No speedo after vss sensor change on 1993 Ford F-250

I had a speed sensor code and after changing vss on rear diff things got worse Now I have abs light on, no speedo and code Went back to old sensor still abs light but speedo can back but erratic still code Cleaned connector back to new sensor still have issue Wire looks ok but have traced all the way back All was fine before the repair except thep code Jon

by in Chapel Hill, NC on May 03, 2013
2 answers 2 comments
ANSWER by on May 03, 2013
What was the problem to begin with, before you started working on it?
COMMENT by on May 03, 2013
I had a code set for failed Speed Sensor and neutral position sensor and poor performance power and fuel mileage. Occasional hard shifts and excess clutch slippage I replaced neutral position sensor and that code went away. At same time as speed sensor change on rear diff. I since both the old and new speed sensor are giving erratic signals I am leaning toward with a bad plug or wiring. Since it got worse after touching the plug to remove it I am assuming it is close to that end and not up toward the front. Make sense?
COMMENT by on May 03, 2013
ANSWER by on June 04, 2015
check for spead termanal on hardshell conector

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