lumpy running at low revs

Asked by Jun 02, 2017 at 10:32 AM about the 2008 Vauxhall Vectra 1.9TD Elite Estate

Question type: Maintenance & Repair

Starts easy but when cold is very slow to pull away until revs build up.  Main problem is when you are doing 50 -60 mp and revs are less than 1600 revs it's lumpy and you feel a lot of vibration.  If you increase revs to 2000 it stops.  I have replaced er valve. Small improvement.  Can you suggest anything Ian

1 Answer

1,460

I'm afraid this could be any number of problems Ian. Is the er valve you replaced the EGR (Exhaust Gas Recirculation Valve) as these are known to be a bit problematic on these engines? It could be a MAF sensor or possibly some blockage in the exhaust (catalyst/or DPF if fitted) but think this unlikely as it will rev higher than 1600 and is fine at 2000rpm. I'm wondering if it's some sort of timing issue, but if I were you I'd get the fault codes read to see if that will point you in the right direction. Good luck.

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