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2.2L Turbo Engine

NOTE: The EGR valve stem is not visible on 2.2L turbo EGR valves.
  1. Disconnect the vacuum hose from the EGR valve and connect a vacuum gauge to it. Start engine and raise engine speed to 2000 RPM. With engine temperature below 90°F (32°C), vacuum reading should be zero. If the vacuum gauge reads zero, proceed to next step. If gauge reads an unsteady reading above zero, replace EGR solenoid.
  2. Disconnect vacuum line to EGR backpressure transducer from EGR solenoid. Connect a vacuum gauge to this line. With engine at normal operating temperature, raise engine speed to 2000 RPM. Gauge should read at least 5 in. Hg vacuum. If vacuum reading is correct, proceed to step 4).
  3. If gauge does not read at least 5 in. Hg vacuum, repair vacuum supply hose from throttle body and solenoid. Disconnect vacuum gauge from hose and reconnect hose to backpressure transducer.
  4. Disconnect vacuum hose to EGR valve vacuum motor from EGR backpressure transducer. Connect a vacuum gauge to this hose. Start engine and raise engine speed to 2000 RPM. Gauge should read about 5 in. Hg vacuum. If reading is okay, proceed to step 5). If vacuum reading is not about 5 in. Hg vacuum, replace EGR valve/backpressure transducer assembly.
  5. Connect a vacuum pump to EGR valve vacuum motor. With engine running at idle, slowly apply vacuum to EGR. Engine speed should drop when applied vacuum reaches 2-3.5 in. Hg vacuum. If engine speed does not drop, replace EGR valve/backpressure transducer assembly and EGR tube. Before replacing assembly, check for plugged EGR supply tube or passages.
  6. If engine speed dropped in step 5), apply 10 in. Hg vacuum to EGR valve. Vacuum should hold for at least 10 seconds without bleeding down. If vacuum holds, system is okay. If vacuum does not hold, replace EGR valve/backpressure transducer assembly.
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