Grand Vitara
NOTE:
This model uses thermo wax to control a plunger and lever outside throttle body.
- Check throttle valve lever moves freely. Measure plunger protrusion of fast idle control arm with coolant temperature at 75-78 °F (23-26°C). See Fig 1 . Plunger measurement should be 1.048-1078" (26.6-27.4 mm).
- Start engine, check that higher than normal idle speed exist. As engine coolant temperature raise, fast idle speed should gradually reduce. As engine coolant temperatures reach 126-154°F (52-68°C), check to make sure fast control cam is off cam follower lever. See Fig 2 . If conditions are not as specified in steps 1 and 2, valve could be faulty or coolant passage could be blocked. If no problem exist with coolant passage, replace throttle body assembly.