Idle COMPENSATOR
The idle compensator is a thermostatic valve which opens to allow air directly to the intake manifold. This compensates for the overly rich air/fuel ratio present during high idle temperature. Two idle compensators, having different opening temperatures, are used on 210 and 310 models. On Pickup and Stanza models, only one idle compensator is used.
On Pickup and Stanza models, idle compensator opens at 127°F (53°C). On Sentra, 210 and 310 models, first compensator opens at 140-158°F (60-70°C) and second compensator opens at 158-176°F (70-80°C).
NOTE:
On Pickup and Stanza models, idle compensator is mounted on carburetor, not in air cleaner housing as on Sentra, 210 and 310.