Avalon 1995-1996

Exhaust Gas Recirculation System

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EGR Valve



Location

Specific to:

Toyota Avalon 1995-1996



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Fig. EGR valve (1) and vacuum modulator (2)

Operation

Specific to:

Toyota Avalon 1995-1996

The EGR system reduces oxides of nitrogen. This is accomplished by recirculating some of the exhaust gases through the EGR valve to the intake manifold, lowering peak combustion temperatures.

Removal & Installation

Specific to:

Toyota Avalon 1995-1996

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the air cleaner hose and lid. Disconnect the IAT sensor wiring.
  6.  
  7. Disconnect the accelerator cable bracket from the throttle body.
  8.  
  9. Remove the throttle body from the air intake chamber.
  10.  
  11. Unbolt and remove the engine hanger, air intake chamber stay and EGR vacuum modulator. Discard the vacuum modulator gasket.
  12.  
  13. Loosen the union nut of the EGR valve. Disconnect and label the hoses attached to the valve.
  14.  
  15. Disconnect the EGR gas temperature sensor wiring.

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    Fig. Prior to EGR valve removal, label all hoses for the EGR valve (1) and vacuum modulator (2)

  16.  
  17. Remove the nuts, EGR valve and pipe. Discard the gaskets.

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    Fig. Remove these three nuts to separate the EGR and modulator from the intake manifold



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    Fig. Pull the unit from the engine . . .



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    Fig. . . . and discard the old gasket

  18.  

To install:

  1. Place a new gasket on the cylinder head facing the protrusion downward. Install another gasket on the EGR valve and pipe and secure with the mounting nuts. Tighten them to 9 ft. lbs. (13 Nm).
  2.  
  3. Connect the EGR gas temperature sensor wiring.
  4.  
  5. Attach the vacuum hoses to the valve in their proper locations.
  6.  
  7. Tighten the union nut on the EGR valve to 43 ft. lbs. (59 Nm).
  8.  
  9. Install the air intake chamber stay, vacuum modulator and engine hanger. Place a new gasket into position facing the protrusion downward. Tighten the assembly down with the bolt and attach the hoses.
  10.  
  11. Install the throttle body with a new gasket. Attach all wiring and hoses removed.
  12.  
  13. Connect the accelerator cable bracket to the throttle body.
  14.  
  15. Install the air cleaner and hose. Attach the IAT sensor connection.
  16.  
  17. Attach the negative battery cable.
  18.  

Testing

Specific to:

Toyota Avalon 1995-1996



Click image to see an enlarged view

Fig. Related Diagnostic Trouble Codes

 
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