Epc warning light on

[Mattsush]

Hi guys,

i have a polo 6r 77tsi and last weekend on my way home the car started shaking and went into 'limp mode' with epc, engine and esp lit on the dash... Lucky I wasn't far from home so I limped it into the garage.. Vw assist came and said it needs towing. So next mourning got it towed to barloworld mascot (sydney) and found my ignition lead on cylinder 1 was the problem hence the car feeling like it was running on 3 cylinders.Lucky it's under warranty and didn't cost anything.

wondering if this is a common fault? Has anyone else had this problem?

matt.

[vdubmotorworx]

Seen it a few times now......

[Snail Style]

Usually cylinder 3's spark lead is the cause of the fault. New ones come with conduit around them to rectify the issue.

[POW]

I had misfire on cylinder 1.spark plug replaced under warranty.mine is gti and happen when 6000km from new

[Umai Naa!!]

Different setup on the GTI.

[MC3386]

Had the same problem last night on my 77TSI. Ignition lead was the culprit.

[Mattsush]

Really yeah my car runs out of warranty at the end of the year so I was lucky I didn't have to pay in a sense..

[Mattsush]

Usually cylinder 3's spark lead is the cause of the fault. New ones come with conduit around them to rectify the issue.

Ah ok well that would make sense..

[JexL]

I also just had all the lights come on yesterday. CEL EPC ESP and Tire pressure. Car sounded different and would idle very rough. Had car for almost four years how any idea how much this would cost? Should I just go to a European car specialist like BLA or VW Village instead of the dealers?

[nomadx38]

Look in the end it would probably be better to get a VAGCOM and check it yourself as VW charge an average of 150+ p/h for diagnostic work.

Don't be too concerned about all the lights on the dash - this is caused becuase all the systems are linked. The engine has a fault which will automatically disable the ESP and braking module (which also controles the TPMS). chances are its a very small thing like a coil pack or ignition lead.

[POLOSYDNEY]

I also just had all the lights come on yesterday. CEL EPC ESP and Tire pressure. Car sounded different and would idle very rough. Had car for almost four years how any idea how much this would cost? Should I just go to a European car specialist like BLA or VW Village instead of the dealers?

Hi JexL,

These symptoms sound very similar to what I am experiencing. Did you end up finding the cause of the problem?

Thanks

[steveyoshi]

Hi all... I would be interested in finding out a bit more about all of this.

Had a flash or 6 from the EPC light for the last week or so... and every so often a rough idle... normally stationary only and in gear, foot on brake... would clear itself back in neutral or as I pulled away.

That is now becoming a miss from 1500 to 3000rpm.

Seems to feel like a coil or a plug.

Now... this morning... not a cold day.

1min from a cold start... flasging red temp light... got coolant !

Stop... restart... all gone.

Then... 5 mins later... terrible miss and flashing epc light... hard to drive at all.

Pull over... neutral... miss appears better. Stop engine... restart and then all clear again.

Get to work... check coolant again... the same... all good... a little low but looks good... no oil either.

4 hours later... restart car... run for a few minutes... no lights .. no rough idle or miss... just at idle or at 2500rpm... whilst in P though.

Any thoughts... could a coil do all this ?
Melted plug ?
Hole in piston - surely not ??
Head Gasket gone or cracked head - surely not ??

Polo 13
Stage 2
IC, Exh, and Filter.
68k

[Umai Naa!!]

You need to scan it and go from there.

The reason it comes good again after you restart it is becauce the ECU cuts fuel and spark to a cylinder where the missfire is detected, until it detects it again, which is usually under load whilst driving.

Once you know which cylinder, or cylinders it's logging missfire faults on, you'll be able to narrow it down.

[steveyoshi]

Makes perfect sense... thanks.

Hope to scan soon... seems fine again when I tried it at the end of lunch.

[Umai Naa!!]

It'll still have the codes stored in the ECU.