Century V6-173 2.8L VIN W FI (1987)
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Fuel Pump Relay: Service and Repair
REMOVE
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Negative battery terminal.
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Fuel pump relay.
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Electrical connector.
INSTALL
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Fuel pump relay.
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Electrical connector.
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Negative battery terminal.
IDLE LEARN PROCEDURE
Any time the battery is disconnected, the programmed position of the Idle Air Control (IAC) valve pintle is lost, and replaced with a "default"
value. To return the IAC valve pintle to the correct position, perform the following procedure:
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Restore battery power.
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Connect Tech I "Scan" tool.
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Select "IAC SYSTEM," then select "IDLE LEARN" in the "MISC TEST" mode.
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Proceed with idle learn as directed.
This procedure allows the Electronic Control Module (ECM) memory to be updated with the correct IAC valve pintle position, for the vehicle,
and provide a stable idle speed.