Vauxhall Vectra stalling at low revs

I own a Vauxhall Vectra C 1.9 diesel. It has a manual gearbox and a DMF. The problem I have is when the clutch is not engaged. The car runs smoothly and then stalls, with a clicking noise. This happens after starting or when stopped at lights. When I engage the clutch - the engine runs smoothly.

Just to clarify I have no other issues with the clutch. Good bite and no slip when accelerating hard. If I change the idle rpm from 800 to 1000 the stalling doesn't occur.

Asked on 1 November 2016 by sj

Answered by Honest John
DMFs don't like being engaged at engine idle speed. They like a few revs more, even if it's just 1000rpm. Was a massive problem in London about 15 years ago when London cabbies found out the hard way.
Similar questions
I have a repetitive problem with my 2002 Ford Mondeo 2.0 TDCi - the car stalls in cold weather It only happens for the first few hundred metres and only when I stop accelerating and it drops to idle...
I have a 2002 Ford Focus 1.8 TDCI 115PS. When started especially first start of the day it will start but then cut out immediately unless you rev it and then it will be fine. It also intermittently will...
I would like to ask for advice concerning a drivetrain issue I've been having with a BMW F10 520d manual. The car was purchased as an approved used from a BMW dealer with a two year warranty with 35k miles...
Related models
Far better than previous Vectra. Now with decent handling and an excellent ride. Plenty of safety kit. Roomy in the front. Big boot. Good looks.

Ask Honest John

Value my car