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Hello y'all. Not sure if there is a better location for this question or not. But here goes.
So, I have a problem I have been chasing down. Any speed above 40 MPH my needle bounces from 2mph to as far at 10 MPH over. (Using GPS to figure this out) it does not seem to be effected by smooth road or bumpy road. It does seem to get a little better when pressing the accelerator. Also it seems to be better when it is cold out.
Now, what I have done so far is rule out the rear differential sensor.(disconnected it and it still had the problem and the ABS light came on) The worm gear in my transfer case (it looked good still) the sensor that connects to the T-case worm gear. (reads within specs on my multy-meter) I've replaced the cluster that has the needle attached to it, but not the one with the odometer, I took the two half's apart and replaced just the needle motor section. I've cleaned and used Dielectric grease on the contacts to the cluster, sensors and the wireing harness conector under the car near the driver seat. Also tested continuity from T-case sensor conector to wiring harness connection, it seemed fine.
I doubt it's the printed circuit board holding the clusters behind the dash, I had to replace that once for intermittent speedometer readings, going from any speed down to 0 abruptly. It was a crack in the printed circuit.
My main question is this, is there a computer brain that uses the t-case sensor for input and makes an output for the speedo? If so, where is it and do you think that may be the problem?
In have a 1997, 4.0 OHV, 4 door, 4X4 manual with the rear diff off of a 93 I think. It was like that when I bought it. It's nearly all stock or OEM parts.
Sent from my SM-G900V using Tapatalk
So, I have a problem I have been chasing down. Any speed above 40 MPH my needle bounces from 2mph to as far at 10 MPH over. (Using GPS to figure this out) it does not seem to be effected by smooth road or bumpy road. It does seem to get a little better when pressing the accelerator. Also it seems to be better when it is cold out.
Now, what I have done so far is rule out the rear differential sensor.(disconnected it and it still had the problem and the ABS light came on) The worm gear in my transfer case (it looked good still) the sensor that connects to the T-case worm gear. (reads within specs on my multy-meter) I've replaced the cluster that has the needle attached to it, but not the one with the odometer, I took the two half's apart and replaced just the needle motor section. I've cleaned and used Dielectric grease on the contacts to the cluster, sensors and the wireing harness conector under the car near the driver seat. Also tested continuity from T-case sensor conector to wiring harness connection, it seemed fine.
I doubt it's the printed circuit board holding the clusters behind the dash, I had to replace that once for intermittent speedometer readings, going from any speed down to 0 abruptly. It was a crack in the printed circuit.
My main question is this, is there a computer brain that uses the t-case sensor for input and makes an output for the speedo? If so, where is it and do you think that may be the problem?
In have a 1997, 4.0 OHV, 4 door, 4X4 manual with the rear diff off of a 93 I think. It was like that when I bought it. It's nearly all stock or OEM parts.
Sent from my SM-G900V using Tapatalk
