I have a 2006 F-250 w/127,000 miles

started running bad a month or so ago, it surges heavily going down the road you can hear the motor and then silence, more motor then silence (a very weird power surge)and also the turbo guage go up and down, and when it does, it honks out black smoke. It will barely do 65 mph. when I let off you can hear the turbo shatter like it has too much back pressure. I can hold it at one speed and it runs like crap, it surges heavily.

the engine light came on and codes po299 and po611 came up, they are low boost and loss of FICM power or other internal FICM failure

I took out the VGT valve and its not stuck but cleaned it anyway, new fuel filters,I cleaned the egr valve,

I need advice, the pcm is $1000, VGT $350, I dont want to just replace everything. my next step is taking the turbo apart and trying to clean the vanes, and possibly the egr cooler.

I have a nice truck and am afraid to drive it down the road if fear something is going to blow into peices

 

oh and I live in FLorida "the bikini state" no cold wether problems here

 

The P0611 usually means that the FICM is on it's way out.

 

And P0299 means turbo under and/or over boost. Start with the cheapest 1st if you don't want to take it to the dealer for a complete scan. They can pick up some dtc's that the home scanners can't.

 

today its running ok as weird as that sounds, I am leaning towards the FICM as well. for it to run good and not the next day, it has to be electrical, I guess.

 

I actually had it scanned at a shop that my friend ownes and he flashed the computer as well to see if the codes come back in a day or two, later I read you shouldn't flash the codes out for some reason.

 

What about disconneting both batteries turning on the headlights for approx 30-45 sec to allow capacitors to clear...reconnect both batteries and fire it up...maybe this could help clear some glitch?

 

I will try that right now

 

I would definately load test each battery while you have them (both) fully disconnected and clean all the terminals and wire connectors thouroughly and apply a thin coat of grape jelly (battery corrosion resistance).

 

I actually have a load tester and will do just that

 

heres the deal the p0299 is lack of boost. lack of boost dtc will set with fuel/injector type of issues. the truck only knowsthat it wants boost and trys to make it but it cant and thats what a p0299 is
the reason it cant is the p0611 dtc wich causes a lack of fuel to the cyclinders . normally is a failed ficm but can be caused by wire harness issues or a relay

 

what you wrote makes very good sence, I am going to check the harness b/c I just put 20 miles on it and it ran perfectly,I got one block from my house on the way home and a small sputter came out. Perhaps the FICM is going out and or the harness is rubbing and causing a short somewhere. I did read that 2005 and under had a harness problem with it rubbing swome shield and it was actually a recall, no law says that the 06 model couldn't as well.

you guys are great help. I really do appreciate all of the input. Jo

 

well the 06 harness is routed a little different. the recall was on 03/04 trucks. one of the most common areas is were the ccv tube presses the harness aginst the manifold. also check at the valve cover and make sure there is a bolt and not a stud under the ficm have seen incorrect bolt instalation as a cause too.

Boy I do hope it made sense as I make a damn good living on fix these trucks

 

I took it to the local dealer and their computer said FICM module as expected. I got home and took it out, Hoping the plugs were corroded. Nothing, it looked brand new, I put grease on all three plugs and reinstalled the module, and it has ran perfect for over 200 miles. The truck has made a 100% turn around and all I can figure that since the truck has 127,000 and one side of the module puts out high voltage, the prongs constantly get hot and simply lost continuity.

here is that catch,if they would have installed a new FICM it would have been problem fixed as well and I would have known no difference. I hope this thread helps someone b/c I just saved $815.00 by greasing my plugs.

thanks-Jo

 

Have you checked to see if you're still getting the P0611 code?