Ficm or something else
Thread Starter
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4wd Low
Joined: Oct 2023
Posts: 14
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Ficm or something else
Hello
read lots of information on here first time posting
I have a 03 f250 6.0 manual (love it when it runs) in the last 2500miles it has had 8 new injectors new hpop new Ipr icp new glow plugs glow plug relay glow plug harness injector harnesses recently it started getting hard to start cold ficm voltage low per snap on scan tool ( replaced both batteries and alternator)
I found another ficm from another truck put it in drove truck approximately 120 miles it died the edge chip says injector control psi low the snap on says icp is only 243.2 psi at cranking
should I change icp or look more to ficm
ficm is not vin program
read lots of information on here first time posting
I have a 03 f250 6.0 manual (love it when it runs) in the last 2500miles it has had 8 new injectors new hpop new Ipr icp new glow plugs glow plug relay glow plug harness injector harnesses recently it started getting hard to start cold ficm voltage low per snap on scan tool ( replaced both batteries and alternator)
I found another ficm from another truck put it in drove truck approximately 120 miles it died the edge chip says injector control psi low the snap on says icp is only 243.2 psi at cranking
should I change icp or look more to ficm
ficm is not vin program
Cargo Master
Joined: Nov 2015
Posts: 3,422
Likes: 938
From: Fort Worth, TX
The ICP has to reach a minimum of 500 psi before the truck will start, and the FICM has nothing to do with that. With all the work that's been done recently, it could simply be a clogged-up screen on the IPR. That's where I would look first.
Thread Starter
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4wd Low
Joined: Oct 2023
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What or how would it be clogged? It’s not the easiest to get to ( behind the turbo) I have another one on the shelf but it’s a car quest made I was told those aren’t very reliable but the motorcraft one doesn’t seem to be either
only reason I thought ficm was because of the ficm change.
only reason I thought ficm was because of the ficm change.
Cargo Master
Joined: Nov 2015
Posts: 3,422
Likes: 938
From: Fort Worth, TX
The IPR is not that hard to get to. Drain two gallons of coolant from the radiator petcock into empty coolant jugs, pull the air filter assembly, degas bottle, and FICM. I could get this whole job done in 2 hours. If you have an air compressor and an IPR adapter, this would also be a good time to air test the high pressure oil system for leaks, so you don't have to tear it all back down again if the IPR screen is clean. You will also need a special socket to remove the IPR if you don't already have one.
Changing parts of the high pressure oil system can dislodge debris, clogging the screen.
You may have a FICM problem too, but those low ICP numbers should be a bigger priority, IMO.
Changing parts of the high pressure oil system can dislodge debris, clogging the screen.
You may have a FICM problem too, but those low ICP numbers should be a bigger priority, IMO.
Thread Starter
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4wd Low
Joined: Oct 2023
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I’ve changed them before
what I was saying is the fuel system (Ipr icp injectors hpop harnesses etc) approximately 2500 miles was all done at the same time except for ficm original ficm was changed 10/28 drive approximately 150 miles died at intersection first code was low icp pressure snap on scanner is giving low psi but after code was cleared it hasn’t come back won’t start either
what I was saying is the fuel system (Ipr icp injectors hpop harnesses etc) approximately 2500 miles was all done at the same time except for ficm original ficm was changed 10/28 drive approximately 150 miles died at intersection first code was low icp pressure snap on scanner is giving low psi but after code was cleared it hasn’t come back won’t start either
Cargo Master
Joined: Nov 2015
Posts: 3,422
Likes: 938
From: Fort Worth, TX
Then you should know it isn't that much work. If two hours is too much work for you, then you should probably get a half ton gasser.
What you're calling the "fuel system" is what we call the high pressure oil system. It doesn't matter how long ago it was replaced. You could still have a leak somewhere in the system. Not only will the truck not start if ICP is below 500 psi, it also won't continue to run if drops below that. Given the first code was low ICP pressure, what is it you don't understand about what I've been trying to tell you??? Or are you just looking to justify the expense of a new or rebuilt FICM?
what I was saying is the fuel system (Ipr icp injectors hpop harnesses etc) approximately 2500 miles was all done at the same time except for ficm original ficm was changed 10/28 drive approximately 150 miles died at intersection first code was low icp pressure snap on scanner is giving low psi but after code was cleared it hasn’t come back won’t start either
Fleet Owner
Joined: Nov 2003
Posts: 27,900
Likes: 3,617
A FICM problem is not going to cause low ICP pressure - at least not to the point that it is too low to start.
Also, where the parts were purchased may be an issue here. Post up where you bought them.
To rule out a bad ICP sensor, simply try starting it with the ICP sensor unplugged. Also, we like to see the ICP sensor volts as part of the assessment of ICP sensor health (KOEO and cranking).
