Diesel power steering

kapilamuni · Oct 10, 2015

Hi,
Is our diesel ECU linked to power steering system? Well, i noticed an increase in idle speed when rotating the steering wheel while parked n engine runing.
Just curious to know. May be a underlying problem?

Regds

wammers · Oct 10, 2015

kapilamuni said:
Hi,
Is our diesel ECU linked to power steering system? Well, i noticed an increase in idle speed when rotating the steering wheel while parked n engine runing.
Just curious to know. May be a underlying problem?

Regds

No it is not linked to the ECU. However idle will increase to avoid a stall as load is put on engine by steering pump as steering is turned. Normal and there is no problem.

kapilamuni · Oct 10, 2015

Thanks but how it happens if ECU has no connection with psteering?

Regds

Bix · Oct 10, 2015

The PAS pump puts load on the engine, the ECU recognises there is load and increases fuel to compensate. It doesn't know why there is extra load, just that there is.

wammers · Oct 10, 2015

kapilamuni said:
Thanks but how it happens if ECU has no connection with psteering?

Regds

Diesel engine speed is controlled by fuel. If the engine is loaded at idle the ECU knows this by the fall in RPM, it then increases fuel to return the idle speed back to it's preset value. When the load is removed it decreases fuel to reduce idle speed back to it's preset value.

kapilamuni · Oct 11, 2015

Got it, thanks.

Diesel power steering

kapilamuni

Active Member

wammers

No longer with us, RIP

kapilamuni

Active Member

Bix

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wammers

No longer with us, RIP

kapilamuni

Active Member

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