EGR Control Valve
WARNING: This page is about a different car, the 1994 Mazda Navajo and 1994 Mazda B4000. However, it is still accessible from the selected car via links, so may be relevant.
Bring engine to normal operating temperature and operate at idle. Disconnect and plug vacuum hose at EGR control valve. Engine should run smoothly. Connect vacuum pump to EGR control valve, and apply vacuum. See EGR CONTROL VALVE OPERATING VACUUM table. Engine should run rough or stall. If engine does not operate as specified, clean or replace EGR control valve.
EGR POSITION SENSOR VOLTAGE
| Terminal (ECU) | Volts | |
|---|---|---|
| "A" (2J) | ||
| Without Vacuum | About 0.7 | |
| With 5.9 In. Hg | About 4.7 | |
| "B" (3D) | Less Than 1.5 | |
| "C" (2I) | 4.5-5.5 | |