V70 d5 185bhp 2006 please help this frustrated engineer
Hi all
New to forum, bought myself a 185bhp d5 2006 AWD estate So here goes The faults/codes are Play in steering PDC issues (has front and rear) Needed a service Output signal 5th injector faulty Boost pressure fault signal Atmospheric pressure fault signal Swirl flap actuator code What I have done Steering inner ends Full service Swirl flap Actuator repair and adapt values Front bumper off new sensor for PDC Rear bumper Tormorow as showing needs a sensor too for PDC Leaves me injector, boost and atmospheric all saying faulty signal The car runs well then goes into limp mode with no boost this is occasionally and beside that runs I would say well I believe the injector is a separate issue to the boost and atmospheric. The latter 2 being the cause of limp mode so fitted a genuine MAP sensor which goes into the Intercooler Codes and fault remain Although the boost reading is slightly higher with the engine off than with the original map sensor I've checked the boost controller and cleaned it Checked the vac lines to the engine mounts, cooler appears ok too. Turbo seems to spool well and plenty power except when in limp of course So leaves me to believe that the atmospheric sensor is at fault which is located within the ECU? Please help guys this is frustrating I've tried using live data Atmospheric is at 996 which to me is actually vacuum and so maybe wrong Can get you any details you may need and am not too shabby with the spanners or a meter. My scanner is not Vida although is very good on almost anything Thanks in advance |
The MAP sensor should read the same as the Atmospheric sensor with the engine off, the Atmospheric sensor is in the ECU,
is the MAP sensor reading the same as true outside air Atmospheric reading, use accuweather for the reading or a weather station , The ECU uses its built in Atmospheric sensor to compere against the map sensor, so if the Atmospheric sensor is not reading the same as a weather app/station that is the problem, what obd reader are you using to read Atmospheric data, have a look where the ecu is and see if there are any breathers that are blocked, Dave |
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Hi yes my reading is very very close to the weather station / app reading, but I am nearly at sea level,
but it should give him a good idea , as both of his sensors are not matching Data readings, Dave |
You checked the vac lines to the mounts but have you checked the actual mounts??? Big tip there
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The vac mounts will not make any difference to the turbo/boost reading/limp mode,
Dave |
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Yes I am, the 185 has a electronic actuator ,
Dave |
Hi guys so Your thinking on same lines that the atmospheric sensor is issue
Atmospheric was 996 Desired boost was 1025 Actual boost 1098 This was at idle I didn't physically check the engine mounts besides visual Although the problem is night and day. Like drives great for quite some time then no boost at all Believe the actuator is electric Do I remove ecu then or is there anything I can check and how do I check Thanks for reply |
Also at engine off the 2 readings are not identical in fact I believe same as at idle.
The 996 value seems odd as that would mean it's under vacuum ? |
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