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

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Engine System Identification



Engine VIN Code ID [1] M

Engine Displacement 3.1L (191 cid)

Engine Configuration V6 - 3100

Fuel Control System Sequential Multi-Port Fuel Injection (SFI)

Ignition System [2] EI, IC, KS

Computer System Powertrain Control Module


[1] The eighth digit of the VIN denotes engine code.
[2] EI - Electronic Ignition System (Formerly called Distributorless Ignition System or DIS).
IC - Ignition Control. (Formerly called Electronic Spark Timing or EST).
KS - Knock Sensor. (Formerly called Electronic Spark Control or ESC).