Thermactor Idle Vacuum (TIV) Valve
- With engine at idle and transmission in Neutral, apply vacuum to small nipple and place fingers over TIV valve atmospheric vent holes. See Fig 1 . If vacuum is not sensed, TIV is damaged and must be replaced. If vacuum is sensed, go to next step.
- With engine still at idle, use a vacuum pump to apply vacuum to TIV valve large nipple. See TIV VALVE (LARGE NIPPLE) VACUUM SPECIFICATIONS . If vacuum is not held, TIV is damaged and must be replaced.
TIV VALVE (LARGE NIPPLE) VACUUM SPECIFICATIONS
| TIV Decal Color Code | In. Hg |
|---|---|
| Ash | 5.1-10.0 |
| Red | 11.8-15.2 |