Sunday, June 3, 2012
1989 Volkswagen Golf I – system/component tests
Prior to the testing of individual components or systems, it is strongly recommended that all procedures listed in article F-BASIC tests are carried out. Since many computer controlled and monitored components changed voltage and resistance valves if they malfunction, it is also recommended that connector pin diagnostic check box.
Note: testing of individual components is not possible shorts or opens in the harness does isolate control of electronically controlled systems. Use an ohmmeter to isolate pants or opens in harness. All voltage tests should be made using a digital Volt Ohmmeter (DVOM) with a minimum 10-megaohm input impedance, unless specifically otherwise in testing procedures.
& Airflow Sensor sensors ENGINE SWITCHES (Cabriolet & Fox)
1) starter motor to pressurized fuel system. Disable and remove intake boot from top of engine air flow sensor. Disconnect secondary coil wire spool and jumper on ground.
2) play by slow-moving plate check box sensor through travel range with a magnet. Resistance must be felt. Move plate back to the rest position. There should be no resistance. If binding is felt, sensor plate hold down bolt loose and adjusting plate to center of venturi.
3) has been unsuccessful as resistance, air flow sensor from housing to clean and lubricate lever Assembly delete. As resistance is caused by control plunger, remove and clean control plunger Assembly. Remains as binding, replaced fuel distributor.
4) verify the position of air flow sensor plate. Air flow sensor plate border must be inside. 075.5? (1.9 mm) below the narrowest part of the venturi. See fig. 1. If this is not the case, bend sensor for years until the correct specification is obtained. Ensure that there is a small opening between the sensor lever and plunger control.
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