Since it's right next to the brake fluid reservoir is it for the level sensor?

11 minutes ago, sepulchrave said:

Since it's right next to the brake fluid reservoir is it for the level sensor?

2 pin connector 

Purge valve?

14 minutes ago, sepulchrave said:

Purge valve?

Again should be a 2 pin 

Then it's the MAP or the cam position sensor unless it's the post cat lambda probe.

 

There really aren't that many things it can be, but lots it can't be apparently...

Edited 2 April, 20224 yr by sepulchrave

Crank sensor and connector for (dummy) vehicle speed sensor on differential are both 3-pin, I think, and on that leg of the engine loom.

Edited 2 April, 20224 yr by Pete_Ex-Wino

8 minutes ago, Pete_Ex-Wino said:

Crank sensor and connector for (dummy) vehicle speed sensor on differential are both 3-pin, I think, and on that leg of the engine loom.

 

They are at the gearbox end of the engine though, the only other 3 pin I could find was for the Cam Position but again wrong end of the engine 

Well party has just started... luckily removed the sensor with very small computer screwdriver  which was quite dirty with its age , was able to fix the new one but now previous two code vanished but new codes had come P0322 P0107 P0113 don't understand why these things happened not sure while testing with multimeter or without removing battery and fixing the sensor had messed up don't know...

 

End up in big time trouble ,  had app which cleared the code , the idling is VERy unstable  and I also don't see temp is moving though can see water coming out of exhaust but not serious carbon as it had yesterday ... 

Finding electric expert would be very hard any thoughts are just keep chaining sensors one by one please.  Just surprised my window motor started working possible due to new battery or something else do know, 

 

Experts any thoughts please ?? please find photo of attached MAP sensor 

 

Cheers 

42 minutes ago, raky said:

but new codes had come P0322 P0107 P0113

1st one of those is consistent with crank sensor having been unplugged, and MAP sensor unplugging will have generated the other 2.

 

Is there maybe a long captive lead on the BBZ crank sensor that means the plug/socket is up near the MAP sensor??

Aha! 

VEM Crankshaft Pulse Sensor V10-72-1270 FOR Polo Fabia I Golf Bora Lupo Octavia | eBay

Seems the G28 sensor does terminate in the dipstick area #2 in the picture 

Considering both of my Polos must have that arrangement, and I carry a spare crank sensor in the underseat box of my daily, I should've got there a bit sooner. 

Crank sensors never seem to give any trouble, in my defence.  

Edited 2 April, 20224 yr by Pete_Ex-Wino

Just now, Pete_Ex-Wino said:

Considering both of my Polos must have that arrangement, and I carry a spare crank sensor in the underseat box of my daily, I should've got there a bit sooner. 

Crank sensors never seem to give any trouble, in my defence.  

 

Unless they're disconnected 😄

I've only seen the sensor with no long lead and it's a bitch to remove 

Much appreciated  Pete for your time, yes i did disconnected 2 sensors 1. EGR (number 13)  and 1 was probably temperate sensor ( below MAP sensor ) 3 pins as shared earlier photo of it and tested the voltage of them .

Did I mess up please? Do u think ECU may have also effected or just these sensors any advice what sensors to change I don't think we have electrical expert in area where i live and don't feel that it is mechanical issue.

 

The pdf I am referring does not name these sensors properly as below MAP sensor there is 3 pin sensor.

 

Please advice next course of action I am brave enough now to change any sensor as mostly all are reachable except 1 ( 3pins in which is more difficult position below map sensor)

 

Grateful to you for your time. another weird thing happened my window motor started working , not sure it was due to bad battery or some connectivity issue. 

 

Do u expect me to remove both terminal of battery and let ECU  reset everything again back to its original setting as it is crazy just disconnection and connection again should not break the sensor. 

Kind Regards

raky 

 

 

 

 

Fuel injection AUA,AUB,BBY,BBZ,BKY.pdf

Edited 2 April, 20224 yr by raky

1 minute ago, nige8021 said:

I've only seen the sensor with no long lead and it's a bitch to remove 

Yes, the one on the 3-potter can be very hard going, especially once the alloy of the block has furred up nicely around it and 'glued' it in place.

Stop blaming sensors and stop unplugging them. 

Map sensor and intake air temperature sensor are in the same housing. In fact, the small bead that is just visible in your photos of the MAP sensor is actually the IAT sensor. This is why unplugging the 4-way connector from the MAP caused two new fault codes P0107 P0113.

The other P0322 came from unplugging the crank sensor, the 3-way connector.

 

See what's going on with your engine coolant first.

 

What area do you live in Raky?

 

"See what's going on with your engine coolant first."

 

Pete since today I did not rev( mechanic did yesterday)  the engine high but before starting I did open the coolant cap I still see the expectedly some ghost have added extra coolant in my box. 

 

Please advice do u think battery disconnecting would reset everything back to normal. how do we reset my mistake of connecting disconnecting of sensors which had caused this major issue  any thoughts please .

Do u feel it is technical issue or electrical issue ??

 

cheers 

Pete so Kind of your intention to help others , I have multimeter and basic knowledge only thing mistake I did I think I have not disconnected battery & did not test with proper grounding ( key was in) 

 

How serious it could be did it effected sensors or ECU please ? 

I shall reattempt to test voltage again one by with proper procedure if needed.

 

cheers 

Edited 2 April, 20224 yr by raky

What device are you using to read the fault codes? Use it to clear them. Any that return will relate to the real problem(s) - but maybe not directly.

Disconnecting the sensors should of caused no problem to them or the ECU just the ECU has noticed they were disconnected and logged the fault codes, so just delete them and re-scan 

 

Pete I have elm 327 and app ( blue tooth) , it had facility to check different graphs as well.  it reads code very nicely which matched with mechanic expensive machine . toady  I have cleared code  last when I left car there was no engine light but car idling  was bad I left started  for 2-3 minutes only will check tomorrow again  .

 

thanks 

 

Cheers 

Take the spark plugs out tomorrow  before running the engine and shine a torch down each of the holes, looking to see if any of the piston crowns look wet.

 

Thanks Nige&Pete for ur time please , I shall disconnect battery tomorrow morning and reconnect after good 5-6 hours and see if issue still persists, My past experience says that car generally picks up and new part info pretty quickly at least behaviours become normal immediately but engine light does go after 4-5 miles.  Any thoughts this all mess had made some kind internal issue of carbon clogging ( even though I was not driving just starting feb times day ) driven 5-10 miles with bad exhaust . 

 

Cheers