EGR Tube: Service and Repair
REMOVALUpper Tube
Fig. 5 EGR Tube:
The EGR tube attaches to the intake manifold plenum on both sides of the throttle body and the EGR valve.
1. Disconnect negative battery cable.
2. Remove air cleaner box.
3. Remove throttle cable shield.
Fig. 6 PCV Valve:
4. Remove EGR tube mounting screws at intake manifold plenum.
Fig. 7 Lower EGR Tube Bolts:
5. Remove EGR tube mounting screws at EGR valve.
6. Remove EGR upper tube.
7. When removing EGR upper tube assembly being careful not to drop the silicone rubber seals in the intake manifold. Clean gasket surfaces on the EGR valve. Note that any loose dirt can lodge between the pintle and the seat and cause valve leakage that will give a rough idle and depressed manifold vacuum.
Lower Tube
1. Disconnect negative battery cable.
2. Remove air cleaner box.
3. Remove the throttle cable shield.
4. Loosen the 4 bolts for the upper EGR tube at the intake manifold.
5. Remove the 2 bolts for the upper EGR tube to EGR valve.
6. Loosen the 2 bolts for the EGR valve to cylinder head.
7. Raise vehicle and support.
Fig. 8 Lower Tube To Exhaust Manifold:
8. Remove the 2 bolts and gasket for the lower EGR tube to exhaust manifold.
9. Lower vehicle.
10. Remove the 2 bolts for the EGR valve to cylinder head.
Fig. 9 Lower Tube And EGR Valve:
11. Remove assembly.
Fig. 10 Lower Tube To EGR Valve Bolts:
12. Remove the 2 bolts to the lower EGR tube to EGR valve.
INSTALLATION
Upper Tube
Fig. 11 EGR Tube:
The EGR tube attaches to the intake manifold plenum on both sides of the throttle body and the EGR valve.
1. Inspect rubber silicone seals on intake manifold end of EGR tube.
2. Install upper tube into the intake manifold, being careful that the silicone rubber seals are correctly installed and undamaged.
3. Install new gasket between the EGR valve and tube and install bolts.
4. Tighten the EGR upper tube to intake manifold plenum screws to 11 Nm (95 in. lbs.) torque.
5. Tighten the EGR upper tube to EGR valve bolts to 11 Nm (95 in. lbs.) torque.
6. Install the throttle cable shield.
7. Install air cleaner box.
8. Connect negative battery cable.
Lower Tube
Fig. 10 Lower Tube To EGR Valve Bolts:
1. Install the 2 bolts to the lower EGR tube to EGR valve. Tighten the inboard screw to torque and snug the outboard screw. Locate the tube in the approximate location needed for assembly. This will allow the movement of the tube into position when install on the vehicle. Tighten the EGR tube inboard screw to 11 Nm (95 in. lbs.) torque.
2. Install new gasket for the EGR valve to cylinder head and loosely install bolts.
3. Install assembly.
4. Loose install the 2 bolts for the EGR valve to cylinder head to cylinder head.
5. Loose install the 2 bolts and gasket for the upper EGR Tube to EGR valve.
6. Raise vehicle and support.
7. Rotate tube into position.
8. Install new gasket between the exhaust manifold and tube and loosely install bolts.
9. Tighten the EGR tube to exhaust manifold bolts to 31 Nm (275 in. lbs.) torque.
10. Lower vehicle.
11. Tighten the EGR valve to cylinder head bolts to 23 Nm (203 in. lbs.) torque.
12. Tighten the EGR tube outboard screw to 11 Nm (95 in. lbs.) torque.
13. Tighten the upper EGR tube screws to EGR valve to 11 Nm (95 in. lbs.) torque.
14. Tighten the upper EGR tube to intake manifold to 11 Nm (95 in. lbs.) torque.
15. Connect the electrical connector to the EGR valve.
16. Install air cleaner box.
17. Connect negative battery cable.