Aerio & Grand Vitara
NOTE:
These models use thermo wax capsules 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 77°F (25°C). See Fig 1 . Plunger measurement should be 1.048-1.078 in. (26.62-27.38 mm).
- Start engine, check that higher than normal idle speed exists. As engine coolant temperature increases, 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 fast idle valve does not operate as specified, valve could be faulty or coolant passage could be blocked. If no problem is found with coolant passage, replace throttle body assembly.