05 hiccup /stutter

[michael_maloney]

05 F350, bottom line, the engine cuts-out for about a half second, completely randomly. So when at RPMs it's just a stutter, at idle it's a stall. After the cut-out, the injectors rattle, like a fresh start. Which component is the one that actually rattles the injectors?

Replaced the ICP sensor (it tested bad) ICP is good, replaced the cam position sensor. A bunch of other stuff is fresh, less than 10000 miles on HPOP, IPR, injectors. FICM voltages are good 13ish in 46.5 to 48 out. Fuel pressure 60lbs.

Any ideas?

Sent from my Moto Z2 using Tapatalk

Sent from my Moto Z2 using Tapatalk

 

[troutwest66]

Have you had it scanned ? Have to start there.

 

[snicklas]

With the injector buzz again, the FICM or PCM is loosing power momentarily. When it gets power again, it runs the inductive heating sequence. It thinks the key has been turned off and back on.

 

[michael_maloney]

Have you had it scanned ? Have to start there.

Oh yeah, no codes.

 

[michael_maloney]

With the injector buzz again, the FICM or PCM is loosing power momentarily. When it gets power again, it runs the inductive heating sequence. It thinks the key has been turned off and back on.

That makes sense. After I posted, I pulled the FICM that I payed a shop to replace awhile back. All the tabs were broken off the plugs and they had put a piece of heater hose between the valve cover and the plugs presumably to hold them in. So gonna start with replacing the harness and see where it goes from there. Thanks.

 

[troutwest66]

Did you get a chance to replace that harness yet?

 

[Steve_in_29]

There are replacement connectors available that you de-pin the old ones and replace them with.

 

[michael_maloney]

All I've done so far is stare at it haha. I've heard of the replacement plugs, I don't relish the thought stickin all those little wires in holes, but I'm gonna try it.

Sent from my Moto Z (2) using Tapatalk

 

[michael_maloney]

Update- I haven't even messed with the plugs, bought a $200 FICM from one of those online places. I could tell that was it before I even started it, the injector buzz was strong and smooth, not like a rattle. Runs great. We'll see for how long.

Sent from my Moto Z (2) using Tapatalk