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[TheBoy]

Hang on, you had pulled out the immobiliser?  The Spanner light isn't flashing?

Stop randomly changing parts!

That photo is representative not my immo. But I'm planning on getting one giving the price

The spanner light is on and isn't flashing.

So don't get a new immobiliser, as that is not the fault.

What are the trims doing?

[TheBoy]

Actually, its not clear, are you seeing a P0335 code?

[Doctor Gollum]

Actually, its not clear, are you seeing a P0335 code?

There's two threads essentially referencing the same light on two different cars from two posters.

This one had some top end work done, oil cooler related. Soon after started running poorly and now won't start.

OP thinks it's an immobiliser issue but has been digging around with oppityfukitcom.

My money is the engine ECU temp sensor and purge valve plugs have been swapped. Default is to flood the car as if it's -40°c cold start. It might start once but it won't run again until the sensor is replaced.

If he carries on down the road he's on, the car will never run again.

[kaisergaragerpt]

Actually, its not clear, are you seeing a P0335 code?

I see that code, since the engine isn't starting. But I can see rpm in live data and yesterday when I disconected MAF and IAC and the engine runned  I had rpm on the dashboard.


I'm excluding that code since is like the egg and the chicken thing

[kaisergaragerpt]

Actually, its not clear, are you seeing a P0335 code?

There's two threads essentially referencing the same light on two different cars from two posters.

This one had some top end work done, oil cooler related. Soon after started running poorly and now won't start.

OP thinks it's an immobiliser issue but has been digging around with oppityfukitcom.

My money is the engine ECU temp sensor and purge valve plugs have been swapped. Default is to flood the car as if it's -40°c cold start. It might start once but it won't run again until the sensor is replaced.

If he carries on down the road he's on, the car will never run again.

I did not even disconected the sensors. The only one that wasn't on was the blade from the dasboard. is on now



(not my photo)

[TheBoy]

Actually, its not clear, are you seeing a P0335 code?

I see that code, since the engine isn't starting. But I can see rpm in live data and yesterday when I disconected MAF and IAC and the engine runned  I had rpm on the dashboard.


I'm excluding that code since is like the egg and the chicken thing

If you are seeing a P0335 then the crank sensor is faulty (or it's associated loom, or the reluctor).  That is irrespective of whether or not the engine is running.

P0335 (and 19 on earlier cars) means the engine ECU isn't seeing the right signal from the crank sensor.  This is different to a 31 on earlier cars which means the ECU is not seeing an RPM signal at all.

[TheBoy]

There's two threads essentially referencing the same light on two different cars from two posters.

Yup, realised that after I asked trims Q here , although trims is still valid on this one anyway.  But the P0335 needs sorting first.

OP should be OK to use O P C O M to read codes and live data readings.  That tool only becomes unsafe when programming (particularly the hooky copies)

[kaisergaragerpt]

Just to rule out ECT fail I measured 5v on loom and 2,5 k ohm respective to cold on the sensor.


Regarding the crank sensor, it is the 2nd in 3 months I even open a thread here because of it.
But when I saw the code, took the sensor out measured the resistance looked ok also voltage ok, cleaned with contact cleaner and put it back. Live data shown more than 350 rpm on cranking and when the engine is running it shows rpm on dashboard. Also that fault code is not always on only appears with failed cranks

[TheBoy]

I'll say it one last time.

A P0335 is not normal. Ever.  Its a clear indication that the ECU is detecting abnormalities with the signal from the crank sensor.

[kaisergaragerpt]

*UPDATE*

Finally bought a good expensive diagnostic tool. Read some live data while cranking a few times:

- immo transmits and ecu recieves
- MAF ok with readings
- 208 rpm max
- fuel pump active 0v (key on state is inactive 12v)

but I notice smthg I negleted before, 17.5ms pulses injection key on ->36ms cranking. the car instantly smels of fuel.

due to this scenario one can exclude the immo since is not cutting fuel



so what could it be? faulty Fuel Pressure Regulator? Injectors?


This car is driving me

[kaisergaragerpt]

I'll say it one last time.

