Car runs rough when the engine is cold
It is very cold outside -8!
When I started the car and drove through the road, I can feel the car run rough. When I pressed the gas pedal, the car responses very slowly and I can also hear some noise(belt?).
The issue goes away when the engine is back to warm. So when the temperature gauge points to normal, the car runs smoothly and I don't hear any noise any more.
My car has recently been replaced the timing-cover so I assume all my pulley and tensioner are fine otherwise the shop will let me know already.
Also the serpentine belt was replaced in Ford dealership two years ago and since then I have run less than 20K.
Is this a problem? Should I always preheat my car before I start to drive it?
This is 2000 Taurus SE Vulcan with 140K miles.
Last edited by q0987; 01-22-2013 at 06:02 PM.