Cutlass Ciera Cruiser V6-3300 3.3L MFI VIN N (1993)
Replacement throttle body with transferred parts, following component repair procedures.
INSTALL OR CONNECT:
1.
Replacement throttle body to intake plenum.
NOTE: The minimum throttle valve position is critical to vehicle performance and component durability. If the throttle valve is adjusted too far
open, it will cause the IAC valve pintle to constantly bottom on its seat and result in early valve failure. If the throttle valve is not open far enough,
the vehicle may not start in cold weather or may stall during warm-up.
IMPORTANT: Adjustment should be performed only when installing a replacement throttle body. The idle stop screw is used to regulate the
minimum throttle valve position. On original equipment throttle bodies, it is adjusted at the factory, then covered with a plug to discourage
unnecessary readjustment.
2.
Adjust minimum throttle valve position.
ADJUST:
Adjust Tool required: Tech 1 "Scan" Tool
1.
Back throttle stop screw out until an air gap between the screw and the throttle lever can be seen by looking downward from above the throttle
body.
2.
Turn the stop screw in until it just contacts the throttle lever.
3.
Turn the stop screw in 1 1/2 turns further.
4.
Refer to "Idle Learn Procedure." The ECM will need to relearn the IAC valve pintle position following battery reconnect.
5.
Connect Tech 1 "Scan" tool to ALDL connector.
6.
Place transmission selector in "PARK."
7.
Start engine, allow it to reach normal operating temperature (about 90°C/194°F) and "Closed Loop."
8.
Observe Idle Air Control (IAC) valve counts displayed on Tech 1 "Scan" Tool.
IMPORTANT: Battery must have been disconnected during replacement procedure and then reconnected before checking IAC valve counts.
This will enable the ECM to relearn the IAC valve pintle position. IAC valve counts should be checked with all accessories "OFF" (A/C, rear
defog, etc.), transmission in "PARK," and engine cooling fan "OFF." Make sure throttle and cruise control cables DO NOT hold throttle open.
With engine stabilized, IAC valve position should be 10 to 20 counts. If not, repeat adjustment procedure.
