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Vacuum Modulator <--> [Shift Modulator]|Description and Operation|Page 9749 > < Shift Cable, A/T|Service and Repair|Page 9745

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

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Vacuum Modulator: Description and Operation

The vacuum modulator system controls shift feel (harshness) by sensing changes in engine load, which is indicated by engine vacuum. The modulator
does this by controlling main line pressure boost. The vacuum modulator system may be suspect for harsh or slipping shift conditions.

Vacuum Modulator <--> [Shift Modulator]|Description and Operation|Page 9749 > < Shift Cable, A/T|Service and Repair|Page 9745