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badMechanic

New Member

• Jun 18, 2019

• #1

Hellooo everyone, so i have problem with my car, something evil is inside, i have limp mode, engine cutt off on 2500rpm,error code p0190 rail sensor.... I have change rail sensor, low pump, fuel filter, high pressure sensor on pump, map sensor, air filter, boost electric valve.... And i check all wiring on engine to ecu, take same car from my friend and try maf sensor, crank and camshaft sensor, boost air temperature, injectors... And nothing change....
Low pump 380-350
High pressure 28000-80000 then limp mode
Pressure sensor 0.71
Maf 450-620
Map 100-117
Boost air temp 128-138C when engine is not runing one day....

 

Nodge68

Well-Known Member

• Jun 18, 2019

• #2

The boost temperature is showing as too high, by a huge margin. It shouldn't be over 40-50°C under sustained full load.

 

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badMechanic

New Member

• Jun 18, 2019

• #3

I just unplug boost air temperature sensor, and nothing is change, stil 128c,wiring to ecu is ok.... Maybe ecu fail?

 

Nodge68

Well-Known Member

• Jun 18, 2019

• #4

badMechanic said:

I just unplug boost air temperature sensor, and nothing is change, stil 128c,wiring to ecu is ok.... Maybe ecu fail?

Click to expand...

Maybe the diagnostic reader isn't giving the correct data for that sensor?

 

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badMechanic

New Member

• Jun 18, 2019

• #5

I try, same thing

 

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pscan.eu

Well-Known Member

• Jun 26, 2019

• #6

This is the live data from my wife's TD4 idling and captured with pscan

 

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dieselonly

Member

• Jan 4, 2024

• #7

So what is all about with this reading?
Got the same problem with Boost Air temperature, could be software issue?

I don't see this parameter on @pscan.eu screenshots and @badMechanic used Delphi software.
I've tried Autocom, Delphi and Wurth software, all give the same reading.

How to measure signal from sensor coming to ECU?