coil packs on s4 V8

[Andy70]

how do you get that red housing off the leads that go into the coil packs with out breaking it? I have a misfire ad assume its the pencil coil, so was going to diagnose as to which one it was the old fashioned way by pulling a coil out one at a time and seeing if the tick over drops even more, however there seems to be a ridged housing which covers the wires that go into the coil pack, so cant pull out one lead individually. I really don't want to be paying a garage for this seemingly easy job I can do myself that I have always done on my cars over the years, not to mention being without a car for a day and bothering people for a lift to work :-( HELP PLEASE!!! :-)

[MattS3]

This should help
http://www.audizine.com/forum/showthread.php/25541...

[Andy70]

Umm not sure its what I'm looking for, like I said is it not possible to pull the leads off 1 at a time to diagnose the faulty one? this guy in the link was putting them in a microwave or 'smashing them with a hammer???' I just want to remove a coil at a time

[MattS3]

I'd hope you wouldn't go as far as smashing them with a hammer!
I just thought you'd watch and digest the part of how to remove them.

You can't pull them independently as such, you have to remove the cross bar which joins all four I guess, or just disconnect the plug which goes into the bar, if there is enough slack.

[MattS3]

I did attempt to remove this lot before to replace my own spark plugs, but gave up and got the garage to do it instead.
I was concerned the heat under the engine bay would have made the whole plastic clips brittle, so bottled out.

[Andy70]

I wonder if I could buy a cheap diagnostic device that would tell me which cylinder is failing then remove as those pics described? I really don't want to be beaten by this, I've never taken a car to a garage for something like this before, its an easy job :-)

[RobbyJ]

It is an easy job as I've done it a couple of times. As I've not had the car for a long time I can't remember the process but I think they just pull out once the "stuff" if off the top of the engine.

I bought a cheap fault scanner off eBay for about £30 which told me which coil had failed and I just popped a new one in. I used to keep a spare coil and the scanner in the boot just in case, which was a good plan as another failed and I had to replace it at the roadside.

My scanner is like this:

http://www.ebay.co.uk/itm/Konnwei-KW809-Car-Diagno...

[Andy70]

Brilliant and where does the scanner plug in? That's a great help

[RobbyJ]

Into the OBDII port which I think is in the drivers footwell.

You'll need this as well:



I kept a copy on my phone in case of mobile emergencies!

[Andy70]

thank you very much mate, that's brilliant, so how does the machine work, do you just plug it in, start the engine and it come up with a code you then have to translate from where exactly?

[MattS3]

You'll get a list of codes which come with the reader normally..
Simply plug the reader in, the socket will only accept the plug one way, switch on ignition and then you'll have a button to press on the reader (it'll all be in the instructions, very simple)

[Andy70]

brilliant guys, thanks very much, save on pointless garage bills and the hassle of being without a car, just have to wait for the device to arrive as its been ordered already, just have to nurse the car till then.

[pinseeker]

Are they the original coil packs? Audi had a recall and replaced them free of charge on my b6 a few years back. Might be worth checking!?

[Andy70]

Oh right, are they likely to be on an 8 car? No idea what they'd look like, there is no writing on them. It's a 2003 model

[Andy70]

Bloody phone, meant to say 86k car 😅

[pinseeker]

Mine was a 2003 s4 b6 and they replaced them all no quibbles. Whip it into your nearest dealer for a quick check ASAP! I couldn't believe my luck!

[pinseeker]

It was on 75k at the time!

http://www.audi-sport.net/xf/threads/free-replacem...

Edited by pinseeker on Sunday 18th October 19:10

[Andy70]

Yeah will do, cheers for that