EGR Valve: Service and Repair

(figure 1) Linear EGR Legend:

Linear EGR Valve Central MFI:

REMOVAL
1. Disconnect the electrical connector.
2. Remove the valve to flange attaching bolts.
3. Remove the Linear Exhaust Gas Recirculation (LEGR) valve and gasket.
4. Discard gasket.

INSTALLATION
When installing LEGR valves, take care to orientate the valve properly before installation. It is possible to rotate the LEGR valve 18O °, and then install it on the intake manifold. LEGR valves improperly installed do not function as intended. Possible driveability concerns include a rough idle and the setting of codes DTC 32 (EGR Error) or DTC 1406 (Pintle Position Error).

LEGR valves improperly installed may respond to high vacuum conditions (at idle) by pulling the valve open, or high back pressure conditions by pushing the valve open.

When replacing or re-installing a LEGR valve, install the valve (with a new gasket) in the correct orientation. A new insulated gasket for use with this valve has been released for production and service.

1. Install LEGR valve with a new insulated gasket.
2. Install valve to flange attaching bolts and tighten bolts in two steps.
^ The first step, torque to 10 Nm (89 lb in).
^ The second step, torque to 25 Nm (18 lb ft).
3. Connect the electrical connector.