Isx 870 engine coolant/oil temp gauge/Jake brake

[Rawze]

(10-16-2023 )Crossfire Wrote:  Thanks for the thoughts. I forgot to mention that I do have the wiring schematics from Kenworth and I have been using Quickserve. Oddly enough, the issues were present before any programming was done.

Some vehicles share the power feed (+5 volts) of the coolant or other sensors with the tranny tail-shaft speed sensor. Seen a few times where the tail-shaft speed sensor or wiring would screw with the coolant or other engine sensors, causing the engine sensors to fault or act up, and not the speed sensor.

just a thought.