A P0335 is not normal. Ever.  Its a clear indication that the ECU is detecting abnormalities with the signal from the crank sensor.

Yes! you might be right! I remembered last year I instaled a wrong bosh sensor and posted the data here , notice the injection pulse on that baby! this sensor now might be broken I gona buy a new more expensive one 0.55ohm

Thanks man 

 

VAUX-COM 120309a - PC based diagnostic tool

Date and time>,26/07/2025. 21:3043

Workshop information:

Please add your workshop
name in the settings window


Selected model>,1998 (W),Omega-B,Engine,X 25 XE

Control Unit:

KW82 protocol initialized.

ECU ID= HH,90492382,0261203588,1267358989,03,


Measuring blocks information:

Identifier,0D
Battery Voltage,13.0 V
Immobiliser Signal,Received
Immobiliser,Active
TPS Signal (Throttle Position Sensor),0.57 V
Simulated Idle Position,Active
Simulated Full Load Switch,Inactive
Mass Air Flow Sensor,0.00 V
Mass Air Flow Sensor,0 kg/h
Coolant Temperature,3.27 V
Coolant Temperature,26 °C
Intake Air Temperature,3.14 V
Intake Air Temperature,29 °C
Engine Type,4 Cylinder
Transmission Coding,Manual Transmission
Park/Neutral Switch,P - N  0V
A/C Information Switch (Air Conditioning),Inactive 0V
A/C Compressor Switch (Air Conditioning),Inactive 0V
Telltale (Check Light),On  0V
Fuel Pump Relay,Inactive 12V
Spark Angle before TDC (Top Dead Centre),0 °CA
Ignition Coil Cyl. 1+4 (Cylinder),Load
Ignition Coil Cyl. 2+5,Load
Ignition Coil Cyl. 3+6 (Cylinder),Load
Knock Signal,Inactive
Knock Retard,0 °CA
Secondary Air Pump Relay,Active 0V
EGR Valve (Exhaust-Gas Recirculation),Inactive
EGR Position Feedback (Exhaust Gas Recirculation),0.00 V
Fuel Tank Ventilation Valve,0 %
O2 Sensor 1,1205 mV
O2 Sensor 2,1244 mV
O2 Sensor Loop 1,Open
O2 Sensor Loop 2,Open
Air/Fuel Ratio 1,Lean
Air/Fuel Ratio 2,Lean
O2-Loop 1 Integrator,255 Steps
O2-Loop 2 Integrator,255
O2-Loop 1 BLM Idle (Block Learn Map),255 Steps
O2-Loop 2 BLM Idle (Block Learn Map),255 Steps
O2-Loop 1 BLM Partial Load (Block Learn Map),0 Steps
O2-Loop 2 BLM Partial Load(Block Learn Map),0 Steps
Hall Sensor,Inactive
Engine Speed Pulse,Inactive
Engine Speed,0 RPM
Idle Air Control,0 Steps
IAC Integrator (Idle Air Control),8 Steps
IAC Adaptation Slope (Idle Air Control),255 Steps
IAC Block Learn (Idle Air Control),8 Steps
Desired Idle Air,0 kg/h
Actual Value Idle Air,0 kg/h
Desired Engine Idle Speed,2470 RPM
Injection Pulse,95.2 ms
Engine Load Signal,0.0 ms
TPS Load Signal (Throttle Position Sensor),0 %
Vehicle Speed Pulse,Not Received 12V
Vehicle Speed,0 km/h
Intake Manifold Valve 1,Inactive 12V
Intake Manifold Valve 2,Inactive 12V
Torque Control,Inactive
A/C Cutoff Relay (Air Conditioning),Inactive 12V
Diagnostic Request,Inactive 5V

[kaisergaragerpt]

Hello all. Just for some closure. It was a hole in the hose that connect the pump inside the tank. One day I was testing relay and rail pressure and I heard a sound like a water fountain. The pump was pumping directly into the tank again. Mystery solved.

[YZ250]

Nice one, your persistence paid off in the end then.    The same thing happened to somebody else in another thread so they must be at that age where the pipes are perishing.