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Engine 116.965 CFI

Engine 116.965/Federal 116.965/California
CFI system designation 3.1 3.1
On-off ratio/DTC readout (CFI)
On-off ratio readout with ignition: ON %

70

85
Current at EHA
Ignition: ON mA
After start enrichment and warmup
After start enrichment at +20 °C engine coolant temperature mA
Warmup base value at+20°C engine coolant temperature mA
Engine coolant temperature +80°C mA
Enrichment during acceleration and at
+20°C engine coolant temperature mA
Engine at operating temperature
Part load mixture correction mA
Wide open throttle enrichment at 2000 rpm mA
Deceleration fuel shut off approx. mA
Deceleration fuel shut off approx. mA

75

5 - 9; 1100 rpm/40 sec.
0
readout oscillates

>20

readout oscillates
4 - 6
-60 (Bosch control module)
-50 (VDO control module)

75

5 - 9; 1100 rpm/40 sec.
0
readout oscillates

>20

readout oscillates
4 - 6
-60 (Bosch control module)
-50 (VDO control module)

Engine 116.965
CFI system designation 3.1
Ignition timing and dwell
Engine speed rpm
Ignition timing with vacuum BTDC
Ignition timing without vacuum BTDC

Engine speed rpm
Ignition timing with vacuum BTDC
Ignition timing without vacuum BTDC
Dwell °
Dwell %

600 - 700
10 - 14
3 - 7

3500
41 - 45
28 - 32
27 - 40
60 - 89

Engine Model MB Part No. Ignition adjustment ° CA Resistance /k
116.965 126 000 540 24 81 -6 750
Note: If the reference resitor fails, then the igntion is retarded 3° at wide open throttle.

Engine 116.965
CFI system designation 3.1
Closed throttle ( idle)
Selector lever position/Transmission range
Engine oil temperature °C approx.


Closed throttle (idle) speed rpm


Control range mA

On-off ratio readout during deceleration fuel shut off %

P/N D
80 80

+100
650 <650
-50

700 - 1000 <700

95
Vacuum mbar
Lambda control ontrol range %
550 - 650
2)
2) Check on-off ratio at 2500 rpm and read mean value with the purge line disconnected and plugged.
Compare this value with the closed throttle speed value. The mean value at closed throttle speed must be higher by 5 but not more than 15.
From 1988 the mean value at closed throttle speed must not deviate from the value at 2500 rpm by more than ±10.

Engine 116.965
CFI system designation 3.1
Engine performance 4)

Engine speed rpm
Output, 4-speed AT, transmission range 3 hp


5200
162
4) These are minimum performance values. Do not exceed speed of 80 mph.
Check performance only at simulated engine coolant temperature of 80 oC (use 2 resistance substitution units)