Ive tried looking online but nothing for either of them.

Is it me? Or have things just become more complicated. Im at a loss as what to try next.

Maybe consider buying one of these type of voltmeters, so you can keep an eye on voltages during drive cycles? Dual USB Car Charger - JEBSENS Car Voltage Meter Car Charger with Two USB Ports, 4.8A / 24W, LED Display Built-in Safety Protection Fast Charging Compatible with All Smartphones and Tablets: Amazon.co.uk: Car & Motorbike

 

I'm not recommending that specific one, there are plenty to choose from. Don't leave it plugged in 24/7 though, or it will itself flatten the battery.

Yes, it sounds like i need a better one. Another problem is the car has no mot so i cant drive it at the moment. Apparantly it wont pass if the engine light is on.

I have done as you have advised and tested the feeds to the ecu. The feeds are between 11.9 and 12.5. Except the feed to number 92. It reads around 5 volts ignition on and engine off. Is this correct?

10 minutes ago, unckleclockwise said:

Except the feed to number 92. It reads around 5 volts ignition on and engine off. Is this correct?

 

Odd. That comes from engine bay fuse 10, which is fed directly from battery positive. You checked that fuse, didn't you, including voltages on it? Maybe double check.

Ive double checked the readings and yes the fuse is ok. Would that explain my problem?.  Possibly a resistance in the wire? Could i bridge a fused wire to the wire on 92? From the live on fuse 10, to test it? 

Yep to all of that.

 

Hi wino. Thanks for all of your time and help today. I really appreciate it.

Ive given up for today. I did try a supply to 92 but no change.

I did have lots of codes from various other systems. 01314 and u111100, but i deleted them and they didnt come back. I presume that it was because i had removed the ecu to inspect it again.

So, still no further on with it. I havent looked at the bits under the dashboard yet, ill save that little gem for tomorrow (if the rain stays away).

Once again thanks for all your help. Ps. If you have a eureka moment during the night, i would appreciate any more ideas as to solving the mystery that is my Skoda.lol

You're welcome.

Wish we lived closer so I could have a look with you.

 

Unplugging the ECU and having ignition on with it unplugged will be the reason for the multiple fault codes, and you did the right thing in just deleting them.

 

Not sure if it's possible to see easily, but if it is, can you confirm that the wire going to pin 92 is the colour(s) I said on page 1?  Just wanting to be sure you were on the right pin of the loom connector when measuring.

Hi again Wino. Its a new day, so. I called in a local garage, they told me to bring it down and theyll put their diagnostcs on it.  I put it all back together and cleared the fault codes and the light stayed off. I drove it up and down the lane a few times turned it off and started it a few times and hey presto it came back on again. Off to the garage i went and they used some kind of scanner on it, i dont know wich one, but i presume it was better than mine.

It had 1 fault code on it U140A00. Terminal 30, open circuit.

I presume that means a broken curcuit possibly a bad connection or a broken wire?. I have checked all the fuses and they are fine. What are your thoughts on that? Also where is terminal 30 located.?

 

Terminal 30 is everything connected to battery positive. 

This fault code is consistent with the wire to pin 92 problem, I suspect.

Would that be a wire directly from the terminal or would it be via a relay.

Directly.

Can you have another look at the pin 92 situation, particularly with respect to the wire colour as it seems critical that you have checked the voltage on the correct wire at the ECU loom connector.

Theres a rain shower here at the moment wino, ill have a look and re- check. Can i check it with the plugs removed  from the ecu?  Would i have to turn on the ignition to do the test?

1 minute ago, unckleclockwise said:

Can i check it with the plugs removed  from the ecu? 

Yes

1 minute ago, unckleclockwise said:

Would i have to turn on the ignition to do the test?

No.

Seems to be alternating between lovely blue sky and peeing down here. Sounds like you may have the same.

Yes wino its the same here in wales.

Ok so re chcked the 92 and fuse 10. 12.6v at fuse 10 and 0.2v at 92. Black and red wire.

That seems to explain the problem. Any sign of corrosion at the loom connector contact?

 

Ill strip it all down again and try to trace the wires back. Ive checked any connectors ive seen, but i suspect theres more under the e box tray.

I tested it several times more with a new fuse and i cant seem to get any reading from it now. I also checked continuity from the fuse and theres no cicuit. Yes it looks like that explains it. Ill let you lnow the outcome.

Hi wino. Good news (and bad).

Firstly i found the red and black wire and it had corroded through. I stripped it back to good wire and replaced it. I then deleted any codes and the check engine light has stayed off. Yay.  Now the glow plug light is flashing. 🤯. Anyway it gets better.  After i went down to the garage today, my neighbour gave me a few quids worth diesel from a can in his garage as my car was very low on fuel. 🤗. Nise guy.

That, turned out to be petrol for his mower. So i then put about £40 worth of diesel in with the petrol after several trips (in my other car) with my jerry can. Assured by the local garage it would be ok..

Any how, the car runs as sweet as ever. So. My scanner throughs up the code p212200 throttle sensor/swtch B, circuit low imput.

Now. To embaraced to ask for your help again i looked online and see that may be linked to the O2 sensor. 

In my tiny mind im thinking that it could be because of the petrol in the diesel?.

So im here again humbling myself to you. Or am i again urinating into the wind?.

Ps. Have you ever thought of mooving to swansea😂😂🤯🤯?

I went to one of the best house parties in my life in Swansea, but haven't ever thought of moving there. 

I'll have a think and look at the circuits again tomorrow. 

Thanks wino👍

Hi again wino. Well its finaly stopped raining here in swansea and im out with tha skoda again.

Did you get chance to look at your wiring diagrams? Ive a feeling that after disturbing the wiring to repair the other fault, another wire may be corroded and snapped. Hence my new fault code and flashing glowplug light.

I did have a quick look but nothing leapt off the page that would explain your new faults.  

I think that your idea about other wires near to the 'work area' being damaged is the best one to pursue. 

4 minutes ago, Wino said:

I did have a quick look but nothing leapt off the page that would explain your new faults.  

I think that your idea about other wires near to the 'work area' being damaged is the best one to pursue. 

Ok. I have tried tracing the wires and have found 3 that have continuity between the pedal and the ecu, would hou have any idea that wires go connect to where ? Theres a white wire, grey and red, also a grey and blue  (i think) that dont appear to go to the ecu. Any idea where ghey go to so i can test them? Thanks.