Engine Identification

ENGINE VIN CODE [1]
FEDERAL EMISSIONS EQUIPPED J
CALIFORNIA EMISSIONS EQUIPPED K

ENGINE DESIGNATION CODE [2] AAH

ENGINE CONFIGURATION [3] 90° V6

DISPLACEMENT 2.8L (2771cc/169ci)

COMPUTER SYSTEM [4] MPI MMS vers. 100/200

FUEL SYSTEM [5] Sequential Multi-Point Fuel Injection

IGNITION SYSTEM [6] Mapped Electronic Ignition

[1] 5th digit of Vehicle Identification Number (VIN). VIN plate mounted atop drivers side instrument panel, visible through windshield lower left corner.
[2] Engine code stamped on right side of engine block between the cylinder head and hydraulic pump.
[3] SOHC 12-valve (2 valves per cyl.), 172 HP.
[4] MPI MMS versions 100 and 200 with OBD. System uses single control unit for both fuel and ignition control. Both versions use a CO% potentiometer on the Mass Air Flow Meter. MMS 100 uses ECM # 4a0 906 266A and MMS 200 uses ECM # 4A0 906 266AA, # 4A0 906 266AB, or # 8A0 906 266A.
[5] Fuel System uses 4-hole single-spray solenoid-type injectors, dual oxygen sensor feedback, start and idle speed control, after start and acceleration enrichment, deceleration fuel shut-off.
[6] Transistorized Distributorless Ignition System, Coils controlled by Power Stages, Hall sender and cylinder selective Knock Control.