Thread: Rough Cold Startup

Hey All

Quick question for you. I have an 04 CompG with 102,000 on the clock. Everything has been just fine lately. My quick question is:

I live in Upper Michigan and we've been getting snow dumped on us and the temperature hasn't reached 26 in the last three days. The other morning I went out and started my car with the key it was about 18 degrees out and it started up like a diesel. It fired, but it rattled a bit and it seemed as though the supercharger was having difficulty getting moving... but it was fine after it had a couple revolutions or such. It idle perfectly and no codes or anything. It was very weird. Is this normal on the supercharged 3800 engine when its really cold outside? This is my first supercharged car so I'm all about learning every little thing about my car. =)

P.S. It is currently 10 degree's in Marquette, Michigan.... UGH

Any insight would be greatly appreciated. Thanks

When did you last change your plugs and wires?

my car did this last winter.

was as cold as - 4 when i tried to start it and it did that but still ran with an 8 year old battery.

Plugs were changed in June right after I bought the car. They said my wires were still in good shape. They put NGK TR55's in her. I guess that was what was in it before I purchased the car. The battery is still the original and its an 2004..perhaps I should really consider replacing the battery...?

Is it a ***** to get the throttle body screen off without ruining it or is it a pretty easy job?

Here is an excellent write up for the 2004 Throttle Body Cleaning. I really should attempt to do this. How much would a garage charge to do this. Its only 16 degrees here and I don't have a heated garage. I should probably get my battery tested to. It very well may need changing. being 6 years old. How long do the AcDelco original battery's last or recommended to last?

Here is the link from GPONA Forum- Grand Prixs Of North America • View topic - clean your MAF & Throttle Body

Well I stopped at Advanced Auto Parts and they checked my battery. It was time to change. Cold Crank voltage was 400 something...he said it should be in the 600-800 range. He took the battery out and it was fat. He said it was pregnant. So we will see when I start it in the cold tonight after work if she turns over better.

I still know I need to clean the TB and MAF. =)