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
Hot Idle Compensator (Non Comp. Controlled): Description and Operation
This system is used on various models from 1978-82. Basic systems consist of a HIC valve, a check valve (in most cases), and an intake manifold tap. The HIC valve admits a controlled amount of air to the intake manifold to maintain proper
air/fuel mixture ratio at high temperature idle.