Home > Technical (L322) > Limp Mode - Manifold pressure |
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chefkenmore Member Since: 11 Jan 2015 Location: Fearnan perthshire Posts: 735 |
Sounds very similar to my car! Mike Park MMP, did a smoke test on mine, revealing a hair line crack on the inlet manifold!
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30th Sep 2018 8:07am |
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gilesharrison Member Since: 04 Aug 2018 Location: Cumbria Posts: 163 |
Thanks for the reply.
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30th Sep 2018 8:24am |
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gilesharrison Member Since: 04 Aug 2018 Location: Cumbria Posts: 163 |
I've been reading more about the split inlet manifolds on these engines.
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30th Sep 2018 11:59am |
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northernmonkeyjones Member Since: 24 Mar 2012 Location: derby Posts: 8488 |
Have you checked they rest of the hoses?
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30th Sep 2018 8:26pm |
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gilesharrison Member Since: 04 Aug 2018 Location: Cumbria Posts: 163 |
Thanks for the help.
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1st Oct 2018 7:51pm |
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northernmonkeyjones Member Since: 24 Mar 2012 Location: derby Posts: 8488 |
If it’s reading the wrong pressure, can you read the resistance of the MAP sensors at the sensor with a multi meter. Not sure if or what they will read, but if they do then obviously they should read the same.
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1st Oct 2018 7:56pm |
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Jamiehol Member Since: 26 Sep 2014 Location: Ipswich Posts: 225 |
If there is no obvious splits in the hoses from Turbo to Intercooler and Intercooler to Throttle body then I would recommend a smoke test, a pressure test will say if you have a boost leak but a smoke test should help you identify where any leak is. |
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1st Oct 2018 8:52pm |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2453 |
Split manifolds will cause oily soot on nearby parts so look for tell-tale signs. |
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2nd Oct 2018 12:09am |
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Nick591 Member Since: 04 May 2017 Location: Seaton Dalaval Posts: 193 |
My car is almost identjcal age and mileage and has the same engine system fault and code. In my case it happens usually with steady relatively gentle acceleration. If I keep feathering the throttle and therefore don't give the car an opportunity to detect a steady state imbalance it is possible to avoid it most of the time but it still happens anyway. The code indicates the problem is with the drivers side bank of cylinders. No splits in hoses that I can detect and a smoke test didnt reveal any leaks on the high pressure side. The manual suggests either map sensor fault or turbo fault. Have just replaced map sensor that side but it still happens unfortunately. LR dealers apparently can test the turbo actuation by driving it using pwm input and noting the corresponding position. If not a smooth curve the manual says replace the turbo which is a big expensive job. It is spoiling my enjoyment of the car. I am about to take delivery of iid tool so I can be more self sufficient but I will watch this thread with interest to see if you can solve it. One other thing I have noticed is that when the car seems to be inclined to play up the engine rpm can sometimes osscilate between about 1500 and 2500 rpm when setting off from standstill as if the feedback loop between the map sensor and turbo boost setting is not working correctly. A while ago I put dielectric contact grease on the map sensor connector pin sockets and it ran perfectly for several weeks. Perplexing. Previously a 2008MY Tonga Green Vogue SE 3.6 TDV8 |
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2nd Oct 2018 8:30pm |
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Nick591 Member Since: 04 May 2017 Location: Seaton Dalaval Posts: 193 |
. Previously a 2008MY Tonga Green Vogue SE 3.6 TDV8 |
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2nd Oct 2018 8:41pm |
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gilesharrison Member Since: 04 Aug 2018 Location: Cumbria Posts: 163 |
Thanks for the ply Nick.
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3rd Oct 2018 6:24am |
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DMRR Member Since: 14 Apr 2010 Location: Northamptonshire Posts: 2027 |
Mine did this for 6 months, tried everything as above, no change. Eventually it started smoking under load and then on Monday - BANG! Lunched turbo ........
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3rd Oct 2018 8:48am |
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gilesharrison Member Since: 04 Aug 2018 Location: Cumbria Posts: 163 |
I know I'm clutching at straws and trying to avoid the fact that I'm going to need new turbos but I'll try swapping the MAP sensors over and see if it makes any difference.
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3rd Oct 2018 3:11pm |
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DMRR Member Since: 14 Apr 2010 Location: Northamptonshire Posts: 2027 |
My big bill = a 2009 Westminster which I am picking up later today ..... Land Rover Addict
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3rd Oct 2018 3:18pm |
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