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Bi-Metallic Vacuum Switching Valve (BVSV) - Fuel Injected Corolla, Land Cruiser, MR2 & Van

  1. Drain coolant and remove BVSV valve. Place sensing portion in cool water, but do not allow water into valve.
  2. Cool BVSV to below 86°F (30°C) on Land Cruiser, 95°F (35°C) on Corolla and MR2, and below 104°F (40°C) on Van. Blow air into top port and check that air does not escape through bottom port.
  3. Heat BVSV to above 111°F (44°C) on Land Cruiser and above 129°F (54°C) on all others. Blow air into top port and check that air escapes through bottom port.
  4. Apply liquid sealer to threads of BVSV and reinstall. Fill radiator with coolant. If problem is found, replace BVSV.
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