Ignition - Revised Coil Resistance
89geo02Number: 89-128-6D
Section: 6D
Date: APRIL, 1989
Subject: IGNITION COIL RESISTANCE
Model and Year: 1988 "R" CAR
TO: ALL CHEVROLET DEALERS
This bulletin cancels and replaces Bulletin 89-86-6D dated February, 1989, to correct the resistance specification shown for the secondary coil resistance (the "K" was omitted). All copies of 89-06-6D should be discarded.
This service bulletin updates the ignition coil resistance specification found on page 6D-28 in both the 1988 Spectrum Service Manual and the 1989 GEO Spectrum service manual under the heading "IGNITION COIL (INCORPORATED DISTRIBUTOR)". The correct resistance specifications for the primary and secondary coils are:
Primary Coil Resistance 1.1 ohms to 1.8 ohms
Secondary Coil Resistance 11.2 K ohms to 20.5 K ohms