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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines.

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V70 d3 map sensors

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Old Feb 14th, 2020, 22:47   #1
Black dog

Last Online: Today 00:26
Join Date: Jul 2016
Location: Derry
Default V70 d3 map sensors

I'm finally getting around to troubleshooting a boost issue on the v70. It's had a boost issue since I got it.
It is lumpy to drive no power down low and then the boost comes in all of a sudden around 1800 rpm. It then pulls all over the road with torque steer. It feels and sounds to over boost then, there is a slight wine from the turbo like its under far too much pressure.
It's got fault codes p003a85 and p029900
It's been smoke tested for leaks and has none. I'm certain it's over boosting although reporting under. I've read identical problems on the v60 threads but no conclusions.
I suspect faulty map sensor. Everyone suggests the sensor on the intercooler but the only map sensor I can see is on the intake manifold. Can anyone confirm it has more than one map sensor.
2006 s60 2.4d currently @239.5k / work horse
1992 polo coupe / just for fun
1972 beetle fully restored
2011 v70 d3 resuscitated.
If I've offended you, good! That was my intention
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