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Phantom



Member Since: 29 Jan 2013
Location: Isle of Wight
Posts: 136
United Kingdom 
Discovery 2 , Aaaahhhhh!!!
Sorry! I understand its not a defender ( I've got two of those as well! ), however........
Brought a d2 a few week ago 86k / 15p with a known engine fault - head leaking fuel into sump, the lack of lubricant scored the cam shaft and numerous other parts so we brought a used engine from a reputable breakers , 71k with supporting paperwork and swapped the lumps over last week. Fires up on the key and drives lovely............except the first 10 seconds she's as flat as a flat thing, no power Sad , then it's like a switch is flicked, revs jump up and she's off! You can run 10 miles, no issues, pulls like a train but if you turn the ignition off, restart the vehicle immediately the faults back......
It's just annoying Sad

Swapped the maf for a known working unit and also ran with the maf disconnected - no different
Swapped the ecu, programmed the injectors - no different
She's got a egr bypass
Checked turbo waste gate action, all fine
Swapped the waste gate control modual - no different
Pulled the map sensor and cleaned - no different
Injector loom dry
Hawk-pro shows no faults

So what am I missing?

Thanks in advance

Lee
Post #258450 13th Aug 2013 7:34pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5741
2006 Defender 110 Td5 USW Zermatt Silver
Strange it's not the MAF. Classic symptoms of a failed one in my experience.

Will think about it and let you know if anything comes to mind.

Good luck
Andy
Post #258451 13th Aug 2013 7:46pm
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bob neville



Member Since: 30 Apr 2009
Location: Marbella
Posts: 3248
Spain 2001 Defender 90 Td5 SW Epsom Green
Turbo hose delaminated or split ?

Bob 2015 Jaguar XE240 R Sport - goes like ....... !!
2013 Defender 90 CSW - sold
2009 Defender 110 Double Cab - sold
2001 TD5 90 CSW - offroad project - sold to a forum member
2011 Porsche Boxster - for the sunny days !
Post #258452 13th Aug 2013 7:52pm
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diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6105
United Kingdom 2006 Defender 110 Td5 SW Epsom Green
Fuel pump? giving the correct pressure?

Have you connected the flow & return the right way around? so it's taking some time to purge the system? The pipes aren't too far from each other, so it's possible to do them the wrong way around (ask me how I know...) Laughing
Post #258454 13th Aug 2013 7:56pm
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Phantom



Member Since: 29 Jan 2013
Location: Isle of Wight
Posts: 136
United Kingdom 
bob neville wrote:
Turbo hose delaminated or split ?

Bob


Don't think so, it's only for the first 10/20 seconds then fine, if it was a hose then I guess it would be all the time
Post #258480 13th Aug 2013 9:21pm
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Phantom



Member Since: 29 Jan 2013
Location: Isle of Wight
Posts: 136
United Kingdom 
diesel_jim wrote:
Fuel pump? giving the correct pressure?

Have you connected the flow & return the right way around? so it's taking some time to purge the system? The pipes aren't too far from each other, so it's possible to do them the wrong way around (ask me how I know...) Laughing


I'll double check the fuel pipe work tomorrow - hopefully it's that simple Smile
Post #258481 13th Aug 2013 9:23pm
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Phantom



Member Since: 29 Jan 2013
Location: Isle of Wight
Posts: 136
United Kingdom 
landy andy wrote:
Strange it's not the MAF. Classic symptoms of a failed one in my experience.

Will think about it and let you know if anything comes to mind.

Good luck
Andy


So....................its fixed!

No faults on the Hawk Eye pro, checked everything again inc fuelling pipework and found nothing, brought a new OEM MAF, fitted it and fault gone! Yippee! The mad thing is I'd already tried two other ( used ) MAF sensors, both Siemens units and also run with the MAF disconnected, you learn something every day, thanks for all the pointers
Post #260788 23rd Aug 2013 9:45am
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Millsy94



Member Since: 06 Jun 2013
Location: Gloucestershire
Posts: 91
England 2003 Defender 90 Td5 PU Aintree Green
I have exactly the same in my 03 90, done it ever since i bought her and only recently was i informed that it wasn't a safety feature, likewise mine has been on the diagnostics and shows nothing wrong, after those first few seconds it drives like any other td5 i know of, just a Censored if you are stall on a roundabout as its a steady crawl. having spoken to monster tuning they had the same with their eight wheeler and after replacing all sorts just replaced the ECU. ED
Post #261186 25th Aug 2013 4:00pm
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