Re: Disco TD5 hesitating
It is most likely to be the airflow meter that needs replacing.
Loads of these go out of range when you floor them. This results in the
the TD5 ECM momentarily seeing a 0 reading for the air mass and the
It won't be the throttle potentiometer, as you would experience the
hesitation at different speeds through the gear range.
As Richard says, plug into a tester like Autologic or T4 and read the
fault memory. If I am correct an airflow fault will be logged in the
memory. Clearing the fault won't clear the problem though.
> In message <firstname.lastname@example.org>
> "Ian" <email@example.com> wrote:
>>My TD5 Disco has started to hesitate when accelerating (even lightly) when
>>heavily loaded at high speed, i.e. greater than 70mph. Is this a sign of
>>fuel starvation (fuel filter, fuel pump), or something worse/more expensive?
> It could be lots of things, but a quick plug into TestBook
> might help - I'm thinking that the Throttle Potentiometer
> may have a fault that needs clearing.