Hi, so I've had my 1995 Golf VR6 for about 3 months now and am largely pleased with it. Bought it quite cheap so don't mind having done the following on it so far:

Radiator (holed)
Thermostat, temp sense and sender (engine was running cold)
Ignition switch (wouldn't start consistently)
Plugs and Coil Pack (trying to solve stuttering issue)
No ECU falut codes reported since changing temp sensor/sender

So, more on this stuttering. Car runs great above 2000rpm, never any issues. Between 600 and 2000 though, if you try to accelerate, the engine will sometimes briefly stutter and then pick up again. Sometines it will do this several times very quickly (3 or four in a second or so) but always settles out. Hugely annoying to drive.

When changing the plugs to see if this would help (it did not), I noted that the old set were a little coked up and not the matt brown that my last VW produced. I'm confident that this is not to do with the engine running cold issue that I solved by changing the thermostat becuse I did this over 2 months back (and so would expect the deposits to have burned off by now if the engine was now running correctly).

Idle is smooth once warm and MPG is about 25 round town so not too low (I get 31MPG on the motorway which is a little lower than some report but I do tend to boot it where I can). When cold, the revs will wander a little at idle but only by 100rpm or so and only for the first minute or so that the engine is running. It hasn't used a drop of oil in the 3 months since I bought it and no sign of coolant leakage since I fixed the radiator

Does anyone have any thoughts at all about what might be causing the stuttering performance and/or running rich?

Cheers,

Ivan