Fuel injection system (KE-Jetronic) — additional adjustments and checks (Audi 80 B3)

Table of contents: Idle Speed Block (jN engine) ↓ Lambda control (jN engine) ↓ Lambda control (pS engine) ↓ Cold Acceleration Enrichment ↓ Enrichment of restart and warm-up ↓ Cold start valve and fuel injection… ↓ Auxiliary pneumatic valve ↓ Basic throttle valve installation ↓

Idle Speed Block (jN engine)

1. Be guided Chapter 24.

Lambda control (jN engine)

2. With the engine at normal operating temperature, connect the exhaust gas analyzer with the measuring pipe.

3. Start the engine and let it idle for at least two minutes.

4. Measure the CO content, then clamp hose 2, shown in Fig. 3.36. The CO content should increase briefly, then decrease. If not, disconnect the Lambda sensor wires and ground the green wire clamp for about twenty seconds. If the CO content now changes, the Lambda sensor is faulty.

4. Measure the CO content, then clamp hose 2, shown in Fig. 3.36. The CO content should increase…

Lambda control (pS engine)

5. Be guided Chapter 27, paragraphs 2-4.

Cold Acceleration Enrichment

6. Connect the multimeter to the differential pressure regulator.

7. Disconnect the wiring from the lower temperature sensor.

8. Remove the air intake elbow from the air flow meter.

9. Turn on the ignition. The current in the control circuit should be 80-100 mA.

10. Lift the air flow meter plate. The current in the control circuit should increase briefly by more than 100 mA.

Enrichment of restart and warm-up

11. Disconnect the high-tension wire from the ignition coil and ground it.

12. Connect the multimeter to the differential pressure regulator.

13. Disconnect the wiring from the lower temperature sensor.

14. Turn on the starter for about two seconds, then leave the ignition on. The current in the control circuit should rise to 120 mA within 30-60 seconds, then within 20-50 seconds should drop to 80-100 mA.