Also, where the parts were purchased may be an issue here. Post up where you bought them.
To rule out a bad ICP sensor, simply try starting it with the ICP sensor unplugged. Also, we like to see the ICP sensor volts as part of the assessment of ICP sensor health (KOEO and cranking).
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4wd Low
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Everything except for icp was from Aliant diesel icp was a motorcraft independent shop did all the work
fuzzpuss wasn’t trying to upset you just saying it’s a pain in the can to do
icp is all clean no debris unless it’s microscopic
just relaying had no problems until ficm was changed
fuzzpuss wasn’t trying to upset you just saying it’s a pain in the can to do
icp is all clean no debris unless it’s microscopic
just relaying had no problems until ficm was changed
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Fleet Owner
Joined: Nov 2003
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I don't think anyone ever proved that the Alliant Power parts were exactly OEM (it was discussed a lot). I do know that for years Alliant Power injectors were advertised as OEM, but actually were not. It was not until Pure Power Technologies and Alliant Power entered into a Business Contract venture that their injectors were officially OEM (Pure Power was the joint venture between Siemens and Navistar and they were the ONLY OEM manufacturer and remanufacturer - even when Alliant was selling injectors advertised as OEM).
Only point is that it seems way harder than it should be to determine what is actually OEM and what isn't. I have no idea why it is so hard.
Anyway, I have no intent to say that Alliant Power parts are not good. I just question the claim of OEM. It seems that they usually advertise as "OEM quality", or "built to OEM specifications".
Only point is that it seems way harder than it should be to determine what is actually OEM and what isn't. I have no idea why it is so hard.
Anyway, I have no intent to say that Alliant Power parts are not good. I just question the claim of OEM. It seems that they usually advertise as "OEM quality", or "built to OEM specifications".
Fleet Owner
Joined: Nov 2003
Posts: 27,900
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And thank you for doing so. Those of us that still spend time on these forums usually like to keep up with the parts supply end and how the quality is being maintained as time goes by. Unfortunately it seems that we are at the time in the 6.0L life cycle where parts quality is not that important to Ford or other suppliers.
Anyway - you seem to still be focused on the FICM and I will still say - the FICM will not cause a low "cranking" ICP value. You will get over 500 psig when cranking (on a healthy system) even with the FICM unplugged.
Anyway - you seem to still be focused on the FICM and I will still say - the FICM will not cause a low "cranking" ICP value. You will get over 500 psig when cranking (on a healthy system) even with the FICM unplugged.
Cargo Master
Joined: Nov 2015
Posts: 3,422
Likes: 938
From: Fort Worth, TX
Everything except for icp was from Aliant diesel icp was a motorcraft independent shop did all the work
fuzzpuss wasn’t trying to upset you just saying it’s a pain in the can to do
icp is all clean no debris unless it’s microscopic
just relaying had no problems until ficm was changed
fuzzpuss wasn’t trying to upset you just saying it’s a pain in the can to do
icp is all clean no debris unless it’s microscopic
just relaying had no problems until ficm was changed
2. ICP doesn't have a screen. IPR is what I told u to pull and check.
3. Your first post said you changed the FICM after getting cold hard starts.
Are you being willfully ignorant or is your reading comprehension really that poor?
Thread Starter
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4wd Low
Joined: Oct 2023
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Changed icp truck is running and warming up
I’m not necessarily focused on ficm but it seems coincidental is all and are these icp really that low quality I have 3 now in 3000 miles that have gone bad granted 2 happened at same time of hpop and injectors going bad
But neither tested good
I’m not necessarily focused on ficm but it seems coincidental is all and are these icp really that low quality I have 3 now in 3000 miles that have gone bad granted 2 happened at same time of hpop and injectors going bad
But neither tested good
Fleet Owner
Joined: Nov 2003
Posts: 27,900
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I have found that the ICP sensors from a dealership have been quite reliable (now this was not the case with the '03 ICP sensors in the early days, but that got remedied over the first 4-5 years).
EDIT - also a tip to remember: If you have a bad ICP sensor (ie one that is causing a no-start), simply disconnecting it will return proper starting function (assuming no other problems exist).
EDIT - also a tip to remember: If you have a bad ICP sensor (ie one that is causing a no-start), simply disconnecting it will return proper starting function (assuming no other problems exist).
Thread Starter
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4wd Low
Joined: Oct 2023
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No I’m not being as willfully ignorant as you are being willfully a jerk first off second off screens clean port is clean and different icp has been put in truck ran until I touched throttle pedal died low icp psi 137.2 at crank with 178 water temp 5.6 psi actual voltage is .19 to .21 key on engine off