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Member Since 18 Dec 2011
Offline Last Active Jan 14 2013 09:27 PM

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In Topic: Cmax 1.6Tdci Cuts Out At 4000Rpm

21 December 2011 - 09:09 AM

Thanks for your reply

I had thought that too (Or maybe a failing fuel pump) but isn't the throttle of a diesel control by fuel flow (As opposed to a petrol car that is controlled by airflow), and therefore if the flow was restricted (Due to a dirty fuel filter or failing fuel pump) then wouldn't that just prevent the car from accelerating any further, rather than actually cutting out?

I guess its not that simple with a turbo car as the fuel flow and airflow need to be in balance, so maybe with the fuel restricted the ECU detects that the mixture is way too lean and therefore cuts the power.... but if this were the case then I'd expect to see a fault code.

I guess I'll have to take it to the garage.