Join Date: Mar 2010
Location: Oregon WI
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Got a 2006 and it's very sparatic but sometimes while under light accelaration it will surge and rpms go up. It's like you pushed on the throttle more and going faster but my foot is in the same throttle position. and sometimes while sitting at a red light it will idle high or even coasting to a red light it will have a high idle. It will also do it at 70mph with cruise control on. It is very erratic will do it every now and then, it might act up a couple times a day and then be normal for a day or two and then do it again. I pulled the ICP plug and there is no oil on the pigtail and I can't see any damage on the wires. I replaced the accel pedal/TPS asy and no change. My main question is will a ICP go bad even if it's not leaking oil? FICM never goes any lower than 47.5 ICP is good at idle and WOT and so is the IPR. I haven't been able to see a change in the ICP or the IPR when the truck is acting weird, it could be changing but by the time I look up at the scan gauge everything appears normal.
I am the original owner I bought the truck brand new and it has 136,000. At 96,000 I had head gaskets, studs, oil cooler, egr delete, stc fitting, blue spring, coolant filter, 4" straight pipe, and all the other updates done at that time. Also oil has always been changed every 5000miles never more than 6000miles per oil change. Fuel filters are done every 10,000 to 12,000miles.
Truck has been running trouble free for the past 3 years or so. When the truck was under warranty it had FICM replaced twiced, the VGT once, the throttle pedal asy, and had a major oil leak fixed which was the bed plate.
Last edited by smokejoke; 06-17-2014 at 02:40 PM.
Reason: forgot to add