17763 Cyl. 1, ignition circuit Open Circuit

[GarryGti]

Can anyone help!!

Just changed my plugs last week cuz they were misfireing then yesterday i was drivin home and it started to run on 3 cylinders so went and got 4 new coil packs and put them on now my engine warning light is on telling me these fault codes

17766 Cyl. 2, ignition circuit Open Circuit

17763 Cyl. 1, ignition circuit Open Circuit

I've read there is a ground problem some times but i've checked the earth point.

 

[MIkey kc]

You may have a broken wire then, but dout that, is it running ok then or rough still? with the new coil packs

 

[GarryGti]

Yeah its running ok on all 4 cylinders hav't driven it yet but let it warm up and its still ok

 

[MIkey kc]

id clear the fault codes down and go for a run, prob old fault codes from when you had the misfire

 

[GarryGti]

Cleared it and taken it for a run but they still come strait on! think i've read it may be one of the pins that earth it so may have to get that done.

But it drives ok all the time

I've looked on here and all over the web there are loads of threads with this problem but none really say anything about them getting solved just try vw coil packs.

 

[MIkey kc]

strange because if you have an open circuit thats means you have ether no live or earth so you would have a missfire surly

 

[GarryGti]

I'm thinking there may be a broken earth wire wich is still connected but only just which is going to be a right sh*t to find. I'm going to try some vw coils hopefully if i can change in the ones i've put on. as it seems a few people have done this and solved the problem. so i'l try that before i put in new earth leads.

it seems this is quite commen but with not many solutions!

 

[DPJ]

But you won't notice a very low number of misfires.

 

[MIkey kc]

But you won't notice a very low number of misfires.

spose so but if the ecu can tell that its missfiring then surly you can, because doesnt it only put the fault code on if its had so many missfires per minute

 

[GarryGti]

this is what happens clear the codes then disconect the battery then let it run for about a minute then up she comes the really lush engine light!

every time

 

[MIkey kc]

what coil packs did you replace it with? couldnt you put two of the old ones in cylinder 1,2 aand see if that fixs it

 

[GarryGti]

Yeah think that is what i will try tomorz i got the from camberly auto factors and i think they are soverign ones @ £25 each never heard of them but thought i'd give them ago. prob end up being a bad mistake.Lol

 

[MIkey kc]

lol prob will, coil packs are 25 each from seat

 

[Myki da Pyki]

Thats a dodgy coilpack mate. Had this code before as have a few others and its always been a coilpack at fault

 

[GarryGti]

Right i've just got some original manufacters coils now i'm getting it on every cylinder! open circuit what does it mean i've taken the battery out checked the earth checked all the connections. the car runs and drives fine just the engine warning light is on. Got it going into autobahh ann monday to get the neuspeed arbs put on so i'm going to get them to look at it if i can't solve the problem over the weekend. Just hope the 20mile drive wont balls the car up!!

 

[MIkey kc]

what spark plugs did you put in?

 

[GarryGti]

ngk platinum, would having the gap set wrong cause this fault??

 

[Reuvers]

sounds like the wrong coilpacks.

I described this yesterday in a different thread about coilpacks. That the car will run fine on them but the computer notices that they are not meant specifically for your car. The light will stay on until you get the proper ones.

I had this for about a month. Mine was due to tripple A supplying me one.

 

[GarryGti]

Who make Genuin seat ones? So is the car ok to drive?

 

[Reuvers]

yeah it is. I did for more than a month. Like said the coils do work without misfires. Except engine management notices that they are not the proper ones so leaves the light on. WHen you delete the code it just comes back as soon as you rev the car. It will dissapear as soon as you get the right coils in.

As for which ones, you need the ones with the partnumber listed in the mk3 parts list

by the way, this is what i think it is...as I had the same problem...but you'll know more as soon as you check what the part number is on the coils you have in now.