Volkswagen Golf V (2004 - 2008) - 05 1.4 Exhaust system light with rough running

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Fri 15 Jan 2010 18:41
05 1.4 Exhaust system light with rough running - mkv golf 1.4
Hi, as the title suggests I have a MkV Golf 1.4 FSi and the exhaust system warning light is lit (not flashing). I am under the impression that this could mean a lambda probe problem, however the engine is running quite rough at idle. Could anybody shed any light onto what could potentially be wrong? Currently not driving it untill I have the time to take it to mechanics,

Thanks
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Sat 16 Jan 2010 00:16
05 1.4 Exhaust system light with rough running - piston power
You need to get the codes read yes might be the sensor or the cat has failed etc.
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Wed 10 Feb 2010 21:56
05 1.4 Exhaust system light with rough running - VW-Claret
I'm having the same problem, only last month it was the abs light and traction control light and after sorting out that problem after 80 miles I have another one. The exhaust light is now on fully lit. I was traveling down the motorway and the light started flashing and had slight loss of power. After pulling off the motorway and pulling up to the lights the engine wanted to stall so I had to give more power ( It sounded like a tank! ). I manged to park and leave the car for 10 mins. On starting the car after 10 the light was out and the car seemed fine, I drove on for another 5 miles and the light came back on fully lit however the car drives ok. I have been to the local garage and its going in early next week on the computer so I will keep you posted. Can anyone advise what it could be? ( Just to confirm the exhaust itself is fine and just had a new piece ) Is this going to dear to fix??

Many thanks
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Tue 10 Aug 2010 19:28
05 1.4 Exhaust system light with rough running - rjb
Hi, as the title suggests I have a MkV Golf 1.4 FSi and the exhaust system warning light is lit (not flashing). I am under the impression that this could mean a lambda probe problem, however the engine is running quite rough at idle. Could anybody shed any light onto what could potentially be wrong? Currently not driving it untill I have the time to take it to mechanics, Thanks

egr valve needs a clean or replacing!!! check out yr local vw sc***py

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Tue 10 Aug 2010 23:43
05 1.4 Exhaust system light with rough running - Enginostics

Hi, we are fuel injection specialist based in the North West of England called Enginostics. I have just read the problem you are having. I would recommend someone to access the trouble codes and to read live data to determine the fault. This would be the first step.

I would also look for air / vacuum leaks.

If the trouble codes indicate a sensor, use a scope and make sure the sensor is failing before changing it and make sure that the sensor output is not incorrect due to its abnormal surroundings.

Good luck.

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