Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Control Module HVAC: Adjustments

Fig. 15 Idling Stabilizer Amplifier.:





1. Start engine and operate A/C system. Measure compressor clutch cut-off and cut-in engine RPM. Cut-off RPM should be 700-800 RPM.
2. Turn variable resistor shaft, Fig. 15, counterclockwise if cut-off RPM is too high and clockwise if cut-off RPM is too low.