Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

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Thermal Vacuum Valve: Service and Repair

1. Drain engine coolant.
2. Disconnect vacuum hoses from EGR-TVS and remove switch.
3. Reverse procedure to install switch, noting the following.
- Apply a suitable sealer to the EGR-TVS threads.
- Torque switch to 20 ft lb.