Bad FICM?
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 111
Likes: 13
Bad FICM?
Alright so yesterday I was on my way home and my truck died going down the highway. It didn't sputter or anything. The engine just quit like I had turned the key off.
So I got it towed home and the first thing I check was to see if it was fuel related. The fuel pump is running and their is fuel in the upper fuel filter bowl.
My next check was to test the FICM using a dvm. With the key on I get 55v and it drops down to 34v as the injectors start buzzing and jumps to 58v after they stop buzzing. Voltage while cranking goes from 58v to 38v.
I'm assuming my FICM is toast causing the engine to die and not start?
Video link below.
So I got it towed home and the first thing I check was to see if it was fuel related. The fuel pump is running and their is fuel in the upper fuel filter bowl.
My next check was to test the FICM using a dvm. With the key on I get 55v and it drops down to 34v as the injectors start buzzing and jumps to 58v after they stop buzzing. Voltage while cranking goes from 58v to 38v.
I'm assuming my FICM is toast causing the engine to die and not start?
Video link below.
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 111
Likes: 13
Also, the engine won't run so I can't see voltage beyond the key on and cranking.
Fleet Owner
Joined: Nov 2003
Posts: 27,900
Likes: 3,617
If your FICM didn't cause your problems, then it will cause them in the future - send it in to be repaired AND upgraded. CircuitBoardMedics.com does good work and is relatively inexpensive.
The SCT tuner doesn't pull codes thoroughly, and it doesn't report EBP accurately, so you need a REAL scan tool. You need ForScan or ForScan Lite, with the appropriate OBDII adapter. Even so, assuming the voltages are accurate, you need the FICM repaired.
The SCT tuner doesn't pull codes thoroughly, and it doesn't report EBP accurately, so you need a REAL scan tool. You need ForScan or ForScan Lite, with the appropriate OBDII adapter. Even so, assuming the voltages are accurate, you need the FICM repaired.
Tuned
Joined: Oct 2022
Posts: 481
Likes: 334
From: The State of Confusion
Fix what you know is broken first. Your FICM is toast, so take care of that issue now before you start chasing your tail with other things. It may end up that you also have other issues to sift through after the new FICM, but it's a process of elimination.
-jokester
-jokester
Hotshot
Joined: Dec 2014
Posts: 17,828
Likes: 3,113
From: Jersey Shore
Trending Topics
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 111
Likes: 13
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
4wd Low
Joined: Mar 2016
Posts: 12
Likes: 1
From: Colorado Springs, CO
The engine should start with those FICM voltages. I've seen them running with 18 volts, not well, but running. You have a different issue that is causing your no start. Have you checked fuel pressure? Have you checked HPOP pressure? That's where I would start. That FICM should be replaced soon, but like I said, it's not causing your no start issue.
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 111
Likes: 13
So instead of just scraping this trunk, I decided I'll put some money in it and see if she will get me by for another year.
Anyhow, I decided to pull the ipr to see if the screen is torn or plugged. All looks good. With the ipr valve still out, I cranked the engine to see if oil comes out. Nothing came out. Not even a drop.
so with that should I assume it's the hpop?
Anyhow, I decided to pull the ipr to see if the screen is torn or plugged. All looks good. With the ipr valve still out, I cranked the engine to see if oil comes out. Nothing came out. Not even a drop.
so with that should I assume it's the hpop?
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 111
Likes: 13
last week I pulled the ficm from a friend's running truck and put it in mine. Still wouldn't start.
Fleet Owner
Joined: Nov 2003
Posts: 27,900
Likes: 3,617
Sure would be nice to have a good code reader take a look at the PCM information!
Checked for air in the fuel?
Last time I loaned a FICM to a guy using a DVOM on it, it came back fried ................ With a scan tool - why do people still mess with the screws under the plate??!! You can short things out of you slip up just a bit.
Checked for air in the fuel?
Last time I loaned a FICM to a guy using a DVOM on it, it came back fried ................ With a scan tool - why do people still mess with the screws under the plate??!! You can short things out of you slip up just a bit.