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kelvo

Misfire/cutting out when clutch pressed

4 posts in this topic

1.4 Zetec is misfiring badly / cutting out when the clutch pedal is even lightly depresssed a couple of centimeters.

This only happens when the engine has reached full running temperature and is perfect until then.

The strange thing is, I've tried removing the clutch sensor at the top of the pedal and both shorting the contacts or leaving them open circuit but the ECU still knows when I touch the clutch.

Is there another sensor??

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1.4 Zetec is misfiring badly / cutting out when the clutch pedal is even lightly depresssed a couple of centimeters.

This only happens when the engine has reached full running temperature and is perfect until then.

The strange thing is, I've tried removing the clutch sensor at the top of the pedal and both shorting the contacts or leaving them open circuit but the ECU still knows when I touch the clutch.

Is there another sensor??

Hi i have had a similar prob with the 1.25 engines & it has turned out to be the ECT sensor there is a mod for the wiring its a gold plated plug but alas the last 2 has been the sensor Gaz

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Hi i have had a similar prob with the 1.25 engines & it has turned out to be the ECT sensor there is a mod for the wiring its a gold plated plug but alas the last 2 has been the sensor Gaz

Thanks, I've cleaned the connector and I'm fairly sure it's not that as the OBD reader shows the temp sensor reading rising nicely and the problem is happennning from cold now. Also I still can't fathom how it only happens when touching the clutch EVEN with the clutch sensor removed.

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I came across similar problem many years ago, which was worn thrust washers on the crank, allowing the crank to move forward when the clutch was pressed and the flywheel contacted the block, I think.

Possibly a similar thing but moving the position of the crank sensor so losing the signal.

Hope it's nothing so drastic though.

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