Looking for some help to solve a small problem with my 2001 Sequoia. I recently pressure washed my engine and the next day I notice that my speedometer was kind of jerky as it moved. It would hang for a split second and then jump up a couple of times until I reached cruising speed. This went on for a couple of weeks and then it started to just hang up around 45 – 50 mph and not go any further and I also noticed that it was hanging on the way down too. Now it is just hanging around 15 - 20 mph. I check the speed sensor connection at the tranny and everything looked dry inside the rubber boot. I am not sure where the wires go from there, but I would like to check any other connection points before I take it in for service to see if any water got somewhere is should not have. Anyone have a wiring diagram they would like to share?
If the speed sensor at the tranny is at fault, should that create other problems? I thought that the speed info is sent to the master control unit for other components to function correctly. If I pop in a new speed sensor is there anything I should be aware of before hand, or is it a simple remove and install operation?