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Ears of a Hawk



Member Since: 19 Feb 2018
Location: Ayrshire
Posts: 10
Scotland 2001 Defender 90 Td5 SW Epsom Green
TD5 with no boost
Hi, can anyone help out. I have a 2001 TD5 90. I am low on power and have no turbo boost (fitted a gauge). Seems to drive normally up to 70MPH with no issues then gutless. I have looked at usually suspects of wastegate, hoses, leak testing with soapy water etc - no issues.

Inspected intercooler for holes - not a problem. No audible blowing from part of the engine. Can anyone suggest anything? The truck has done 200 thousand miles at this point.

Thanks
Post #687558 19th Feb 2018 1:15pm
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Laurie



Member Since: 22 Feb 2008
Location: Sussex, England
Posts: 2897
England 2005 Defender 90 Td5 XS CSW Bonatti Grey
Intercooler blocked with gunge? 
Post #687564 19th Feb 2018 1:49pm
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Tank



Member Since: 25 Jul 2014
Location: Fife
Posts: 431
Scotland 2004 Defender 90 Td5 HT Zermatt Silver
MAP sensor? Zero boost would mean the MAP, thats what my problem was anyway. Do you have a NanoCom? Double check no boost with that too? I replaced my MAP sensor and all was good Smile
Post #687566 19th Feb 2018 2:03pm
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Ears of a Hawk



Member Since: 19 Feb 2018
Location: Ayrshire
Posts: 10
Scotland 2001 Defender 90 Td5 SW Epsom Green
TD5 with no boost
Thanks for replying. Inspected the intercooler - it was clear.

To give you some more background - The truck was going great - quickest its ever been then got an issue. It felt like it was running on 3/4 cylinders. Put it in to my mechanic and he checked the injector seals. Visually checked out ok but they were replaced anyway. When it came back - it drove OK apart from the no boost.

There is no evidence of a engine problem . i.e. black, blue or white smoke etc

Do you think it could be running on 4 cylinders?
Post #687569 19th Feb 2018 2:06pm
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Ears of a Hawk



Member Since: 19 Feb 2018
Location: Ayrshire
Posts: 10
Scotland 2001 Defender 90 Td5 SW Epsom Green
TD5 with No boost
Hi Tank, I have ordered a NanoCom and I am waiting for it to turn up. However, I assumed that down stream of the turbo at higher revs I would have at least some pressure. When the truck is reving the Intercooler pipes can be squeezed easily. thanks
Post #687575 19th Feb 2018 2:21pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
Try unplugging the maf and driving around for a bit and see if your power is back. Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #687579 19th Feb 2018 2:31pm
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Balvaig



Member Since: 19 Feb 2016
Location: Fife
Posts: 730
Scotland 2016 Defender 90 Puma 2.2 Landmark LE Corris Grey
Check that the injectors have been replaced in the original cylinders when the seals were replaced. Unless they were removed one at a time they can get mixed up. This gives poor running.
Post #687581 19th Feb 2018 2:38pm
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Ears of a Hawk



Member Since: 19 Feb 2018
Location: Ayrshire
Posts: 10
Scotland 2001 Defender 90 Td5 SW Epsom Green
TD5 with no boost.
Thanks for your posts. I will try the MAP disconnect but my only concern is that it was replaced recently. But you never know. Also, I would like to think that my mechanic (who has a lot experience with land rovers) wouldn't mix up the injectors - but I suppose everybody can have an off day. thanks
Post #687586 19th Feb 2018 2:54pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
It's the MAF you need to unplug not the MAP Thumbs Up Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #687588 19th Feb 2018 2:59pm
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jrule



Member Since: 10 Aug 2015
Location: Hertfordshire
Posts: 302
United Kingdom 2000 Defender 90 Td5 CSW Oslo Blue
Anything to do with clutch switch?
Post #687593 19th Feb 2018 3:12pm
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Ears of a Hawk



Member Since: 19 Feb 2018
Location: Ayrshire
Posts: 10
Scotland 2001 Defender 90 Td5 SW Epsom Green
Sorry, just a typo. It was the MAF sensor that was replaced
Post #687596 19th Feb 2018 3:15pm
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Tank



Member Since: 25 Jul 2014
Location: Fife
Posts: 431
Scotland 2004 Defender 90 Td5 HT Zermatt Silver
If you have no boost then it is your MAP sensor on the fuel intake, not the MAF sensor on the air intake side. If the MAP is dead or even disconnected, then you'll get no boost and no power. That was the problem with mine. Check that the mechanic hasnt disconnected the MAP sensor or bent the pins putting the plug back on.

Tank
Post #687608 19th Feb 2018 4:20pm
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Tank



Member Since: 25 Jul 2014
Location: Fife
Posts: 431
Scotland 2004 Defender 90 Td5 HT Zermatt Silver
Reading your post again I bet the MAP sensor has not been plugged back in or pins are bent!
Post #687609 19th Feb 2018 4:21pm
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Ears of a Hawk



Member Since: 19 Feb 2018
Location: Ayrshire
Posts: 10
Scotland 2001 Defender 90 Td5 SW Epsom Green
TD5 with no Boost
Can any Defender owners with high mileage help me out. I took off the Exhaust manifold heat shield and inspected for warped manifold. No visible signs. It didn't show up anything using soapy water spray.
Link up my new nanocom and checked Turbo pressure. This shows that the turbo pressure gets up to a maximum of 0.15 bar at over 2500rpm - it doesn't have enough to actuate the wastegate. Is there anyone out there who has had an issue like this - perhaps turbo related. Any additional tests I could perform before tearing down the Turbo. thanks
Post #689266 27th Feb 2018 1:02pm
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bankz5152



Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2168
2004 Defender 110 Td5 DCPU Epsom Green
Where is your boost gauge tapped in?

100% all the boost hoses are intact and not leaking? Inlet manifold gasket is in place and not leaking?
Post #689272 27th Feb 2018 1:13pm
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