i have a 99 dodge 3\4, the speed -o-meter jumps im between 0-and 25 not over, and the abs-brake lights are on, every place i looked it says speed sensor, i have change speed sensor on the rear end, and the sensor in the back of the trans, i have unplugged the batteries for about 2 hr, checked all the fuses, and all the wireing under the dash, i dont have a abs reader to hook it up to so im kind shooting in the dark on this one,
any help would be appreciated

 

Is the connection on the plug to the sensor in the diff in good condition, or corroded and gross? I'd check that maybe...

 

Id check the complete harness (Yes i know big pain in the A$$) to make sure the wires are not rubbed threw maybe. Also maybe try some dielectric grease in the connections. Also where did you get your speed sensor from?

 

thanks for the replys guys, i got both sensors from oriellys auto parts, Borg Warner sensors, and now that i have time im going to cut all the zip ties and search every mm of the wires, i need it fixed this weekend had a 4 wheeler trip planed,
not sure if i mentiond this be for but it is not shifting right and tq is not locking up, ya think this could be a ECM

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checked all the sensors all ohm to spec, still jacked up going to make an opointment with dodge place Monday to have the ecm check:ar gh:

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well got it figured out guys i have it bombed up and i gess wiht the massive tq and my right foot at the track, i have broke the head off of three of the ring bolts and broke one off in the ring gear ring, the bolts screwed up the abs ring, 237000 miles time for a new one anyways