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CRJ

Member Since: 12 Mar 2011
Location: Sealand - Denmark
Posts: 253

1991 Defender 90 200 Tdi ST Alpine White

Turbo Whistle and limp mode

Hi. I recently had the gasket between the turbo and manifold changed with the modified one ( Nak) . Now it is leaking again again... question is if i can remove the turbo and simply work on the exhaust manifold with a piece of sandpaper wrapped around something that is aligned. - and the same on the turbo. I suppose it is because the flanges must be "warped" too much for the gasket to compensate. Should I apply anything apart from the gasket?
Another question - could the leak cause the engine to enter limp mode shortly (30 sec) after pulling away from start? and sometimes after about 60 km?
Does the leak make the "pull" significant less? I had the car remapped and for a long while it pulled like a train - but then slowly losing a bit of its pull - never got it back even after changing gasket - could be that the leak never have been fixed properly?
Currently cannot read out fault codes - placed a big Dewalt mitre saw on top of the ATRIC

- hope Gary can get a new screen for me.
Regards
CRJ 88 Ser. 3 1980 -sold
Puma 130 - 08- sold
90 200tdi 1991 - sold
88 Ser. 3 1977 200 TDI
110 CC 2003

3rd Dec 2011 10:27am

CRJ

Member Since: 12 Mar 2011
Location: Sealand - Denmark
Posts: 253

regarding the Limp Mode - I just turn the engine of and start again - everything is ok 88 Ser. 3 1980 -sold
Puma 130 - 08- sold
90 200tdi 1991 - sold
88 Ser. 3 1977 200 TDI
110 CC 2003

3rd Dec 2011 10:31am

wslr

Member Since: 18 Jul 2010
Location: Wellington, Somerset
Posts: 581

If manifold pressure is not as high as the engine management expects to see with driver demand information then it will pull back the power by introducing an overboost/underboost engine strategy which drops the power. If you are not able to hit the 200/220kpa it would expect to see because of a leak at the manifold/turbo, then it is likely to be this. There can be other reasons, but if you know there is a leak there, then it is likely to be this causing the problem.

3rd Dec 2011 10:44am

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