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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 1979  
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If you have a code reader you could see if their are any DTC’s . The absence of which generally point to a VCV which is a real issue with the 2.4’s.
My initial view is fuel filter then VCV if no DTC’s. Also lubricate the turbo actuator linkages with a light oil, they may be sticking. If VCV you need a genuine Denso from a trusted supplier as their are many fakes out there. Ps. I have my first, and best, Catfish and chips in Atlanta 25years ago  |
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15th Aug 2024 9:04pm |
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| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1776  
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Aa above for the problems, but off topic, how have you managed to register a 2007 Puma in the US of A?
I thought they were a 'banned' vehicle due to crash safety etc until they reached classic 25 year status? Cheers Keith |
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16th Aug 2024 6:38am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20292
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Clutch switch, VCV, most likely. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️
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16th Aug 2024 8:52am |
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| Will@LRW Member Since: 04 May 2019 Location: UK Posts: 177 
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Since the crushing incident in 2013, a lot of law suits flew around and things have relaxed a bit, or maybe there are some more loopholes. There are quite a few Pumas in the US, or older Defenders with Puma engines. My old 1992 Defender went to the US in 2022 (not by me) and it wasn't on its original chassis... LR Workshop Find a Defender's history and spec: https://defender.lrworkshop.com |
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16th Aug 2024 6:56pm |
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| hrat2 Member Since: 11 Aug 2024 Location: Georgia Posts: 9  
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Turns out it was the VCV, went ahead and did a full service and replaced the clutch switch as well. There are a few loopholes to get them over to US if you're willing to put up the $$ its fully legal just takes time and patience. Is the VCV a normal maintenance item or just a one time replace? Do you remember the catfish restaurant in Atlanta???
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19th Aug 2024 7:37pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20292
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VCV is serviceable (by replacement - should have made that clear), it should have a relatively long life but often isn’t always the case, and some people have some bad luck with them.
It’s sort of on par with the coolant, you should really get a minimum of 5 years service at least if not double that. The PRV is usually fine left well along, and there isn’t a learn required. I found when I changed mine it made a huge amount of difference to power, especially in higher gears. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️ Last edited by custom90 on 20th Aug 2024 5:00pm. Edited 1 time in total |
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19th Aug 2024 9:06pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17333 
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It usually is. Anytime you have rough or hesitant running, particularly when sudden changes in demand on the engine are made, and there are no DTCs, think VCV.
It is a non-serviceable throw-away part. There are many cheap and even counterfeit parts on the market and these are worth avoiding since they either have very short service lives or simply don't work at all. In my experience (over 14 years and 275k miles with my 2.4) a quality VCV has a life expectancy of around five years and 80-100k miles on a daily use vehicle. It is likely to be less on a vehicle used irregularly (VCVs don't generally wear out, they seize up). If you get dirt or water in the fuel it will kill the VCV very quickly, and if you have had water or dirt ingress it is advisable to change the VCV as a matter of routine. A defective VCV very seldom produces any DTCs on the ECM, but you may be able to spot fuel rail irregularities if you have the abiity to monitor FRP in real time. Generally it is the absence of any DTCs which points to the VCV. |
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20th Aug 2024 8:30am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20292
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It’s almost like LR planned it that no DTC would be produced so it would be brought in with engine or fuel trouble.
New fuel pump sir? 
 ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️ |
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20th Aug 2024 5:06pm |
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