ago.

  • Changed Oil/Filter
  • Flushed Coolant
  • Replaced Sparkplugs (NGK V-Power Copper top, gapped to 0.040)
  • Replaced Evap Solenoid
  • Seafoam cleaning through intake.
  • Fully cleaned throttlebody.
  • Smoke Tested (No leaks detected)
  • Replaced EGR Valve
Other than the idle, truck seems to run fine at WOT and gets up to speed easy.

The only thing that I am noticing is that on 02 Bank 1 Sensor 1, it looks very jaggedy while 02 on Bank 2 Sensor 1 looks smooth. Here is the picture.

Could I have a 02 Sensor that is going out?

Sleeve Handwriting Rectangle Font Slope
See less See more
1 - 1 of 18 Posts
You shouldn't compare graphs from two different scopes/scanners. In any case, both of those pictures show they are for Bank 1 Sensor 1 (which is why you shouldn't compare between two different tools).

What do your short term and long term fuel trims look like (both banks) at idle? If they are running rich, you may have an injector issue.
1 - 1 of 18 Posts