Cold Start issues with 2005 9-5
Hey guys,
every morning and in the evening I am getting following symptoms when I start the car for drive to work or drive to home.
1. Engine will fire up and idle at approx 1400rpm instead of usual idle speed of below 1000.
2. then it will slowly start dropping down to it's usual speed
3. if I put car in gear *before* it has dropped down to it's usual idle speed, it will stall
4. car will also vibrate ( almost feels like engine is trying to climb out of engine bay ) for approx 5 min while engine temp rises
5. during this, with car in Park, throttle position reads at between 23%-30%
6. once car is warmed up, if I arrive at a traffic light and apply brakes or put the car in park, throttle position reads under 20%
So far, I have changed spark plugs & I have cleaned throttle body wih carb cleaner. What else should I check / change? I do not get any misfire count. so I don't think this is DIC ( but I'm likely to be completly out to lunch on that ).
I have never seen any pending or recorded DTCs but then again I do not have tech2. so all readings were done with obdkey2.
I would welcome suggestions on diagostic strategies to follow, things to check etc. as I would really love to get this resolved before winter sets in :(
--Rajiv