THERMACTOR Idle Vacuum (TIV) Valve
- With engine at idle and transmission in NEUTRAL, apply vacuum to small nipple and place fingers over the TIV valve atmospheric vent holes. See Fig 1 . If no vacuum is sensed, the TIV is damaged and must be replaced. If vacuum is sensed, go to next step.
- With engine still at idle, apply vacuum to TIV valve large nipple from using a vacuum pump. See TIV VALVE (LARGE NIPPLE) VACUUM SPECIFICATION table. If vacuum is not held, the TIV is damaged and must be replaced. If no vacuum is sensed, replace valve.
TIV VALVE (LARGE NIPPLE) VACUUM SPECS
| TIV Decal Color Code | Vacuum in. Hg. (kPa) |
|---|---|
| Ash | 5.1-10 (1.5-3.0) |
| Red | 11.8-15.2 (3.5-4.5) |