Date registered: Oct 2009
Vehicle: 2000 VW Golf Variant
Location: Leiden, Netherlands
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
The twist knob is there to increase idle speed on a cold engine. It works as follows:
- Before starting, push accelerator pedal halfway, turn knob fully to the left.
- Release pedal, start as usual (no accelerator pedal needed, unless it is freezing)
- Turn the knob back with the increasing temperature. Knob should be fully turned back when the temperature reaches the first stripe.
The knob actuates a cable which pulls on the gas linkage. It is the same as pushing on the accelerator pedal a bit. It injects more diesel, to compensate for diesel condensating on cold engine parts. It can make driving with a cold engine slightly more comfortable, mostly when you release the accelerator pedal suddenly.
You don't have to use it of course, some cars work perfectly without using it.
On the instrument cluster there are two other twist knobs: one for the reset of the day counter and the other is the instrument light dimmer.
There are four air system slides:
- two heat slides for both sides of the car: outwards is hot air
- one slide for air to the windscreen/defrost
- one slide for air to the feet area. Outwards for air, inwards for no air.
There is a handle too for the cold air from the centre outlet.