Volkswagen Passat (2001 - 2005) - 01 1.9 Lumpy Engine

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Mon 3 Nov 2008 15:54
01 1.9 Lumpy Engine - Paddyboy
Hi folks

I have a Passat 130 TDI AWX. It had its 10000mile service about 5 wks ago.

However about 2 weeks after the service all of a sudden things have gone wrong. The engine is less smooth generally and when cold sitting at traffic lights there is a 'lump' every 3 seconds. The engine also sounds coarser or throatier and seems to be working harder to get up to speed. Fuel economy is worse and acceleration is less impressive. In second gear sometimes there is a really long turbo lag. The car is most problematic at low revs but mid range the car is operating as good as ever.
Please help
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Mon 3 Nov 2008 16:16
01 1.9 Lumpy Engine - Peter D
Code read time. This could be the N75 EGR valve or the MAF. Regards Peter
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Mon 3 Nov 2008 16:54
01 1.9 Lumpy Engine - craig-pd130
Could also be a coolant temp sensor issue -- as Peter says, see what fault codes pop up.
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