 | Home > Puma (Tdci) > Cut out after pulling off motorway… |
 
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| cypermethrin Member Since: 15 Dec 2010 Location: Berkshire Posts: 84   
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OP here
So I cleaned both MAF and MAP and did the return journey today No issues at all same 1.5 hours at 70mph Will see if there are any codes logged Thanks for the help and replies |
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19th Feb 2022 3:37pm |
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| Race.it Member Since: 27 Aug 2019 Location: Algeciras Posts: 741  
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Great news. Searching for my first Defender...and started just as Covid hit, so talk about timing.
5 months after starting the search I found it, and here is the details |
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19th Feb 2022 3:40pm |
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| cypermethrin Member Since: 15 Dec 2010 Location: Berkshire Posts: 84
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OP back again
Well sorry to report it cut out again yesterday - this time pulling out of the drive ! Same as before - lost power and eventually stalled. Started up again just fine Scanned for DTC codes - none triggered. All systems reported working So where to start ? Considering the VCV is a year old - and it’s on its original MAF and MAP - which of these makes sense to swop out first ? The forscan code reader has ability to take live MAF and MAP data - but I am not sure what I should be looking for ? Any advice and counsel welcome - TIA |
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22nd Feb 2022 2:09pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16892 
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This does sound very typical of a faulty VCV.
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22nd Feb 2022 2:29pm |
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| steveww Member Since: 05 Jan 2022 Location: Uppingham Posts: 539 
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Newbie question. What’s a VCV?
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22nd Feb 2022 3:09pm |
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| Race.it Member Since: 27 Aug 2019 Location: Algeciras Posts: 741
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A whole world of pain. 😂
Volume control valve, it sits on the fuel pump and regulates the flow of fuel up to the injectors. Searching for my first Defender...and started just as Covid hit, so talk about timing. 5 months after starting the search I found it, and here is the details |
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22nd Feb 2022 3:21pm |
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| steveww Member Since: 05 Jan 2022 Location: Uppingham Posts: 539
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I got lost after carburettors and points. All this electrickery in modern cars is a mystery.
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22nd Feb 2022 5:56pm |
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| Race.it Member Since: 27 Aug 2019 Location: Algeciras Posts: 741
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To add to the confusion think it’s called a scv on a transit Searching for my first Defender...and started just as Covid hit, so talk about timing.
5 months after starting the search I found it, and here is the details |
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22nd Feb 2022 10:29pm |
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| scrivs78@gmail.co.uk Member Since: 20 Dec 2020 Location: London Posts: 2 
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I had similar issue. No power on accelerator, then loosing power and eventually cutting out almost always after traveling at a constant speed for a bit. It eventually got more and more frequent, eventually happening almost as soon as you left the driveway, so i had no trust in it.
Changed VCV and problem fixed, been fine ever since, but, always a but, its now very "lumpy" on cold, once engine to temp, all good and smooth. I had already done all the normal stuff (MAF, MAP, EGR etc) |
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23rd Feb 2022 11:21am |
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| cypermethrin Member Since: 15 Dec 2010 Location: Berkshire Posts: 84
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Thanks everyone - VCV on order will report back!
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23rd Feb 2022 7:47pm |
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| cypermethrin Member Since: 15 Dec 2010 Location: Berkshire Posts: 84
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OP back again
So VCV changed and relearnt and all seems to be well again Trip from Berkshire to Yorkshire Dales and back to normal ! Thanks for all your help |
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1st Mar 2022 11:37pm |
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| Race.it Member Since: 27 Aug 2019 Location: Algeciras Posts: 741
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Great news to hear Searching for my first Defender...and started just as Covid hit, so talk about timing.
5 months after starting the search I found it, and here is the details |
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2nd Mar 2022 7:55am |
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| Julie Member Since: 07 Oct 2017 Location: Nantes Posts: 421  
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OEM ? Britpart ? And did you ask for refund / replacement ?  |
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3rd Mar 2022 9:20pm |
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