Brad's Car Manuals: A 3rd party mirror of CHARM + LEMON car manuals
Home >> BMW >> 1978 >> 633CSi Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION >> Testing >> THERMO Valve >> 320i

THERMO Valve: 320i

Download the full database via torrent (~1.1 TB)
  1. Disconnect thermo valve vacuum hose at EGR valve. Disconnect the other vacuum hose from thermo valve. Blow air into hose connected to thermo valve.
  2. Thermo valve should be closed with coolant temperature below 91°F (33°C) and fully open with temperature above 109°F (43°C). If not, thermo valve is defective.
scientia non olet · About Brad's Car Manuals