Diagnostic Manual, Engines, Volume 1
Engine 102.985 CFI from 09/88 to 08/89
| Engine |
102.985 |
| CFI system designation |
3/3.5 |
On-off ratio/DTC readout (CFI)
On-off ratio readout with ignition: ON
Engine coolant temperature >80°C %
Engine coolant temperature <70°C %
|
70 (Federal)
85 (California)
- |
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
|
20
13 - 19
3 - 9
0±3
>15
readout oscillates
7 - 9
-60 (Bosch CFI control module)
-50 (VDO CFI control module) |
| Engine |
102.985 |
| CFI system designation |
3/3.5 |
Ignition timing and dwell
Closed throttle (idle) speed rpm
Ignition timing with vacuum BTDC
Engine speed rpm
Ignition timing with vacuum BTDC
Ignition timing without vacuum BTDC
Dwell  °
Dwell % |
700 - 800
8 - 12
3200
39 - 43
23 - 27
27 - 54
30 - 60
|
| Engine |
Model |
MB Part No. |
Ignition adjustment ° CA |
Resistance  /k |
| 102.985 |
201 |
000 540 24 81 |
0 |
750 |
| Note: If the reference resitor fails, then the igntion is retarded 3° at wide open throttle. |
| Engine |
102.985 |
| CFI system designation |
3/3.5 |
Closed throttle ( idle)
Selector lever position/Transmission range
Engine oil temperature °C approx.
Closed throttle (idle) speed rpm
Control range %
Control range °
On-off ratio readout during deceleration fuel shut off %
On-off ratio readout during deceleration fuel shut off %
|
P/N D
80 80
700 - 800 <750
43±7 <43
38±7 -
50 (Bosch CFI control module)
95 (VDO CFI control module) |
Vacuum mbar
Lambda control ontrol range % |
550 - 650
50±10 |
5) Disconnect oxygen sensor connector. Read control value (Volt). Readout must not oscillate. Reconnect oxygen sensor connector, readout oscillates.
Test value must not deviate more than ±0.8 Volt from the control value. |
| Engine |
102.985 |
| CFI system designation |
3 |
Engine performance 4)
Engine speed rpm
Output, manual transmission, 3rd gear hp
Output, 4-speed AT, transmission range 3 hp |
5000
96 
94 |
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) |
|
Printable version
