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System Test

  1. Disconnect Red-striped vacuum hose between throttle body and purge control solenoid valve at throttle body. Connect a hand-held vacuum pump to disconnected vacuum hose. Plug nipple on throttle body where vacuum hose was removed.
  2. With engine at idle and engine coolant temperature at 104°F (40°C) or less on 3.0L or 140°F (60°C) or less on 1.5L, 1.6L and 2.0L, apply 7.3 in. Hg vacuum. Vacuum should hold. Raise engine speed to 3000 RPM, and again apply 7.3 in. Hg vacuum. Vacuum should hold.
  3. With engine at idle and coolant temperature at 176°F (80°C) or more on 3.0L or 158°F (70°C) or more on 1.5L, 1.6L and 2.0L, apply 7.3 in. Hg vacuum. vacuum should hold. Turn engine off. Start engine, and again apply vacuum, within 3 minutes of starting engine. Vacuum should bleed down.
  4. With engine running for more than 3 minutes after starting, raise engine speed to 3000 RPM and apply 7.3 in. Hg. Vacuum should hold momentarily and then bleed down.
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