Join Date: Nov 2013
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EF Feedback, IDM, ICP,3-4 Shift Codes,OD Flashing
Hey guys somewhat new to diesels just bought my first one about a month ago. My overdrive on/off knob has been flashing all of a sudden since I took my chip out and sold it. the truck I've noticed runs rough at exactly 2,000RPM and has almost a knocking noise. I had it scanned today by Cottman Trans and they told me the following codes came up:
P1670 EF FEEDBACK
P1211 Injector Control Pressure
P0783 3-4th Gear Shift
The trans shifted very poorly prior to taking the TS chip out. Now it shifts very well however OD light flashes.
ALSO when i mash on it, 2500RPM or more that is when it really stumbles and falls on its face almost like an injector is stuck or something.
Any help is appreciated. Thanks guys
2001 F350 4x4 Auto 7.3 4in exhaust 6673 Intake 175K miles