Technical '06 Panda crank sensor issue.....

[koalar]

Right at the begin of the video there appears to be something stuck between two teeth?

 

[RDM1]

No it's perfectly clean i even spun the pulley by hand at first to double check if there was anything wrong but nope it's just the background you probably felt it as something

 

[A3jeroen]

Is it a pulley with a rubber inner? Over time they can crack.
Sensor needs to be as close as the thickness of a creditcard.

gr J

 

[RDM1]

No it's steel on steel timing belt from behind no rubber in between them and fixed by 3 13 mm bolts

 

[RDM1]

So I'm pretty sure there's no way that the pulley is misbalanced

 

[koalar]

What happened here

The movement on the outer edge of the pulley doesn't seem to match the engine mount movement of the Crank sensors to me

This is slowed down slightly

 

[RDM1]

Ok so the what happened here is that the Plastic cover was apparently loose and hit the pulley back from the previous owner days and as for the pulley I'll try removing it and fitting it again does that sound ok?

 

[RDM1]

If it's really the pulley's fault i wonder what caused that, it was always driving on asphalt and no severe driving unless something happened to it over time

 

[RDM1]

Hi there it seems to be wobbling but today it's raining I'll wait for tomorrow will remove the belt and pulley then install them again and see if there's any better results meanwhile do you have anymore suggestions?

 

[koalar]

Look at the auxiliary tension pulley just to the left

If the alternator bearings are stiff it will be wobbling up and down as it's spring loaded

As per @A3jeroen the pulley is in two pieces, with rubber in between, they rarely fail on the Panda

It's a bit of coincidence you have a crankshaft sensor error, the wires to the sensor have been damaged, the timing cover has been left without it bolts fitted rubbing on the crankshaft pulley.

It's pretty hard to leave these bolts out

The timing part of the pulley is fixed solid to the Crank, the drive to the alternator is dampened

 

[RDM1]

Well it's rainy today I can't work on the car but the thing is i did my timing belt twice and there was no rubber part in between the timing belt and driving belt pulleys now it's possible that they were removed but the car was running fine even after doing the timing belt twice

 

[RDM1]

I think I'll try your idea by removing the drive belt and try if it works

 

[koalar]

You will have to clear the code

Then switch the ignition off for 20 seconds

Once the code is logged it's going to cut the ignition

 

[RDM1]

Alright so good morning everyone these are the belt i have on my car, the pulley how it is fixed and a video how it's behaving after taking out the belt and I don't see any wobbling

 

[RDM1]

And tried running the diagnosis system git no codes anywhere except the serial line with incorrect code on the BCM no p0335 on the ECU, sent a clear command on all modules closed the ignition for 30 seconds and still no start

 

[RDM1]

By the way i noticed that when opening the ignition the battery light is instantly on and the oil light comes on half a second after

 

[RDM1]

Alright one more update: i had a friend who is a mechanic and have a more advanced scan tool, we were talking about my car so he offered diagnosing it i said why not. So he went and hooked up and ran all the tests he wanted and as i suspected it was clear of faults except the serial line with incorrect code DTC so he cleared it and cranked the car but to no avail then i told him what happened so far so he said that we need to relearn the key and ECU to each other so he went ahead and reprogrammed the ECU to my key in case there was a software corruption but to no avail so he deemed my BCM faulty.
What do you think about that?

 

[koalar]

By the way i noticed that when opening the ignition the battery light is instantly on and the oil light comes on half a second after

Should be like this

The oil pressure switch is just a reference to ground

If there is a delay the engine or ECU isn't grounded correctly and the delay is as they initial current surge from everything powering on finally stabilising

It no good measuring while the light is on, the important measurements are in the 1/2 second it's off

Very unlikely to be the BCM

Once running the BCM does nothing to the running of the engine and yours stops

 

[RDM1]

But isn't it a possibility that the BCM is cutting the ECU order to start?

 

[koalar]

But isn't it a possibility that the BCM is cutting the ECU order to start?

BCM will not cut the engine once it's running even if the key signal is lost, safety feature