FUEL INJECTION DISASSEMBLY AND REASSSEMBLY
SERVICE MANUAL NUMBER 30
Idle Air Control (IAC) Valve
Removal
1.
2.
3.
4.
Remove the engine cover.
Remove hose from throttle body at the IAC.
Disconnect harness electrical lead.
Remove the 2 female hex bolts fastening the IAC valve at the rear of the engine.
c
a
b
77487
a - IAC Valve
b - Hose Connection
c - Female Hex Bolts (1 Hidden)
Cleaning and Inspection
IMPORTANT: Refer to carburetor cleaner manufacturers instructions for safety pre-
cautions.
1.
2.
Remove and discard sealing gasket from IAC valve. Clean sealing surfaces and air pas-
sage with a carburetor cleaner to remove carbon deposits.
Inspect the entire assembly for any obvious physical damage.
Installation
IMPORTANT: If installing a new IAC valve, be sure to replace it with an identical part.
IAC valve pintle shape and diameter are designed for the specific application.
1.
2.
3.
4.
5.
Install new gasket on IAC valve.
Install IAC valve in throttle body using screws. Torque to 20 lb-in. (2 Nm).
Connect hose from throttle body.
Connect harness electrical lead to the IAC.
Start engine and check for proper idle operation.
INDEX
Page 5B-10
90-863161 SEPTEMBER 2000
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 496 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(2 votes, average: 4 out of 4)
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