Vacuum Modulator
WARNING: This page is about a different car, the 1996 Suzuki Sidekick, 1996 Geo Tracker, 1995 Suzuki Sidekick, and 1995 Geo Tracker. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
A faulty vacuum modulator can cause:
- Harsh upshift and downshifts.
- Delayed upshifts.
- Soft upshifts and downshifts.
- Slips in "L", "D" and "R".
- Transmission overheating.
- Burnt transmission fluid.
- Remove modulator. Hold modulator so vacuum fitting points downward. Replace modulator if full of transmission fluid.
- Connect vacuum pump. Apply 20 In. Hg of vacuum. Ensure modulator operates and holds vacuum. Replace if necessary.