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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Engine Controls - Removal & Installation, Overhaul 4 Cylinder) >> Engine Sensors & Switches >> Knock Sensor >> Removal (ECHO)

Removal (ECHO)

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  1. Manufacturer states throttle body and intake manifold must be removed for access to knock sensor. Knock sensor is located on side of cylinder block. See Figure. Remove throttle body. See THROTTLE BODY  under FUEL SYSTEMS.
  2. Remove coolant filler and No. 2 cylinder head cover located on top of engine, above ignition coils and valve cover (if necessary) for access to intake manifold. See Figure. Disconnect necessary hoses for removal of intake manifold. Remove bolts/nuts, intake manifold and gasket from cylinder head.
  3. Disconnect electrical connector at knock sensor. Using Socket (SST 09816-30010), remove knock sensor from cylinder block.
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