Electronic EGR Controller
This unit responds to input signals from the speed sensor, throttle position switch and thermo switch. Electronic EGR controller will signal vacuum switching valve(s) to open according to input signals.
Electronic EGR controller will open vacuum switching valve when coolant temperature is over 131°F (55°C), engine is between 1200-2800 RPM and throttle position sensor voltage is less than or equal to .0007 X engine RPM + 2.52 volts.
Electronic EGR controller will also open vacuum switching valve when coolant temperature is over 131°F (55°C), engine is over 2800 RPM and throttle position sensor voltage is less than or equal to 4.48 volts.