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
Vacuum Modulator Valve
1.
Block drive
wheels, apply parking brake and place transmission in park.
2.
Start engine and run at slow idle.
3.
Connect vacuum gauge to hose leading to VMV port ``M.'' If reading is less than 14 inches Hg, check vacuum pump, VRV, solenoid and connecting hoses.
4.
Reconnect hose to VMV port ``M'' and connect gauge to VMV port ``D.''
5.
Gauge should read 13 inches Hg. If not, VMV is defective.