I left work last week and got on the freeway my dakota wouldn't shift into od for about 1 mile then it finally did. The rest of the ride home it was fine. I have let it set for a few days and now won't shift at all in to od. I noticed the temp gauge low so I replaced the t-stat engine is running at the correct temp but still no od. What can I check?

 

It might be your speed sensor or a fuse.

 

How do u test the speed sensor

 

the very first thing you should check before going deeper into anything is check the transmission fluid to see if its full, or check to see if the fluid is burnt. if it is brownish in color, or turning brown, its burnt. also try a transmission fluid and filter change.

as for testing the speed sensor, try getting up to cruising speed, and then stopping fast, dont lock up the brakes, just stop as fast as you can make it stop without skidding. note if it stalls or not. when you first put it in to drive a roll a couple feet forward or backward, the DRL's should kick in and turn on, note if they do or don't. is the transmission shifting fine other than not shifting into OD? just little testing factors like that are all I can think of, and is basically what I did when my speed sensor went.

 

Fluid is clean, trans shifts and works great other then the of not working . I will check the other tests tonight I'm also going to change the ect sensor. I didn't know the 92 had daytime running lights

 

One thing you can do before you start throwing parts on it, is find the OD pressure port just above the rear cooling line, when vehicle gets to around 50 MPH, pressure should be there..If there is any pressure ( whether low or not) , this would tell us all electronics are working.....Also your transmission harness near the same cooling line is 3 wire, the front wire is for OD ground.....If you tap into that wire with an LED light you can see if your computer grounds that circuit...


Brian

 

Replaced the ect still not shifting does it have to be led bulb?

 

And it did stall on the brake hard test

 

No it doest, its just that led uses so little energy that the circuit will not ground through it...But even a test light will work..

Brian

 

I will try that tomorrow night. So when I hook a light to it and get up to speed and my temp is right it should light the bulb if I hook one side to a power supply and the other side to the ground wire going to the od plug?