North American Turbocoupe Organization

Code 11
stefan428 Offline
Junior Member
I have a 1990 Mustang that has a 1988 Thunderbird Turbo Coupe engine and transmission swapped into. I get codes 81,82,83 and 84 when running the key on engine off test. I do not get an initial Code 11. Is the LA3 supposed to produce a code 11 even when there are other codes stored?

Thank you.

Jeff K Offline
You will not get the system pass code 11 if other codes are stored. Of course, it is possible to get a system pass code 11 for the KOEO test, and fail the KOER test, or vise versa.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

stefan428 Offline
Junior Member
Thank you. Exactly what I needed to know.

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