Cutlass Ciera V6-3300 3.3L MFI VIN N (1993)
Throttle Body Identification
The throttle body assembly repair procedures cover component replacement with the unit on the vehicle. However, throttle body replacement requires
that the complete unit be removed from the engine. An eight digit part identification number is stamped on the bottom of the throttle body casting next to
the coolant cover. Refer to this number if servicing, or part replacement is required. For identification of parts during repair, refer to the disassembled
view.
Clean The throttle bore and valve deposits may be cleaned on-vehicle, using carburetor cleaner and a parts cleaning brush. Follow instructions on
container. DO NOT use a cleaner that contains methyl ethyl ketone, an extremely strong solvent, and not necessary for this type of deposit.
The throttle body metal parts may be clean following disassembly, in a cold immersion-type cleaner such as GM X-55 or equivalent.
NOTE: The TP and IAC valve should not come in contact with solvent or cleaner, as the may be damaged.
REMOVE OR DISCONNECT:
1.
Negative battery terminal.
2.
Partially drain radiator, to allow coolant hoses a throttle body to be removed.
3.
Air inlet duct.
4.
IAC valve and TP electrical connectors.
5.
Vacuum harness connector.
6.
Coolant hoses at throttle body.
7.
Throttle, TV (transmission control), and cruise control cables.
8.
Throttle body retaining bolts.
9.
Throttle body assembly.
10.
Flange gasket and discard.
NOTE: Use care in cleaning old gasket material from machined aluminum surfaces. Sharp tools may damage sealing surfaces. Clean gasket surface on
intake manifold.
INSTALL OR CONNECT:
1.
New flange gasket.
2.
Throttle body assembly.
3.
Throttle body retaining bolts. Tighten Throttle body attaching bolts to 25.0 Nm (18 ft lb).
4.
Throttle, TV (transmission control) and cruise control cables.
IMPORTANT: Make sure throttle and cruise control linkage does not hold throttle open.
5.
Coolant hoses to throttle body.
6.
Vacuum harness connector.
7.
IAC valve and TPS electrical connectors.
8.
Air inlet duct.
9.
Refill radiator to replace lost coolant.
10.
Negative battery terminal. With the engine "OFF," check to see that the accelerator pedal is free: Depress pedal to the floor and release.
11.
Perform the "Idle Learn Procedure." The ECM will need to relearn the IAC valve pintle position following battery reconnect.
REMOVE OR DISCONNECT:
Throttle body from intake plenum. Inspect Replacement throttle body for items to be transferred from old unit.
DISASSEMBLE:
Throttle body removed from engine, following component repair procedures.
ASSEMBLE:
