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

Fuel Pump

FUEL PUMP

Current Draw 6 - 10 amps.

AIR/FUEL RATIO

On/Off Ratio [1] Readout Oscillating

[1] At Diagnostic socket, with on/off ratio tester, and 02 sensor connected. Reading should be within +10 of the value at 2500 RPM.