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Throttle Body, Remove and Install (X 20 XEV, X 20
XER)
 Remove
Remove air cleaner housing – see illustration "Air Duct (X
20 XEV, X 20 XER)".
Reduce fuel pressure with Pressure Tester KM-J-34730-91 via
testing port – collect escaping fuel in suitable container
– observe safety regulations and national legislation.
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Detach fuel return line (1) from fuel pressure regulator and
detach Bowden cable bracket.
Disconnect wiring harness plug (2) from idle air control.
Lift retainer for accelerator Bowden cable (3) with screwdriver
and remove ball socket for accelerator Bowden cable (5) from ball
head.
For version with electronic cruise control: remove shackle for
cruise control Bowden cable from ball head – see operation
"Cruise Control – Bowden Cable, Remove and Install".
Detach Bowden cable retainers (4) from throttle body and lay
aside with Bowden cables towards rear.
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Detach vacuum hose of fuel pressure regulator (1) from throttle
body.
Detach coolant hose (2) and engine vent hose (3) from throttle
body.
Disconnect wiring harness plug from throttle valve
potentiometer.
Unscrew fastening nuts (arrows) for throttle body, remove
throttle body from intake manifold.
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Caution
Mask intake manifold opening – foreign bodies can cause
severe engine damage. Clean sealing surfaces and remove gasket
residue. Ensure utmost cleanliness – do not damage sealing
surfaces.
Install
Attach throttle body to intake manifold with new gasket –
tightening torque 9 Nm / 7 lbf. ft.
Connect wiring harness plug to throttle valve potentiometer.
Install engine vent hose, coolant hoses and vacuum hose for fuel
pressure regulator.
Attach Bowden cable bracket to throttle body.
For version with electronic cruise control: attach shackle for
cruise control Bowden cable to ball head – see operation
"Cruise Control – Bowden Cable, Remove and Install".
Connect ball socket for accelerator Bowden cable to ball head
– ensure that retainer engages.
Attach wiring harness plug to idle air control.
Attach fuel return line to fuel pressure regulator –
tightening torque 15 Nm / 11 lbf. ft.
Attach fuel return line to bracket for Bowden cables –
tightening torque 9 Nm / 6.5 lbf. ft.
Install air cleaner housing – see illustration "Air Duct
(X 20 XEV, X 20 XER)".
Inspect
Charge cooling system – see operations "Cooling System,
Charge and Bleed" and "Cooling System, Check for Leaks".
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