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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Bimetal vacuum switching valve

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Old Mar 19, 2026 | 07:03 PM
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BrattyBrat's Avatar
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Bimetal vacuum switching valve

I have a 1990 3.0 4 wheel drive. What is the purpose for the bvsv valve and can I delete it? It’s made of plastic this is the second time Ive had to replace it.

Last edited by BrattyBrat; Mar 19, 2026 at 07:06 PM. Reason: Forgot some other stuff
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Old Mar 19, 2026 | 07:11 PM
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From: Denver CO
It’s an old thread but may help you.

https://www.yotatech.com/forums/f116...-valve-105223/
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Old May 7, 2026 | 08:56 AM
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Bvsv

How did you remove and replace the broken BVSV?
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