Bad PCM????? - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 03-16-2012, 05:35 PM Thread Starter
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Bad PCM?????

First off let me give a little history. About 2 months ago I blew HG's and got it studded, at that time I had the injectors flow tested and they said that they where not flowing enough on the high side and that they were almost gone. About a month ago I got Eric to tweak my Extreme Street tune. I uploaded the new tune and that is when this problem started. First I noticed that it had considerably less power. I uploaded the original Extreme street and still the same thing, a lot less power. I figured that my injectors had finally got bad enough for me to feel it. I got me a set of 155's from Jesse Warren and installed them. Got all of my tunes updated for them. Fuel psi was low after that, ordered an Airdog 2. Got it put on today, 62 psi fuel now at idle and WOT. Still no change in the lack of power. I return the truck back to stock and drove it down the road about 6 miles, it ran as good as they do on stock tuning. Got home killed it and now it will not start. I have 0.6v ICP while cranking, 62 fuel PSI, no codes. Also ever since this started I cannot get my EGT's over 1200 and that used to be really easy to do. Also I am draining batteries like crazy now, they were only 4 months old. I let my truck sit for 2 weeks while at work, come home they are dead as hell. I go get 2 more under warranty, 2 days later I let is sit for 3 days while waiting on Airdog to get here and again dead as hell. Sometimes when I turn the key on the WTS light will come on and the glow plugs will not, and the truck is plenty warm. Sometimes when I turn the key on the fuel pump will not come on. Sorry for being so long just trying to be thorough. Any and all help is greatly appreciated.

2012 F250 Lariat CCSB FX4, Gooseneck and 5th wheel prep package, H&S Minimaxx, 5" AFE SS straight pipe, EGR delete with factory EGT sensor, 35" Toyo MT's on stock rims, and Bilstein 5160 shocks.
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post #2 of 6 Old 03-16-2012, 05:39 PM
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What are your ficm volts? Sounds like a bad ficm or glow plug controller to me... Was it hot when you tried to re-start or was it cold?


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post #3 of 6 Old 03-16-2012, 05:42 PM Thread Starter
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FICM is a constant 48v. Yes is was hot when I tried to restart it.

2012 F250 Lariat CCSB FX4, Gooseneck and 5th wheel prep package, H&S Minimaxx, 5" AFE SS straight pipe, EGR delete with factory EGT sensor, 35" Toyo MT's on stock rims, and Bilstein 5160 shocks.
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post #4 of 6 Old 03-16-2012, 06:01 PM
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Well if it was hot then it's not the glow plugs and it's not the ficm voltage... Possible it's still a bad ficm though... Are there any codes?


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post #5 of 6 Old 03-16-2012, 06:09 PM Thread Starter
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Nope no codes what so ever.

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2012 F250 Lariat CCSB FX4, Gooseneck and 5th wheel prep package, H&S Minimaxx, 5" AFE SS straight pipe, EGR delete with factory EGT sensor, 35" Toyo MT's on stock rims, and Bilstein 5160 shocks.
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post #6 of 6 Old 03-17-2012, 07:44 AM Thread Starter
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Update - last night I walked out to the truck and my Insight was turning on and off, repeatedly. I had the key in my pocket. Walk out there this morning, truck starts instantly and runs fine. Still missing that lost power though.

2012 F250 Lariat CCSB FX4, Gooseneck and 5th wheel prep package, H&S Minimaxx, 5" AFE SS straight pipe, EGR delete with factory EGT sensor, 35" Toyo MT's on stock rims, and Bilstein 5160 shocks.
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