yes the passages can be cleaned. They pass exhaust gas into the intake maniflod for reburning.
It could be the DPFE that controls the EGR too. Diff. Pressure Feedback EGR.
there is also a vacuum regulator valve and a solenoid too.
Please rate as fixya if this helps.
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Exhaust Gas Recirculation (EGR) Valve —3.0L (2V)
Removal and Installation
- Disconnect the exhaust gas recirculation (EGR) valve (9D475).
- Disconnect the vacuum line.
- Disconnect EGR tube nut.
- Remove the EGR valve.
- Remove and discard the gasket.
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NOTE: The sealing surfaces are soft metal.
To install, reverse the removal procedure.
- Carefully clean both sealing surfaces and install a new EGR valve gasket.
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EGR Valve —3.0L (4V)
Removal and Installation
- Remove the EGR valve (9D475).
- Disconnect the vacuum line.
- Disconnect the EGR tube.
- Remove the EGR valve and discard the gaskets.
-
NOTE: The EGR valve sealing surfaces are soft metal.
To install, reverse the removal procedure.
- Carefully clean all sealing surfaces and install new EGR valve gaskets.
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