LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 1991 >> Jetta L4-1781cc 1.8L SOHC >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Application and ID >> Federal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Federal

ENGINE DESIGNATION [1]
100 HP RV
105 HP PF

CYLINDERS In-line 4 cyl.

DISPLACEMENT [2] 1.8L (1781cc)

FUEL SYSTEM [3] Digifant II

IGNITION SYSTEM [4] TCI-h With Knock Control

COMPUTER SYSTEM [5] Digifant II

[1] First two letters of engine number. Located on top of engine block where the head meets the block, between No.3 and No.4 cylinders.
[2] SOHC 8-valve
[3] Digifant II Engine Management System. (L-Jetronic).
[4] Transistorized Coil Ignition with Hall sender and Knock sensor. Digifant II Control Unit.
[5] The Digifant II Control Unit controls the fuel system as well as the ignition system and ignition knock system.