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Gareth



Member Since: 12 Dec 2011
Location: Woodford
Posts: 1115
England 
TD5 Turbo boost actuator - should it move?
The turbo actuator arm seems stuck fast on my TD5. With the engine shut down, I can't move it at all by hand. Is this how it should be?

It seems to be down on power at low revs, takes off like a Quattro when it hits higher revs. 2021 Defender 110 X-Dynamic HSE D300 MHEV
1966 S2a 109 aka Betsy
Post #149974 12th Jun 2012 7:42pm
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diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6124
United Kingdom 2006 Defender 110 Td5 SW Epsom Green
They do move, but are very hard to do by hand, usually if you have a pair of pliers then you can shift them, BUT, they should move, so if yours is siezed then you'll be down on power...

try moving it back and forth and applying some WD40 to free it up a bit.
Post #149997 12th Jun 2012 8:53pm
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Gareth



Member Since: 12 Dec 2011
Location: Woodford
Posts: 1115
England 
Ok, I only tried with my hand, so will go and try a bit harder with some grips Thumbs Up . 2021 Defender 110 X-Dynamic HSE D300 MHEV
1966 S2a 109 aka Betsy
Post #150000 12th Jun 2012 8:56pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5800
2006 Defender 110 Td5 USW Zermatt Silver
If has no power, then suddenly get a surge of power, that is normaly signs of failed MAF

Andy
Post #150061 13th Jun 2012 5:53am
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me@td5.org



Member Since: 16 Jan 2011
Location: Warwick
Posts: 856
2000 Defender 90 Td5 HT Epsom Green
&feature=plcp

Have a look at this video from IRB Developments on how to check your actuator is free.
Post #150611 16th Jun 2012 10:52am
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Alive Tuning



Member Since: 01 Mar 2010
Location: Louth
Posts: 610
United Kingdom 
Clamp some mole grips onto the shaft of the turbo wastegate actuator rod, and using the palm of your hand, push against the mole grips, away from the actuator diaphragm housing, and the wastegate should open, then close under spring pressure. The movement should be smooth throughout the stroke.

If it feels notchy, or it sticks, then spray some wd40 onto the pivot, where the shaft goes into the turbine housing on the exhaust side, then work the actuator rod back and forth with the mole grips until it feels free through its entire stroke.

As previously mentioned, it sounds a bit like the MAF sensor may be faulty, causing it to feel flat below 2000 rpm.
Post #150637 16th Jun 2012 5:41pm
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Gareth



Member Since: 12 Dec 2011
Location: Woodford
Posts: 1115
England 
New MAF sensor fitted today, and problem cured. 2021 Defender 110 X-Dynamic HSE D300 MHEV
1966 S2a 109 aka Betsy
Post #166368 4th Sep 2012 6:19pm
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