I have 1990 plymouth sundance 2.5l tbi engine code k need help locating sensors

Temperature sensor: Facing the engine from the front of the car, behind the valve cover area, bottom of the throttle body right side. Throttle position sensor: on the throttle body opposite the accelerator cable. I would only caution you that those codes do not mean the sensors have failed. Have a really good look at the wiring and connectors and ensure there is no damage or issue there. Proper testing would be to get the wiring for continuity / resistance and for proper power and ground prior to condemning the related parts.