63. Disconnect the throttle body linkage, return springs, transmission control cable and, if equipped, cruise control.
64. Tag and then disconnect all vacuum hoses.
65. Using the holding auxiliary wrench, unscrew the nuts of the inlet and outlet pipes of the fuel line (see illustration). Remove and replace fuel line o-rings.
12.65. When loosening the nuts securing the fuel supply and drain lines, be sure to use an auxiliary holding wrench to prevent damage (twisting) highways
66. Remove the nuts securing the TBI block (see illustration), and remove the block from the intake manifold. Remove and replace the TBI block manifold gasket.
12.66. To disconnect the 220 throttle body from the intake manifold, remove the three nuts (indicated by arrows) (the third nut is not visible here)
67. Place the TBI block on the holder (Kent-Moore J-9789-118, VT-3553 or equivalent) Note. If you don't have a stand and want to place the TBI directly on the workbench (working bench), be extremely careful when servicing it - the choke can be easily damaged.
68. Remove the screws securing the fuel gauge body to the throttle body and remove the fuel gauge body from the throttle body.
69. Remove the gasket between the throttle body and the fuel gauge housing and replace it.
70. Remove the TPS block.
71. Turn the throttle body over on a level surface for more stability and remove the IAC valve.
72. Clean the throttle body in a cold cleaner. Thoroughly clean metal parts and dry with compressed air. Make sure all fuel and air passages and passages are free from dirt and burrs.
Attention! Do not immerse TPS, IAC valves, pressure regulator diaphragm, nozzles and other parts containing rubber in solvent or cleaning bath. If it is necessary to clean the throttle body, the time spent in the cleaning solution should be kept to a minimum. Some models have dust boots on the throttle, which can lose their effectiveness after being in a solvent.
73. Inspect the mating surfaces for damage that could compromise the gasket seal. Inspect the throttle lever and valve for dirt or damage.
74. Turn the throttle body over on a level surface for stability and install the IAC and TPS valve.
75. Install a new gasket between the throttle body and the fuel gauge housing and install the gauge on the throttle body. Apply sealant to the screws holding the fuel gauge housing to the throttle body and tighten them securely.
76. Install the TBI block and tighten the nuts to the torque specified in this chapter's specifications. Use a new gasket between the TBI block and the manifold.
77. Establish new sealing rings on nuts of fuel highways. Tighten the fuel inlet and outlet nuts by hand to avoid stripping the threads. Using an auxiliary wrench to prevent twisting of the lines, tighten the nuts securely after they are correctly seated in the TBI block.
78. Connect the vacuum hoses, throttle body linkage, return springs, transmission control cable and, if equipped, cruise control. Attach the grommet with wire harness to the throttle body.
79. Connect all electrical connectors, making sure they are fully seated and latched.
80. Check the stroke of the accelerator pedal.
81. Connect the wire to the battery and, turning off the engine and turning on the ignition, check for leaks on the nuts of the fuel supply and drain lines.
82. Adjust minimum idle speed and check TPS output (see paragraphs. 84-93).
83. Install the air filter, adapters and gaskets.