A new style idle control valve part number 13 41 1 435 846 should be installed. Whistling Noise from Idle Control Valve Model: BMW E36 with M44 engine Complaint: The idle control valve can emit a whistling noise when the engine is at idle. This is due to adverse tolerances between the idle control valve housing and the rotary slide valve. Remedy:
Throttle Actuator Control Module Internal Circuit Conditions. Cause: Engine running, Idle Learn procedure not active, TAC duty cycle range switch indicating more than 80%, then the PCM detected a short to ground or an open circuit in the throttle valve motor circuit, or detected a fault in the TAC module internal circuit. Oct 26, 2019 · Many years ago the writer bought a Commer van with a stuck engine. The poor aftermarket ignition wiring (the van originally had a diesel engine) had caused the engine to quit. The vehicle had been idle for over a year judging by its tax disc so Plus Gas was introduced into the plug holes daily for over a week.