EGR Thermovalve (Federal)
Disconnect vacuum hoses from thermovalve and connect a hand-held vacuum pump to thermovalve nipple. Vacuum should not hold at 122°F (50°C) and should hold at 176°F (80°C).
Disconnect vacuum hoses from thermovalve and connect a hand-held vacuum pump to thermovalve nipple. Vacuum should not hold at 122°F (50°C) and should hold at 176°F (80°C).