Another cold start thread...
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Senior User
Joined: Aug 2012
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From: Cleveland, Ohio
Another cold start thread...
Hey guys, leaving work tonight and it sbout 20 deg F out and go to fire the truck up (sitting about 8 hours outside) and she starts a little rough, but fires up. I let it run for a bit and it kicks into high idle and all seems to be fine. Drive 20 minutes home and everything seems to be gravy.
However, after I started driving it throws the CEL. Seeing as there were no immediately discernible problems as I was driving, no smoke, no weird throttle issues etc. what do you guys think this could be? Just bought the truck a week and a half ago with 84xxx miles, 06 6.0...took her on a trip to Michigan (~180 miles) which was just as cold and again in the morning when leaving my buddys house she wasn't happy but after a bit, smoothed out and no problems.
Anyways, what do you guys think this code could be before I actually pull it?
Thanks,
Sam
However, after I started driving it throws the CEL. Seeing as there were no immediately discernible problems as I was driving, no smoke, no weird throttle issues etc. what do you guys think this could be? Just bought the truck a week and a half ago with 84xxx miles, 06 6.0...took her on a trip to Michigan (~180 miles) which was just as cold and again in the morning when leaving my buddys house she wasn't happy but after a bit, smoothed out and no problems.
Anyways, what do you guys think this code could be before I actually pull it?
Thanks,
Sam
Logistics Pro
Joined: Dec 2004
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From: South Weber, Utah
You need to get yourself some kind of gauges like scan gauge II, edge insight CTS or one of the smart phone apps like dash boss ( apple ) or torque (android) that is capable of reading live data and reading codes as they are an absolute necessity in diagnosing these trucks. The check engine light could be any number of things.
Since your new to the 6.0 allow me to make a few suggestions. The key in longevity with the 6.0 is proper maintenance. Always use OEM/Racor oil and fuel filters and OEM air filters, make sure you have the OEM oil filter housing cap and change them at proper intervals. Also the 6.0 does not like 15W40 oil in very cold climates and a good CJ-4 rated 10W30 or 5W40 will keep the ole girl happy in cold weather.
Keep your electrical system healthy, always replace batteries in pairs
Since your new to the 6.0 allow me to make a few suggestions. The key in longevity with the 6.0 is proper maintenance. Always use OEM/Racor oil and fuel filters and OEM air filters, make sure you have the OEM oil filter housing cap and change them at proper intervals. Also the 6.0 does not like 15W40 oil in very cold climates and a good CJ-4 rated 10W30 or 5W40 will keep the ole girl happy in cold weather.
Keep your electrical system healthy, always replace batteries in pairs
Fleet Owner
Joined: Nov 2003
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Nice post Mustang -
clevelandtundra - While you are deciding where to get the codes read, there is a thread in the Tech Folder on checking FICM voltages. It is easier wth a scangaugeII, etc. (highly recommended as mentioned), but can be done with a DVOM.
clevelandtundra - While you are deciding where to get the codes read, there is a thread in the Tech Folder on checking FICM voltages. It is easier wth a scangaugeII, etc. (highly recommended as mentioned), but can be done with a DVOM.
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From: Cleveland, Ohio
Thanks bismic & mustang. I'll check out Advance Auto Parts and see if I can pick up a ScanGuage to see what the code is. Hope its nothing serious.
It was 8 degrees Farhenheit out this morning and it did the same thing, started slowly but smoothed out after a couple minutes. CEL still on.
Will update.
It was 8 degrees Farhenheit out this morning and it did the same thing, started slowly but smoothed out after a couple minutes. CEL still on.
Will update.
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As you said, it starts slowly, is a concern.
Even with 15w40 and cold temps the engine still should crank over fairly well. After it starts it might run like butt, but it will run.
The CEL could be for your FICM, but until you receive the DashBoss kit you'll need to do some manual checking.
You'll need a good idea of the condition of your batteries, either by load testing or a hydrometer.
2nd the alternator output. With a stock 6G alternator 13.6 volts, hot engine at the batteries would be considered good.
3rd would be to pull the inspection cover on the FICM and take some voltage checks at KOEO, cranking and then running. Should be 45+ volts at all times
Even with 15w40 and cold temps the engine still should crank over fairly well. After it starts it might run like butt, but it will run.
The CEL could be for your FICM, but until you receive the DashBoss kit you'll need to do some manual checking.
You'll need a good idea of the condition of your batteries, either by load testing or a hydrometer.
2nd the alternator output. With a stock 6G alternator 13.6 volts, hot engine at the batteries would be considered good.
3rd would be to pull the inspection cover on the FICM and take some voltage checks at KOEO, cranking and then running. Should be 45+ volts at all times
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