Compression Ignition Addict
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2004 6.0 no longer will take tunes?
Alright guys I have a situation for you that I can't seem to figure out. Might be a long read but I'd appreciate any help you have for me.
A little back ground first. I bought an SCT 3015 June 15, 2012 for my truck and decided to run the canned tunes until I studded the truck. 223k running stock bolts, egr delete, coolant filter, coolant flush, new oil cooler, blue spring, updated turbo feed line etc. Mostly simple thigns to make it more reliable. I ran the canned performance tune for around 6 months with no problem. About a month ago I was driving the truck to my parents house going up a small 4% grade hill on the highway and all hell broke loose. I lost power, ficm voltages dropped to 20, i was blowing tons of white and black smoke and my EOT was reading -40. I was only a few miles from my uncles shop so I limped it over there thinking my FICM had gone bad seeing as it was reading anywhere from 20 to 48 I thought that was the problem. Also, when i went to turn th truck on the buzz cycle was almost a minute long. At this point I figured what the hell and we took it apart and and studded it since I had collected most of the parts anyhow and it would take a week or so for the FICM to get back from FICMrepair.com
2 weeks go by, we get the truck back together, install the newly fixed FICM and turn the key try and start the truck. Once again we notice the 1 minute buzz cycle and the ficm voltages are 34 and the EOT reads -40. I'm thinking WTF!?!?! the ficm is still bad. But for grins we grab the SCT tuner, load the stock tune and instantly the ficm reads 48, the EOT reads 62 and the buzz cycle was normal. Start the truck up after some long cranks and it runs fine.
I contact SCT and they send me a few test files with the same results, Long buzz cycle, 30-40 ficm voltage and -40 EOT. They have told me I have a bad FICM, but it runs fine on the stock tune. Is it possible that the SCT tunes F'ed up my computer?
I'm at a loss here. Can anyone chime in? Has this happened to anyone?
Thanks in advance guys. I'm very ancy to load a tune and see how the hybrid and 175/stocks do on my truck.
(build thread on truck once this issue is resolved!)
2004 CCLB 6.0 6 speed 4x4
ARP Studs with OEM Gaskets
Barder Stage 3 / Holders 205/100s
Southbend Dual Disk Clutch
Odawg fully ported and deleted intake manifold
4" MBRP Turbo Back
Windrunner regulated Return with custom Y-pipes
Cat EC-1 with coolant filter
Flyin Diesel Sump w/ fuel lab 4201
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Last edited by william_ace; 01-16-2013 at 06:24 PM.