Home > Puma (Tdci) > 07 2.4 110 no start (a new thread) |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20413 |
You could have ideally just changed the VCV and called it a day, as it will self learn by itself it doesn’t need a learn process, nor does it needs maps changing.
I know hindsight is a wonderful thing but it is true. What process did you take when fitting the new one itself? (Physically fitting it). Have you tried the original again? It could be a duff new one, sadly it does happen. $W33T $0U7H3RN $UG4R 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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29th Nov 2024 6:34pm |
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Scorpioinbarnsley Member Since: 27 Nov 2022 Location: Barnsley Posts: 8 |
i have not refitted the old one yet. i did the relearn based off conversation i had with pete @ BAS. but also i did it out of order from his instructions of high pressure reset first then pilot relearn. this was an error on my part. it was running fine with the new VCV while i was getting the engine up to 80 degrees for the relearn process.
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29th Nov 2024 6:38pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20413 |
Re-reading your post, you mentioned you removed the fuel line.
You might have an air lock in the fuel line because of that, Pumas can be a bit of a pain to purge air from the fuel line. In the WSM there is a technique for fuel bleeding I think, but I’ve never done it. You can get the same with the fuel filter, if it’s not pre filled with diesel. Then you can get an air lock in the fuel line, this might be what the issue is. $W33T $0U7H3RN $UG4R 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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29th Nov 2024 7:12pm |
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Scorpioinbarnsley Member Since: 27 Nov 2022 Location: Barnsley Posts: 8 |
Don’t think it was air lock because after i fitted the new vcv it ran well when i was bring the car to temp. And then it was running during the whole time of the relearn process. So all this time in total was well into 30-40 min. Which should have been more than enough time for any air if it was in the system to make itself known prior to this no start issue. I’ll look at the airlock issue but I do not think it’s the case.
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29th Nov 2024 7:21pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20413 |
There are sensors like the crank position sensor, that I think will allow for cranking but not fire, but the likelihood of that being a failure at the same time to fail is probably unlikely.
Presumably the alarm and immobiliser is synced as you mentioned abd the red dash light is off before cranking. Have you checked for any logged DTC’s? $W33T $0U7H3RN $UG4R 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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29th Nov 2024 7:33pm |
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Scorpioinbarnsley Member Since: 27 Nov 2022 Location: Barnsley Posts: 8 |
No dtcs. If I can’t get this going by Monday, I’ll just pull the ecu and go to Pete and have the immobilizer removed.
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29th Nov 2024 7:39pm |
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jbcollier Member Since: 29 Apr 2024 Location: Edmonton AB Posts: 102 |
If it cranks, then it is not the immobilizer.
No fuel? Bleed the system as per manual. |
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30th Nov 2024 5:23am |
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Scorpioinbarnsley Member Since: 27 Nov 2022 Location: Barnsley Posts: 8 |
This has been my question I’ve been searching. Does the immbolizer cur fuel or cut crank. The internet is run amuck with lies. But yes it cuts crank. So has to be fuel, and has to be some sort of vapor lock. The next question is why after replacing the vcv which should be the only way for air to enter the system as of recent did it run for so long with no issue. So I’ll bleed the system. But the mystery continues. After this situation I’m 10000000% moving to m57 swap
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30th Nov 2024 7:14am |
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cretesimon Member Since: 01 Nov 2021 Location: heraklon Posts: 51 |
Had one 2.4 that won't run was the fuel pump and the pickup in the tank the plastic had cracked and letting in air for the pump I disconnected the fuel feed pipe and put a can with diesel inside and a rubber hose to it put a bit of pressure to make fuel enter pump and opened feed pipes to injectors to check if fuel coming out
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30th Nov 2024 7:25am |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20413 |
It’s very plausible that there is an air leak somewhere, it might be because the VCV has been changed the vacuum pressure has changed somewhat and fuel rail pressure too.
On mine if I’ve ever left the alarm / immobiliser active and started, it would crank, start for about a couple of seconds if that then cut out $W33T $0U7H3RN $UG4R 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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30th Nov 2024 10:14am |
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Scorpioinbarnsley Member Since: 27 Nov 2022 Location: Barnsley Posts: 8 |
this guy wins the prize!!!!!£20 transfer pump from Amazon fixed it!!!! Was vapor locked. Pump on the line, 4 squeezes.. reconnected… gave it some good cranking and fired up. |
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30th Nov 2024 8:57pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20413 |
That’s what you have to be careful of with the changing of the fuel filter, if it’s not pre primed right to the top you’ll get the same issue with that as well.
Glad you’ve got it fixed, probably be running really nice now with the new VCV. $W33T $0U7H3RN $UG4R 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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1st Dec 2024 11:10am |
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