Disco 2 td5, intermittent check engine light

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mad85

Active Member
Posts
580
Location
Malta
so in my discovery td5 i sometimes get an engine light with some misfiring. it happens every few days and till now it has always resolved itself just by switching it off and on.

ECU errors: Crank speed logged high

The only other thing that i noticed is that it is smoking a little bit more than ir emember it. Turbo seems to be boosting normally.

Smoke test revealed a problem in the breather non return valve - it is no longer non return, not sure what effect that has but ordered a new one

Some data from nanocom that i think might help (taken with engine warm, engine was running normally when i took these readings):

Engine Speed: 768
idle speed error 0
road speed 0
Battery 13.4

Coolant 86.1
Fuel Temp 79.8
Air Inlet Temp 67.2
Air flow 56.7
Ambient pressure 100.79
Manifold Turbo Pressure 101.73
Wastegate 0
Cylinder

Idling:
Accel Way 1 0.554
Accel Way 2 4.515
Accel Way 3 4.662
Accel Way 4 5.020
Coolant 86.1
Fuel Temp 79.8
Air Inlet Temp 67.2
Air flow 56.7


Pressing accelerator (half throttle, or a little less):
Accel Way 1 1.103
Accel Way 2 3.977
Accel Way 3 4.662
Accel Way 4 5.020
Coolant 86.0
Fuel Temp 80.0
Air Inlet Temp 57.8
Air flow 113.5

Cylinders Reading 1:
0 -2 0 0 2

Cylinders Reading 2:
-5 -1 0 4 4

Cylinders Reading 3:
-1 -2 -1 2 2
 
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