Hi All,
So, even after lift pump has been installed, I'm still experiencing the same issue with a rough idle. The weird part is that it only occurs after the vehicle has been warmed up--it purrs like a sleeping kitten when I start it in the morning. Is this a case of dirty injectors?
Here you can see/hear it and watch as my lights flicker here:
https://youtu.be/UU3duRbwlZAThis is an enhanced audio perspective from inside:
https://youtu.be/YCf0CHl49DwPertinent Info:
• Runs great at any other speed other than idle.
• "Chirping" Sounding coming from alternator when it chugs like this--research indicates it's a pulley needing replacing.
• Added Cummins in-tank lift pump--I feel like it idles smoother, but I still have the stumbling on warm up.
• Added 5 ounces of
SeaFoam to approximately 5 gallons in tank along with their suggested "hot soak" treatment--no change.
• RPM's are 756-760 according the EngineLink App.
• Ambient air temps are around 70-80 degrees.
• I cleaned the MAP sensor--very little fouling due to ProVent. No change.
Referencing this thread:
viewtopic.php?f=5&t=86614...I jiggled the wires under the injectors (no change) and also disconnected each injectors' electrical connection one at a time in order to see if one was "worse" than the other: no change other than the engine really started to stumble when I did that.
What gives?!?!
_________________
2006 CRD w/99,300 miles F31 from a previous life
EHM @ 42K, ProVent @ 79K
GDE Eco Tune & TCM @ 46K
Engine mounts replaced @ 55k/93k, Timing Belt @ 90k
Lift Pump @ 97kOME Lift, 1.5''
Kenwood TM-V71 Ham Radio / Cobra C75WX CB
Surf Racks