Liberty, Wrangler, 1997-2005

Throttle Body

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Removal & Installation



2.4L & 3.7L Engines


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Fig. Throttle body mount bolts on the 2.4L engine



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Fig. Throttle body mount bolts on the 3.7L engine

A (factory adjusted) set screw is used to mechanically limit the position of the throttle body throttle plate. Never attempt to adjust the engine idle speed using this screw. All idle speed functions are controlled by the Powertrain Control Module (PCM).

  1. Remove air cleaner tube at throttle body.
  2.  
  3. Disconnect throttle body electrical connectors at IAC motor and TPS.
  4.  
  5. Remove all control cables from throttle body (lever) arm.
  6.  
  7. Disconnect necessary vacuum lines at throttle body.
  8.  
  9. Remove three throttle body mounting bolts .
  10.  
  11. Remove throttle body from intake manifold.
  12.  
  13. Check condition of old throttle body-to-intake manifold O-ring .
  14.  

To install:

  1. Check condition of throttle body-to-intake manifold O-ring. Replace as necessary.
  2.  
  3. Clean mating surfaces of throttle body and intake manifold.
  4.  
  5. Install throttle body-to-intake manifold O-ring.
  6.  
  7. Install throttle body to intake manifold.
  8.  
  9. Install 3 mounting bolts. Tighten bolts to 105 inch lbs. (12 Nm) torque.
  10.  
  11. Install control cables.
  12.  
  13. Install electrical connectors.
  14.  
  15. Install necessary vacuum lines.
  16.  
  17. Install air plenum.
  18.  

2.5L & 4.0L Engines

A (factory adjusted) set screw is used to mechanically limit the position of the throttle body throttle plate. Never attempt to adjust the engine idle speed using this screw. All idle speed functions are controlled by the Powertrain Control Module (PCM).

  1. Remove air cleaner tube at throttle body.
  2.  
  3. Disconnect throttle body electrical connectors at MAP sensor, IAC motor and TPS .
  4.  
  5. Remove all control cables from throttle body (lever) arm.
  6.  
  7. Remove four throttle body mounting bolts.
  8.  
  9. Remove throttle body from intake manifold.
  10.  
  11. Discard old throttle body-to-intake manifold gasket
  12.  

To install:

  1. Clean mating surfaces of throttle body and intake manifold.
  2.  
  3. Install new throttle body-to-intake manifold gasket.
  4.  
  5. Install throttle body to intake manifold.
  6.  
  7. Install four mounting bolts. Tighten bolts to 100 inch lbs. (11 Nm) torque.
  8.  
  9. Install control cables.
  10.  
  11. Install electrical connectors.
  12.  
  13. Install air cleaner at throttle body
  14.  

 
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