I have 2001 TJ that i have swapped a 5.3 ls motor into. I am running the GM ECU and the factory jeep ECU in order to keep my factory gauges. I am using the module from novak for the tach.
All of the gauges are working except the engine coolant temp, and oil pressure. the coolant temp stays at 0, and when I turn the key to the "ON" position with the engine off the oil pressure reads 40.
I have checked that there is voltage at the sensor, and that both have grounds. My scanner will read engine coolant temp through the jeep ECU but it will not read oil pressure. I dont understand why the scanner will read the coolant temp but the gauges wont?
Any help would be appreciated.