Accord L4-1955cc 2.0L SOHC FI (1987)
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If there is voltage, inspect for a short in the Green/Black wire between the solenoid valve and the ECU. If the wire is OK, see ECU
troubleshooting.
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If there is no voltage, replace the solenoid valve and re-test.
Idle Speed Inspection/Adjustment
Idle Speed Inspection/Adjustment
1. Start the engine and warm it up to normal operating temperature (the cooling fan goes on twice).
2. Connect a tachometer.
3. Disconnect the upper vacuum hose of the idle control solenoid valve (between the valve and intake manifold) from the intake manifold.
4. Cap the end of the hose and intake manifold.
5. Adjust the idle speed with headlights, heater blower, rear window defroster, cooling fan and air conditioner off.
Idle Speed should be:
Manual 750 ± 50 rpm
Automatic 750 ± 50 rpm (in "N" or "P")
Adjust the idle speed, if necessary, by turning the adjusting screw on the top of the throttle body.
6. Check the idle speed with heater fan switch at HI (right end) and air conditioner on.
Idle Speed should be:
Manual 750 ± 50 rpm
Automatic 750 ± 50 rpm (in "N" or "P")
