Runs rough when cold. - Ford Powerstroke Diesel Forum
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Old 06-10-2012, 08:59 AM
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Runs rough when cold.

Ok so i am not looking forward to hear the answer to this but here goes. i have a 2006 6.0 and when i go to start it in the morning it turns over longer than it should before it starts. Then it takes a few mins before it runs worth a crap. about a mile and a half. After that it runs great with no issues. No white smoke and no other problems. Any ideas whats going on?????
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Old 06-10-2012, 09:18 AM
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I had the same issue with my 06 6.0....Check your ficm voltage and batteries...any dtc's?
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Old 06-10-2012, 09:24 AM
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Well how do you check the ficm voltage. And what is dtcs
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Old 06-10-2012, 09:38 AM
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There is a way to check your ficm voltage with a volt meter. You can do a search on this forum how to check it using a volt meter. I use a scan tool that plugs into my obdII port.

DTC are diagnostic trouble codes that may or may not turn on your check engine light which can also be checked using a scan tool. I used the auto enginuity tool and/or a torque app for my smart phone.

My ficm voltage at KOEO (key on engine off) was at 38 volts and truck ran rough, bucked and had no power for about 3 minutes...also blew a little white smoke. Your ficm voltage should never be less than47 volts.

I sent my ficm to ficmrepair.com and were very helpful. Sent it to them and had it back all within 5 days
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Old 06-13-2012, 06:09 PM
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ok so i just checked my ficm voltage and i was hoping that was the problem but it was at 48.5 with key on engine off and while running. What now??
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Old 06-13-2012, 06:13 PM
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also it runs bad when engine is cold not cause temp outside is cold. its summer. just clearing that up
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Old 06-13-2012, 06:32 PM
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did you check your FICM when the truck was cold (i.e. had not run for several hours)?

MikeB
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Old 06-13-2012, 06:34 PM
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its been sitting for 4 days when i checked it
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Old 06-13-2012, 06:36 PM
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Quote:
Originally Posted by mpage18 View Post
ok so i just checked my ficm voltage and i was hoping that was the problem but it was at 48.5 with key on engine off and while running. What now??
just showing 48 volts does not mean your ficm is ok.

Sent from my SCH-I500
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Old 06-13-2012, 06:37 PM
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alright then? so what now! should i just take it to get checked out or is there something else i can test.
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