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Thread: ESP/TC torque reduction - how?

  1. #1
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    Question ESP/TC torque reduction - how?

    Hi all,

    When ESP/TC decides that it can't control the vehicle just by braking wheels, it sends a "torque reduction" request to the engine management system.

    I've seen somewhere that this isn't achieved by closing the throttle valve, so how is this implemented?

    Thanks!

  2. #2
    Regular Member Gsi3.2's Avatar
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    On the old v6's the used to do it by 'shutting off' one or two cylinders by not letting the coil pack spark that cylinder..immediate power reduction..

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    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

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    Must cut the fuelling as well. If not, and if just the 'spark bit' is not done, then unburnt fuel down the exhaust pipe, onto catalyst and not a good situation, having the exothermic reaction destroy your expensive cat.

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