CRX L4-1488cc 1.5L SOHC (D15A3) MFI (1987)
Throttle Opener: Testing and Inspection
Idle Speed Inspect/Adjust
Idle Speed Inspection/Adjustment
1. Start the engine and warm up to normal operating temperature (cooling fan comes on).
2. Connect a tachometer.
3. Disconnect the #1O vacuum hose from the intake manifold.
4. Cap the end of the hose and intake manifold.
5. Check the idle speed with headlights, heater blower, rear window defogger, cooling fan and air conditioner off.
Idle speed should be: 750+50 rpm
Adjust the idle speed, if necessary, by turning the adjusting screw on the top of the throttle body.
If idle speed cannot be adjusted by turning the idle adjusting screw, check the fast idle valve.
6. Check the idle speed with the A/C on.
Idle speed should be: 750+50 rpm
Adjust the idle speed, if necessary, by turning adjusting screw B.