D30 High engine temperature with the fan operating
- Make
- Fiat
- Model
- Seicento Factory Service Manual
- Year
- 1998–2010
- Section
- Engine › D30 High engine temperature with the fan operating
DiagnosisD30 High engine temperature with the fan operating · page 1 of 2
D30 High engine temperature with the fan operating
The gauge on the instrument panel indicates excessive engine coolant temperature.
The fan cuts in correctly.
If not, see Diagnosis D31
NOTE: Preliminarily check:
– engine coolant level
– engine oil level
– correct tension of coolant pump belt (for 1108 versions: the coolant pump is controlled by the timing belt).
| Step | Validity | Operation to be performed | Test results | ||
|---|---|---|---|---|---|
| OK | ⚠ | 🔧 | |||
| 1 | CHECK TEMPERATURE GAUGE OPERATION | All OK | Problems found | Intervention | |
| Connect the diagnostic tool (Examiner or other tool) to the diagnostic socket. In engine management environment, read the engine temperature value indicated by the parameters and compare with the gauge reading. | Values agree: Go to Step 2 | Values disagree | Gauge fault See Diagnosis K25 |
||
| 2 | INSPECT COOLANT RESERVOIR | All OK | Problems found | Intervention | |
| Inspect the coolant expansion tank checking there are no air bubbles | Go to Step 3 | Air in the coolant circuit | Remove air from the coolant circuit If the fault persists, go to Step 3 |
||
| 3 | CHECK CYLINDER HEAD GASKET | All OK | Problems found | Intervention | |
| Check: – correct cylinder head torque – gasket tightness |
Go to Step 4 | Incorrect cylinder head torque | Restore correct torque PROCEDURE OP. 1016C40 or PROCEDURE OP. 1016D40 | ||
| Damaged gasket | Replace gasket PROCEDURE OP. 1016C10 or PROCEDURE OP. 1016D25 | ||||
| 4 | CHECK THERMOSTAT UNIT | All OK | Problems found | Intervention | |
| Check: – intactness of the thermostat unit – correct thermostat calibration |
Go to Step 5 | Thermostat unit fault | Replace the thermostat unit PROCEDURE 1088C30 | ||
(Cont..)
Parts & tools for this job For 1998 Fiat Seicento
- PARTEngine gasket setSearch: Fiat Seicento 1998 engine gasket set
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLFeeler gauge setSearch: feeler gauge set
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