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Old 02-18-2011, 04:27 PM
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check engine light-steady

I have a 2006 PSD with 52,800 miles and is totally stock. Today I was pulling the Grapevine Pass in So Cal with my 12000K 5er in tow. I had about a 45 mph headwind and the check engine light came on. I was boosting about 27-28 psi and at about 3200 rpm trying to maintain a 50mph speed. I noticed nothing wrong with the truck other than the light coming on and staying on. Any ideas what, if anything, is wrong?

Thanks in advance,
Dave
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Old 02-18-2011, 05:11 PM
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getting it scanned is the only advice we can give you, in al honesty, there are hundres of things it could be setting the light off, especially with the later ford ecm flashes
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Old 02-18-2011, 06:22 PM
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Quote:
Originally Posted by topcop45 View Post
I have a 2006 PSD with 52,800 miles and is totally stock. Today I was pulling the Grapevine Pass in So Cal with my 12000K 5er in tow. I had about a 45 mph headwind and the check engine light came on. I was boosting about 27-28 psi and at about 3200 rpm trying to maintain a 50mph speed. I noticed nothing wrong with the truck other than the light coming on and staying on. Any ideas what, if anything, is wrong?

Thanks in advance,
Dave
Just a little advice get some gauges if you are pulling if you what to keep that motor together something like the Edge Insight so you can watch the EOT-ECT-EGT-TT, temps are a big killer and also fuel pressure. I pull a 14k 5er and can see temp on the EGT close to 1350* and ECT 218* and EOT 228* pulling a 7% grade over 6 miles long and 90*+ outside then i start to back off also try and keep the boost around 25lbs, 28lbs is max on a stock 6.0 and fuel pressure under 45lbs will kill injectors.
2 stroker
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Old 02-19-2011, 09:31 AM
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Thanks for the replies so far, but I need more input. Any ideas?

Dave
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Old 02-19-2011, 09:38 AM
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Until you can verify what CEL code it actually is, guys are shooting in the dark.
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Old 02-19-2011, 09:59 AM
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Im betting you got a EOT and ECT over 20 delta. In the newer 6.0 at 20 degree difference this will light up.

Means your on the verge of breaking something.

Take the truck to any local Autozone, Checkers, Pep Boys, and they can scan it. They can at least tell you the P code and then if they cant tell you what it is punch it into Google and it will tell you.

From the sounds of it though with the time it came on in the environment you were in i bet the truck OCT got way above the ECT.

I haven't pulled anything with my truck since i got my programmer and gauges installed but i routinely see 8 degrees difference and peaks of 12 to 13 and that was threw all the big mountain passes here at 70 to 75mph.
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Old 02-19-2011, 11:27 AM
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Just had it scanned and they advised that "no codes found". What do I do now?

Dave
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Old 02-19-2011, 11:43 AM
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If it is running normal then don't sweat it for now but get those gauges so you can see what's going on
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Old 02-19-2011, 11:52 AM
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So when they scanned, did the light stay on? Or did is it off now?


To others who posted. Doesn't the "Wrench" light come on in the 06's for the ECT vs. EOT instead of "check engine"? I have an 04, so I don't have the wrench light.
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Old 02-19-2011, 12:26 PM
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If the light is still on and if your still under warranty which you might be depending on when you purchased the truck I would take it to the dealer and have them scan it and diagnose it to see what is wrong. The check engine light doesnt come on for no reason. There has to be something wrong. I agree with the idea that it might be related to the 20* delta difference because it could hit that under that load but under any regular driving it might not be blown yet but right on the edge.
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