What happens when you drive the car, right after you start it, oil gets all through the engine and lubricates the parts that it needs to. "When it sits there and it just idles, it's not getting ...
To get your car to warm up faster, drive at your normal speed without pushing the gas hard. This will also cut down wear, lower exhaust emissions and save gas.
My five-litre VR Holden Commodore has a big flat spot when cold and hunts on very light throttle. Parts replaced include the ignition module, coil, distributor, injectors, fuel pump, plugs, leads, and ...