1988 Toyota Camry emission controls

1988 TOYOTA CAMRY
277,717 MILES • 4 CYL • FWD • MANUAL
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JSANTIA
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  • 1 POST
I have what appears to be a thermal vacuum valve and was wondering what the difference is between it and a bi-metal vacuum swithching valve. My Motor is a 3S-FE engine
May 30, 2010 at 10:53 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Its the same thing once heated it transfers vacuum or shuts it off can be 2-3 ports on it

Bi-metal is made up of metals with different heat expansion rates, Temperature changes produce a bending or distortion of the element


TVSV is a temperature sensing device extending into the coolant that connects full vacuum to such areas like distributor vacuum advance
May 30, 2010 at 12:49 PM
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