i have a 94 ram 1500 4x4 the speedo dosent work the check engine light comes on when it suppose to shift into overdrive but it dosent, and pretty sure the torque converter is not locking.

Asked by Feb 21, 2012 at 02:56 PM about the 1994 Dodge Ram 1500 2 Dr LT 4WD Standard Cab LB

Question type: Maintenance & Repair

i replaced the rear diff speed sensor tried two t case speed sensors idk..  ground wires?? is there another sensor im overlooking? i think its throwing code 37 but im not fully sure i really dont want to take it to a shop in fear the bill will be more than the truck is worth thanks.

2 Answers


look directly at the speedo issue, the TC lockup and OD will not work if the comp does not see a input from the speed sensor

2 of 2 people found this helpful.

check your fuses, i pulled, i believe the ABS fuse and it is connected to the speedo

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