Accord L4-1955cc 2.0L SOHC FI (1987)
Idle Speed: Component Tests and General Diagnostics
A/C Idle Control Test
A/C Idle Boost Test
1. Check the vacuum line for improper connection, cracks, blockage or disconnected hoses.
2. Start the engine and allow to idle.
3. Disconnect the vacuum hose between the A/C idle boost valve and the air chamber from the A/C idle boost valve and connect a vacuum gauge to
the valve.
There should be no vacuum.
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If there is vacuum, disconnect the # 19 vacuum hose from the A/C idle boost valve and connect the vacuum gauge to the hose.
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If there is no vacuum, replace the A/C idle boost valve and re-test.
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If there is vacuum, go to solenoid valve test II.
4. Turn the A/C switch and blower switch ON, then check that the compressor and the condenser cooling fan work.
There should be vacuum.
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If there is no vacuum, disconnect the # 19 vacuum hose from the A/C idle boost valve and connect the vacuum gauge to the hose.
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If there is vacuum, replace the A/C idle boost valve and re-test.
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If there is no vacuum, go to solenoid valve test I.
Solenoid Valve Test I:
1. Start the engine and allow to idle.
