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martinfiattech



Member Since: 13 Nov 2013
Location: leicester
Posts: 422
England 
Of course it`s right , Very Happy

The same can be monitored if you used 8 hall effect sensors for example, within the gear lever housing for lever position. This might be expensive for manufacture not to mention the extra wiring required.

A Gear box input shaft speed sensor would do the same job as fitted to semi auto`s / fully automatic, as soon as the clutch is engauged the main shaft will rotate thus informing the ecu of transmission speed.
All good fun if you have a dragging clutch. Your semi auto box has now become a box full of problems, any comfort matic owners out there will understand. Big Cry Excuse the spelling I`am better with spanners and wires.
Post #341681 29th Jun 2014 9:56pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6346
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Very Happy

nail on the head !!!

as mentioned elsewhere I've got clutch problems and it would appear the clutch is dragging intermittently. my understanding is the ECM has a torq sensor and this is in part is why you see the engine revs drop to 800 rpm with no load / no speed from 900rpm. consider the clutch switch informs the ECM to reduce torq when changing gears to help with gear harmonisation / smoother gear changes. now if everything thing is working as it should except for an intermittently dragging clutch and perhaps you get a pig of a truck to drive with intermittent diabolical gear changes that can't be predicted and as a result has greatly speeded up the wear on my drive flanges - possible?
Post #423757 15th May 2015 11:43am
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