Newbie - need some help

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Mar 16, 2011 | 03:11 PM

rcCraig

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Newbie - need some help

I have an 05' 6.0 82k for mileage first owner and thought I took care of this truck. Last weekend I got my first CEL and got the low circuit for all 8 cylinder codes while pulling 5th. Normally driven as normal transportation with the occassion heavy loads 1500 lbs in bed or 7500# (5th). Been reading posts, thinking FICM but want to be sure, have not checked voltage going to on Friday (time contraints). No smoke, no power loss, no overheating, no hard starts, no rough idle... Am I covering all of my bases? I can perform basic mechanics but aside from checking the voltage on the FICM am not an electrician. Help!

Mar 16, 2011 | 04:09 PM

npccpartsman

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From: Stuttgart, Ar

Check the plugs, but I would say you have a pretty good idea with the FICM. Just because the voltage is minimum 45 doesn't mean it isn't toast though.

Mar 16, 2011 | 05:55 PM

rcCraig

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do you think glow plugs? I can start the truck within 5 seconds of turning the ignition, again, I do not know enough about the glow plugs so how do I check them?
Thanks,

Mar 16, 2011 | 06:10 PM

2006powerstroke90

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I would check the FICM first.

I do not think the glow plugs have anything to do with it.

Mar 16, 2011 | 06:31 PM

rcCraig

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thanks I will on Friday and let you guys know, it should drop below 45v if it is going out? From what I was reading, the problem is progressive due to heat and the resistors losing connectivity ultimately causing the signs to get worse? If I clear the codes and drive it what is the worst that could happen?