UK-POLOS.NET - THE VW Polo Forum

Can anyone tell me what the red/black wire is? Also, any idea what the blue/black wore is? While changing the post-cat O2 sensor I noticed a bit of insulation tape hanging. I thought I'd tidy it up while I'm there, but discovered the tape was covering up these two wires that someone (a previous owne...

I've a theory (based on the £1K I've thrown at trying to find the problem with a similar misfire - see my "THE common problem" post) but perhaps the fact that griffdmn's Polo was misfiring at 4500 rpm is typical of misfire caused by the "common valve guide" issue. That is to say,...

So, I have a late 2005 (facelift) Polo with a 1.2 BMD engine with 120k miles on the clock. It seemed to run well, unless you drive for 20 mins or more, at which point the dreaded dash light comes on and the engine goes into limp mode. Local mechanic connected his laptop and said its misfiring in cyl...