Renault Coupes/Sedans/Wagons 1975-1985 Repair Guide

Ignition Timing Advance Control System



Click image to see an enlarged view

Fig. Fig. 1 Ignition timing advance control system schematic-(15) is the vacuum solenoid, (16) is the timing advance canister and (17) is the switch (Choke operated-LeCar; thermal switch-all other models)

A contact switch which works in conjunction with the choke cable (on LeCar models) closes and activates a solenoid which admits full vacuum to the distributor vacuum advance unit for improved emissions and driveability when the choke valve is closed. Some models use a coolant temperature sensing switch to activate the solenoid.