Surging?

[chargedc5]

When my truck is cold it seems to really chug until it warms up and even a couple miles down the road I get on the Highway and if I set the cruise on 60 it will surge/chug until I get on it or back off the cruise. It seems to only last until it warms up but now it seems a little more common. Is this normal or could it be the tune

Daily driver with of 5-6 mile trips

Changed oil/filter
Changed fuel filter(s) too

06 f250 w/innovative custom tune

[PGreenSVT]

Check your FICM voltage. Classic behavior for a FICM on its way out. FICM should maintain 48v while running and starting. If it drops below 46v your FICM is bad and needs to be replaced. If it is bad get a Swamps Diesel 58v replacement. Much better and cheaper than the OEM Ford rebuilt part.

[chargedc5]

Thank you for the response but what is the FICM and where is it?

[xpbprox]

Fuel injection control module, it's mounted to the valve cover on the passenger side I believe. It's about the size of an iPhone but thicker

[05lariat]

It's a whole lot bigger than an iPhone

[PGreenSVT]

Originally Posted by chargedc5

Thank you for the response but what is the FICM and where is it?

As stated above it is on the driver side valve cover.remove the small inspection plate and there should be 4 pins. With a Digital Multi Meter set to volts check voltage by putting one probe on the bottom pin closest to the fender and the other probe on the neg. terminal of the battery. Check while running and cranking. It should not fall below 46v. If it does take the FICM off and send it to Swamps Diesel for a 58v rebuild. It is cheaper and more robust than a Ford replacement.

[chargedc5]

Awesome guys..thank you all very much! Do you know how much that should be and I take it that the truck cannot run while its being fixed?

[PGreenSVT]

Correct, the truck will be down if you send them your FICM. The Cost for the Swamps 58v FICM is $450 if you send yours or $800 with a $350 refundable when you send your core in if you just buy one that is already done. PHP's programming is another $150 if you want to go that route.

circuitboardmedics.com also rebuild FICMs. Their standard 48v repair is $325. They will also do a voltage upgrade but I don't know the cost.

[Evil Eye]

Originally Posted by PGreenSVT

circuitboardmedics.com also rebuild FICMs. Their standard 48v repair is $325. They will also do a voltage upgrade but I don't know the cost.

Thanks, Mitch! I checked out that site and if my wife's washing machine ever goes belly up, it sounds like they can fix the circuit board for that too!

[PGreenSVT]

Originally Posted by Evil Eye

Thanks, Mitch! I checked out that site and if my wife's washing machine ever goes belly up, it sounds like they can fix the circuit board for that too!

We aim to please!