ABCDEFGHIJKLMNOPQRSTUVWXYZ
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MixtureBase voltage14
Duty cycle - Idle can be +/- 10%, at 2500rpm has to be idle+10%
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Duty cycleReading VIgnition onWarmup
Idle target warm
2500rpm warm
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Rich10%12.670%30%->50%50%40%
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15%11.9
When lamda warms up (20-30s), duty is 50%, if after that duty stays 50% then lambda doesen't work!
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20%11.2
Pin 2 ground, Pin 5 base voltage, Pin 3 measuring pin
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25%10.5
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30%9.8
Wait 10sec after adjustment.
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35%9.1
10
40%8.4
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45%7.7M103 KAT
12
50%7
Two differences:
13
55%6.3
14
60%5.6
Find and plug vac pipe from purge valve (on n/s wing) before taking readings.
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65%4.9
16
70%4.2
Measure duty cycle at 2,500 rpm and record. Idle duty cycle to be + or – the value at 2,500 rpm.
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75%3.5
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80%2.8
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85%2.1
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Lean90%1.4
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Actual VActual %
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6.553.57
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