Blue Oval Guy
New member
04' Excursion. Bone stock.
The throttle surges at random in any condition. Hot, cold, in gear, in park, cruising, accelerating, etc. Sometimes dies while coasting or stopped in gear. When it acts up, the idle gets choppy or "crispy". Sort of like it has a big cam.
You can be cruising and feel the surge come on and go away while you can hear the tone of the motor change from smooth (no power) to crispy (good power).
No codes right now.
These symptoms have been around awhile, but are progressively getting worse. Acts like bad ICP/IPR. I saw fluctuations between desired ICP and actual ICP on AE. Changed ICP. Old one was dry but symptoms went away for a couple weeks.
Fast forward a couple weeks, symptoms return. Took a look at the EBP for fun. Cleaned tube and sensor. Tube wasn't very dirty at all. Symptoms go away for another week or two.
Symptoms come back. Changed EBP. No change.
On AE, FICM voltage runs a steady 47.5-48.0v through all the surging and "crispiness".
Has black smoke out the tailpipe when its acting up.
ICP (desired and actual) are rock solid through all of this.
TPS is steady. Reads 0% at idle with or without symptoms.
Truck starts right away, hot or cold.
I'm running out of ideas. Any help would be greatly appreciated. This thing is getting dangerous for my wife to drive the kids around in.
The throttle surges at random in any condition. Hot, cold, in gear, in park, cruising, accelerating, etc. Sometimes dies while coasting or stopped in gear. When it acts up, the idle gets choppy or "crispy". Sort of like it has a big cam.
You can be cruising and feel the surge come on and go away while you can hear the tone of the motor change from smooth (no power) to crispy (good power).
No codes right now.
These symptoms have been around awhile, but are progressively getting worse. Acts like bad ICP/IPR. I saw fluctuations between desired ICP and actual ICP on AE. Changed ICP. Old one was dry but symptoms went away for a couple weeks.
Fast forward a couple weeks, symptoms return. Took a look at the EBP for fun. Cleaned tube and sensor. Tube wasn't very dirty at all. Symptoms go away for another week or two.
Symptoms come back. Changed EBP. No change.
On AE, FICM voltage runs a steady 47.5-48.0v through all the surging and "crispiness".
Has black smoke out the tailpipe when its acting up.
ICP (desired and actual) are rock solid through all of this.
TPS is steady. Reads 0% at idle with or without symptoms.
Truck starts right away, hot or cold.
I'm running out of ideas. Any help would be greatly appreciated. This thing is getting dangerous for my wife to drive the kids around in.
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