Join Date: Mar 2011
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'1990 7.3L Turbo diesel E4OD flashing OD light
I have a 90 E350 with a 7.3 turbo diesel and an E4OD. I believe it has 167,000 miles, came from the state with records and appears to have had regular maintenance. No maintenance listed on transmission other then fluid level checks. The OD light flashes almost as soon as you start driving. The switch is mounted on the dash not on the end of the shifter. Transmission shifts smooth through all 4 gears so its NOT in limp mode. Fluid is full and not burnt. You can turn OD off and on and see the change in RPM. Having problems pulling a code, either no code or failure to read. So looking to see if anyone has ran into this issue.
Last edited by sarhuey212; 12-05-2018 at 04:32 PM.