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

Engine Block Heater: Testing and Inspection

If engine block heater fails to operate, perform the following inspections:
^ Check power supply.
^ Check electrical cord connections at the power supply and at the engine block heater.
^ Check electrical cord for proper routing, opens or shorts.

If all the above check good, replace the engine block heater.