Engine rumbling
- Make
- Fiat
- Model
- Multipla Factory Service Manual
- Year
- 1998–2010
- Section
- Noisy / vibrations › Engine rumbling
Fault diagnosisEngine rumbling
ENGINE RUMBLING
There is a constant, low frequency noise, only noticeable for short periods of time
| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Carry out a preliminary test to check the conditions which give rise to the noise | The noise does not reoccur: Continue to Step 3 | The noise increases considerably with the steering in the end of travel position | See table S35 | |
| The noise also occurs with the engine switched off (when warm) | Continue to Step 1 | |||
| The noise increases during braking | Continue to Step 2 | |||
| 1 | MULTI-PURPOSE VALVE CHECK | All OK | Problems met | Operation |
| Check the condition of the multi-purpose valve, located on the fuel supply pipe | Continue to Step 3 | Valve faulty | Replace the valve Op. 1080E11 | |
| 2 | BRAKE SERVO VACUUM VALVE CHECK | All OK | Problems met | Operation |
| Check the condition of the one-way valve on the brake servo vacuum pipe | Continue to Step 3 | Brake servo valve faulty | Replace the valve Op. 3330D20 | |
| 3 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Search for the fault starting from another symptom' | |
Parts & tools for this job For 1998 Fiat Multipla
- PARTEngine gasket setSearch: Fiat Multipla 1998 engine gasket set
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLFeeler gauge setSearch: feeler gauge set
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