4R70W fault code 639
Having a hard time trouble shooting this code.
The EEC seems to be fine, The 2 wires from EEC to OSS have good continuity,
OSS resistance is 515Ω trans book calls for 450 - 750Ω, neither pin on
sensor is shorted to ground, Also the trans seems to be stuck in limp mode
because of it I only have second gear lol.
EEC is a known to be good W4H0 out of a 95 mustang, This was all
working before the harness needed a rewire.
Hope someone can shed some light on this problem, And if anymore info
is needed ill be happy to share.