XJ-S V12-5.3L (1982)
Engine Control Module: All Technical Service Bulletins
ECU - Vacuum Reservoir Retrofit
Number: J82/35
Date: September, 1982
Subject: Vacuum Reservoir Electronic Control Unit
Models: XJ-S HE
From VIN # 107102, a vacuum reservoir, Part No. CAC4968 situated next to the ECU has been introduced. This unit is to prevent the possibility of
resonance from the manifold depression sensor pipe.
In the event work is performed on an ECU in an earlier vehicle, this reservoir should be fitted at the same time.
