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!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Pressure, Vacuum and Temperature Specifications


EGR Thermo Valve [1]
Below 50°C (122°F) Open (EGR Disabled)
Above 80°C (176°F) Closed (EGR Enabled)

Engine Vacuum At Idle 20 in.Hg (67 kPa)

[1] Federal Only