Fred Duck Posted May 1 Share Posted May 1 Since starting to use our van again in March, an issue has arisen whereby whenever the clutch pedal is depressed, the engine won't rev above about 2500rpm. Not, really, an issue when driving normally but steep hill starts (as happened last week) are particularly difficult. Our van is 2010 and I can find details of a clutch pedal position sensor on later models but can't find anything for our age of van. I can replicate what happens by holding the revs steady, in neutral, at 4000 and then depressing the clutch pedal whereupon the revs drop to 2500. Releasing the clutch leads to the revs rising back to 4000. Any ideas? FD Quote Link to comment Share on other sites More sharing options...
Keithl Posted May 1 Share Posted May 1 FD, I can see you have a 2010 Bessacarr but which engine do you have? Keith. Quote Link to comment Share on other sites More sharing options...
Fred Duck Posted May 1 Author Share Posted May 1 Apologies, I should have said in my post. 2.2 litre 100PS Peugeot/Puma based. The one with the cam chain. FD Quote Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 2 Share Posted May 2 The last two postings in this Ford Transit Forum thread about a non-revving "62-plate" Puma-motor van https://fordtransit.org/forum/viewtopic.php?f=5&t=185792 mention "a faulty clutch switch". Quote Link to comment Share on other sites More sharing options...
Fred Duck Posted May 2 Author Share Posted May 2 Thanks, Derek. Looking at the Kuga Forum the 'clutch switch' is mentioned. Will discuss with friendly local garage man tomorrow and see what he thinks. FD Quote Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 3 Share Posted May 3 Assuming that there is a sensor-switch in your vehicle's clutch-pedal mechanism, can you disable it so that, when you depress the pedal, it's as if you had not done so? If that then allowed the motor to rev happily to 4000rpm with the pedal depressed, at least you'd know where the problem lay. Quote Link to comment Share on other sites More sharing options...
Alanb Posted May 3 Share Posted May 3 On 01/05/2024 at 11:45, Fred Duck said: Since starting to use our van again in March, an issue has arisen whereby whenever the clutch pedal is depressed, the engine won't rev above about 2500rpm. Not, really, an issue when driving normally but steep hill starts (as happened last week) are particularly difficult. Our van is 2010 and I can find details of a clutch pedal position sensor on later models but can't find anything for our age of van. I can replicate what happens by holding the revs steady, in neutral, at 4000 and then depressing the clutch pedal whereupon the revs drop to 2500. Releasing the clutch leads to the revs rising back to 4000. Any ideas? FD The 2.2 Puma engine uses a "Visteon 347" ECU. The pinout for this controller shows the clutch pedal switch (sensor) connected to Connector B, pin G3. My first thoughts for a cure, would be to check that the switch is not sticking. However I cannot currently offer a theory as to why it should cause the problem posted. Alan Quote Link to comment Share on other sites More sharing options...
Fred Duck Posted May 4 Author Share Posted May 4 Thanks Derek and Alan. Friendly local garage man said it's a new one on him but something is sending a signal to the ECU to drop the revs when the clutch is depressed and so he thinks it's reasonable that it has something to do with the clutch pedal position switch. It's going to him next week for further investigation. On a previous van, 2004 2.0 litre Ducato, an error code did come up in respect of the clutch switch. However, I never noticed it causing any problems when driving and only became aware when the error codes were looked at for another issue. This time it's the other way round, no error code but the problem noted in my OP. FD 1 Quote Link to comment Share on other sites More sharing options...
Fred Duck Posted May 8 Author Share Posted May 8 (edited) Bit more investigation today. As suggested by Derek, I've located the clutch pedal switch and unplugged it's connector. Engine revs exactly as it should with or without the clutch depressed. Re-connect and the no more than 2500rpm with the clutch depressed comes back leading to what seems to be an obvious conclusion. I'm pretty sure this is the switch https://www.buycarparts.co.uk/metzg er/1811665 (although we don't have cruise). However, it's an absolute ba****d to get to unless you're very small and flexible (I'm neither) or either the drivers seat or various dashboard panels are removed so I'm keeping the arrangement I have for it to go to the man that can tomorrow and let him do it. He'll be able to clear any related fault codes that might have now appeared as well. FD Edited May 8 by Fred Duck Quote Link to comment Share on other sites More sharing options...
Keithl Posted May 8 Share Posted May 8 Perhaps that is what is meant to happen and you have just never noticed it in the past? Quote Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 9 Share Posted May 9 This 2010 Ford Transit Forum discussion may be of interest https://fordtransit.org/forum/viewtopic.php?t=71528 Quote Link to comment Share on other sites More sharing options...
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