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3 year gremlin - Surge, Stumble, Stall
Been 3 summers now chasing this gremlin and now it is unbearable. From march until around Novmber the past 3 years (as long as I have had the truck) i pick up a surge, chug, and stumble. The chug and stumble is now so pronounced that I will stall on occasion when at idle and even had it happen while underway last week.
I now have AE and ran it tonight for about an hour and logged some of this.
What I am seeing is:
ICP voltage of .85ish and during the stumble it will bounce around to .65ish
ICP usage of about 25% at idle bounces as high as 42%
During that time VGT will move around also but not as much
ICP desired at idle is 580 and it will hold at 580 except when bucking and stumbling when ICP will bounce into the 650's
How does this all tie together, Id been thinking HPOP for the past 2 months and wanted to use AE to make sure I was throwing money in the right place...what say you .org?
Current codes were the normal EGR, FICM from the delete and tuning.
Also had EBP and CAM sensor codes but they could be from the stalls along with a bunch of misfire codes. FICM voltage locks in at 48.5 and doesn't move so I'm hoping I eliminated that one. Was also good to see my EOT and ECT in spec.
I have replaced the ICP and CAM sensor in the past year trying to solve this thing. I was also told to ignore the EBP sensor as they aren't used with the flashes I have but I'm tempted to try it cause I'm running out of bullets. It appears to be working but reads 2x higher than what the requested EBP...not sure if that means anything or not.
I'm stumped based on what I've read because mine comes and goes with weather over 60 degrees and I don't have any start issues. It runs the same way tuned or stock.
2004 CC-SB 4x4 King Ranch 8" Skyjacker 17" MT SideBiters, 37" MT Baja MTZ's, Road Armour front and rear winch bumpers, PIAA lights all around, Thule Racks, SCT Livewire IDP Tuning, EGR and Kitty Delete, Under Armour and Wounded Warrior Project Wrap
Turbo and Exhaust on Deck...
Last edited by charkbait; 06-06-2011 at 07:16 PM.