INJECTOR CONTROL MODULE - Ford Powerstroke Diesel Forum
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Old 04-26-2012, 10:09 AM
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INJECTOR CONTROL MODULE

Hello all.
I am reletively new to the forum.
I have an 2001 F250 7.3L diesel.
Last November I had the ICM replaced, supposedly due to one of the connectors in one of the valve covers.
This morning as I left my driveway, the check engine light came on and the truck started running real rough.
The diagnosis from a different dealer is the same. Low voltage running thru the ICM.
My question it this.
Is there a short, as in a bad connetor in the valve covers that will actually cause the ICM to go bad?
This really upsets me to the point of going and trading this in on a dare I say CHEVY.
This will be the second $1000.00 ICM in the last 6 months.

Thanks for the replys.
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Old 04-26-2012, 10:21 AM
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Most likely it's one of the harnesses under the valve cover. You can disconnect one valve cover at a time with the vehicle running to determine which side it is.
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Old 04-26-2012, 01:59 PM
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Hopefully

Well, I hope that is all it is.
Unfortunately it's at the dealership. I could not miss work.
Fortunately the ICM is still under warranty so hopefully it will be covered this time around.
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Old 04-28-2012, 11:29 AM
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Arrow ICM/no start

Go read my post under Quest for Knowledge on what I found on our 01 F350 7.3, your's sounds eerily similar.
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Old 04-28-2012, 02:42 PM
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Relays?

Quote:
Originally Posted by porkchop6209 View Post
Go read my post under Quest for Knowledge on what I found on our 01 F350 7.3, your's sounds eerily similar.
So, if I understand correctly its was the relays causing your problems?

Thanks
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Old 04-28-2012, 03:14 PM
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Relay 32

Specifically Relay 32, which is in the Battery Junction Box beside the Master Cylinder. Pull off the cover, the 3 big relays closest to the fender. The first one, closest to the firewall, is #30, it powers up the PCM and sensors, the 2nd one is the heater blower fan relay, the third one powers up the Fuel Injector Driver Module which puts fuel into the cylinders, no fuel/no fire. Swap the blower relay for the FIJM relay, see if it starts up and runs.
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Old 04-29-2012, 11:28 AM
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Go read my post A Word of Caution, hope it helps.
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Old 04-30-2012, 08:19 AM
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Thanks

It does help.
Especially about the batteries.
The last time this happened the wiring harness has shorted in the valve cover.
Since this truck is my daily driver, I don't have much choice but to let the dealer work on it. I know it will get expensive.
I suspected a "short" of some kind but after reading your posts, I am not too sure a relay is not the culprit.


Thanks again.

I really like this truck and don't want to part with it. However, if this continues, it just may get traded in on a new gas model.

My last two trucks were both F150's and the second one is still going strong for my brother.
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Old 04-30-2012, 08:34 AM
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idm is what you are reffering to , injector driver module , if its just running rough and check engine light my guess is the harness under the valve cover is just loose , very common issue and many idm have been changed due to that , get a second opinion on this truck
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Old 04-30-2012, 08:35 AM
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Quote:
Originally Posted by MotorCrafter3208 View Post
Most likely it's one of the harnesses under the valve cover. You can disconnect one valve cover at a time with the vehicle running to determine which side it is.
hes right , very uncommon for idm ,just harness probly
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