Help no power

[betterwith4]

i live in leeds my dad owns car mot garage and my cars stuck in Catterick -.- im going to leeds thursday after checking the ignition and im gunna bring the scanner and volt metre back and do a last couple checks and if nowt comes up im gunna see about an electrician and post results because plainly were all going in circles and no one has had this problem (yet) or at least not in the way its happened to me haha cheers guys ill post results in couple week once i manage to sort out some money and fix it (got a kid on the way amd money is low at the moment) new addition to the s2 family

[quattro-nick]

I normally do all my own work, but why not just get an Auto Electrician to look at it?

I recently had a problem with my car and spent a couple of days checking everything and thought that it was the alarm that had gone faulty. This guy came out, did a few checks, snipped a few wires, made a few circuits then ripped the CAT1 Thatcham approved alarm out.

Within a couple of minutes the car was started and it's the best £30 I've ever spent.

[betterwith4]

Update its fuse 12!! No power going through it if i put power prob on it and put a positive through it then my car fires up no problem ... take the probe off fuse 12 cuts out no ignition what could this be guys so close to sorting it lol

[betterwith4]

The solderd on wire goes to pin 862 on the back of the ignition relay/switch dont have a clue what pin 862 is for the wore went towards the clifford alarm system box so i thought it was a power lead but looked at all the wires and there all connected? Any ideas?

[betterwith4]

i put a power probe to number 12 fuse and put a live through and as we speak my s2 is running but if i diconnect the live going through it then it cuts out no ingnition ... on the back on the ignition fuse/ relay one of the pins numbered 862 has a random wire soldered onto it and went behind my dash had a look cant see whats ment to be connected to it all i know is that it goes love soon as i put my key into the barrel and push it as of im about to turn ignition on can you help?

[UrS4boy]

That photo of the back of your ignitions switch indicates that some monkeylad/gumby brain surgeon has been in there fitting some form of immobilizer or the like.

As per the list of items that Fuse S12 serves, the only one that *I* think has a remote potential to affect the engine is the "multiple sensor" (the Multifunction temperature switch (MFTS). More info HERE (F76 MFTS info)



S12 (keep scrolling to see where "a" goes)



Ooo..there's "a", going to the F76 MFTS and the F4 reversing lamps M16 and M17

[newsh]

I think 862 looks like the thin red wire which powers your radio when the key is in the ignition. Nothing to do with your problem.

[newsh]

Help no power

I suspect putting power to fuse 12 is back feeding the ignition circuit.

Those black sleeves on the black wires on the back of the ignition switch don't look stock, is that cloth tape or plastic round the loom?

If so I would I tape that part of the loom and find out where the ignition wire has been cut and spliced into.

[betterwith4]

That mfts ... if thats crumbling due to heat as i was reading will that cut my ignition and not let me start my engine? Im still getting temperature readings on my gauges?

[UrS4boy]

I think 862 looks like the thin red wire which powers your radio when the key is in the ignition. Nothing to do with your problem.

Maybe. But is not 862, it is 86S and the thin red wire goes to the mini-check according to Audi 80 diagrams at S2Central.net, one of which I have annotated as below. I think some(idiot) has tapped into it as a switched power (it is) where they could have got much better power from wherever the thicker red wires from "15" and "50" on the switch go to (a bus bar under the dash, I suspect).

[newsh]

Dave
That's the wire we all use to switch the radio because it stays on when you switch the engine off but leave the key in.

[newsh]

That mfts ... if thats crumbling due to heat as i was reading will that cut my ignition and not let me start my engine? Im still getting temperature readings on my gauges?

No, the MFTS does not affect ignition

[UrS4boy]

Dave: That's the wire we all use to switch the radio because it stays on when you switch the engine off but leave the key in.

Okay. I was just going on what Audi says about the 86S switch output.

[newsh]

I suspect putting power to fuse 12 is back feeding the ignition circuit.

Those black sleeves on the black wires on the back of the ignition switch don't look stock, is that cloth tape or plastic round the loom?

If so I would un-wrap that part of the loom and find out where the ignition wire has been cut and spliced into.

Did you read this?

[betterwith4]

Yh i took first bot of tape just a random wire badly soldered onto it nothomg more everything's all connected just need to know what enables power to flow through fuse 12 (without the j15 to s20 and all that milarky im not familiar with that stuff yet so if you want to state that stuff can you also give me the basic simple dumb terms hahaha)