I was trying to set my idle air bleed adjustment screw, for which I need the air valve closed and adjust the screw to get 700rpm???

My 88 B230F (RHD!) is supposed to have a red/white wire coming out in a test point near the RIGHT tower to ground out and close the idle air valve- the only such wire is at the LEFT tower, and it's in a connector into the wiring form- breaking the connection does stop the motor-cannot restart without re-joining the connector. the air valve can be heard adjusting after connection broken.


There is a different 'free' connector on the outside rear of the Left tower, which does NOT have a red/white wire, just red, and a blue. A red/white wire is secured to the coil on the forward side, with the red wire-looks factory assembled? Can't see other spare wires/connectors with similar colours anywhere, and red/white not present in connector block at Left firewall. (?)

Anyone????

On my North American '86 with LH-2.2 ('85-'88), there is a test connector for idle speed and Lambda-sond. Two wires in a blue connector, a blue/white and a red. That test connector is near the ignition coil.

The procedure is to first warm up the engine, drive around for 20 minutes or so. Then ground the blue/white wire to close the idle air control valve. A/C turned off. Adjust engine speed using idle adjustment screw to 700 rpm. Disconnect ground wire from test point. Engine speed should increase to 750 rpm.

Thank you, I knew I should have re-read that. Those are the wires I was thinking of, but my memory is failing so I got cornfused. Now I know what the test connector looks like. Again, thanks.