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Engine speed may drop quickly or engine may even If both the EGR Gas Flow Check, System Check and Diagnosis Chart are completed satisfactorily, If engine speed does not drop off when performing the test, remove both the EGR valve and EGR tube EGR VALVE SERVICE—2.2L AND 2.5L TBI REMOVAL (1) Disconnect electrical connector and vacuum line from the electric EGR transducer (Fig. 12). (2) Remove EGR valve bolts from intake manifold. Check for any signs of leakage or cracked surfaces. INSTALLATION (1) Assemble EGR valve with new gasket onto the intake manifold. (2) Install EGR valve mounting bolts. Tighten to 22 N Im (200 in. lbs.) torque. (3) Reconnect vacuum line and electrical connector to Electric EGR Transducer. EGR TUBE SERVICE—2.2L AND 2.5L TBI ENGINES REMOVAL (1) Remove EGR tube attaching bolts from intake and exhaust manifolds. (2) Remove EGR tube. faces and EGR tube flange gasket surfaces. Discard (4) Check for signs of leakage or cracked surfaces on either manifolds or tube. Replace as necessary. INSTALLATION (1) Loosely position EGR tube and new gaskets in place on intake and exhaust manifolds. Install (2) Tighten attaching bolts to 22 N Im (200 in. lbs.) torque. EGR VALVE SERVICE—3.0L ENGINES REMOVAL (1) Disconnect the electric and vacuum connectors from the electric EGR transducer (EET) (Fig. 16). (2) Remove EGR valve mounting bolts. kets. Check for any signs of leakage or cracked sur- INSTALLATION (1) Install EGR valve and new gasket on intake manifold. Tighten mounting bolts to 22 N Im (200 in. lbs.) torque. (2) Connect the electrical and vacuum connectors to the electric EGR transducer. EGR TUBE SERVICE—3.0L ENGINES REMOVAL (1) Remove EGR tube flange nuts from exhaust manifold (Fig. 16). (2) Remove EGR valve nuts at intake manifold (Fig. 16). Remove EGR tube. (3) Clean all gasket surfaces and discard old gas- kets. Check for any signs of leakage or cracked sur- INSTALLATION (1) Loosely install the EGR tube on the intake and exhaust manifolds with new gaskets. (2) Tighten EGR tube flange bolts at the intake manifold to 22 N Im (200 in. lbs.) torque. (3) Tighten EGR tube to exhaust manifold nuts to 22 N Im (200 in. lbs.) torque. EGR VALVE SERVICE—3.3L AND 3.8L ENGINES REMOVAL (1) Disconnect vacuum tube from electric EGR transducer (EET). Inspect vacuum tube for damage (2) Remove electrical connector from EET. EGR transducer. (5) Remove EGR valve from intake manifold. Check for any signs of leakage or cracked surfaces. INSTALLATION (1) Assemble EGR valve with new gasket onto the intake manifold. (2) Install mounting bolts. Tighten bolts to 22 N Im (200 in. lbs.) torque. (3) Install electric EGR transducer in clip with ori- entation tab in slot and snap closed. (4) Reconnect vacuum hose and electrical connec- tor to EET. EGR TUBE SERVICE—3.3L AND 3.8L ENGINES REMOVAL (1) Remove EGR tube attaching bolts from intake and exhaust manifolds. (2) Clean intake and exhaust manifold gasket sur- faces. Discard old gasket. 25 - 22 EMISSION CONTROL SYSTEMS Ä |