Compression Ignition Addict
Join Date: Dec 2007
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CEL (Check Engine Light) what turns it on?
A few weeks ago my CEL came on for the first time. I installed the SCT and checked for codes but none showed up so I returned to stock and CEL extinguished but returned on the next stert up. Now the same thing happens each time I retune or return to stock, the CEL remains extinguished until the net restart. I should add that the transmission shifting seems to be the only thing affected. Upon restart and CEL illumination the truck seems to shift like it has a tune installed. Stock the truck will shift up and down quickly and effortlessly whereas the non stock or tuned performance is more TC lockup where it shifts out and lugs around seemingly stuck in high gear forcing me to bury the pedal for kickdown. I'ts almost like the stock tune only remains until shut down then gets lost and needs to be reloaded.
-2003 F350 6.0 Fx4 Lariat w CLOUDRIDER grill
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-Toyo Open Country AT2 Xtremes 285/75/18
-SCT current tune: Quick Tricks 40hp tow w/ Jake Brake
-Banks turbo back exhaust
-CFM+ largemouth intake kit
-DJs Fuel Intensifier
-Dieselsite coolant filter
-BD Diesel CCV filter
-Autometer Cobalts in woodgrain pillars.
-Powerslot Cryo rotors & Hawk LTS pads
-KYB Monomax & Ride-rite airbags
Last edited by snoboy; 05-02-2009 at 12:14 PM.