RPM drop/surge after coming to stop?

[cubinzkid]

Hey guys, trying to sort this out cause it's driving me insane. The issue I'm having is when the truck is warm, i am driving, and come to a stop light, and after fully stopping and sitting my truck will surge. 50-100 RPM (620-715) but the second I get going it goes away. It doesn't always do it, just sometimes. I've searched and all I could find is people's trucks doing it all the time, but I can't find anything to help. Could this be ICP? IPR? Oil gets changed every 3000 miles. Seems to do it more the closer I get to the 3000 mile interval. Any help would be appreciated!

 

[79jasper]

Could be the ICP. Could be failing fuel pressure.
But with some trucks this seems to be the norm.

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[leojr]

Are you checking your oil level? Some unusual things happen when the oil is about a gallon or so low.

 

[IDIoit]

have you scanned it?

 

[cubinzkid]

Oil is good, scanned as far as looking for codes or more like a buzz test? I watch my IPR pres. on my monitor, it correlates with the dropping/surging RPM. That's what made me think possibly sensor?

 

[greenskeeper]

unplug ICP sensor and see if it still does it. This will default to preset values on the oil pressure. Is there oil in the electrical side of the sensor?