I have a 2005 gxp with 60k of miles. For the winter I have only been driving it when it is sunny out and the roads are dry. The problem seemed to start when the temp changed, like 3 months ago. Every once in a while I have to try to turn it over 2 or 3 times to get it to start. Once it starts it runs rough for a few seconds then it seems ok after that. It might happen once or twice or week. First I thought it was because the gas was old from sitting in the car, it was about 3 weeks old ( which really isn't that old to me). But since then I have filled up twice and it just happened again today. It doesn't bother me too much until the day that I won't be able to start it.

Any ideas what it could be? Only mods are a CAI and custom cat back exhaust.

 

is it cranking over slow like a week battery?

 

Check the battery terminals to make sure they're not all corroded. These cars really seem to gunk easily there, so it's the first thing I would look at.

 

No it sounds like a normal crank. I did check the terminals, and there was a little bit of corrosion on them. Im going to get it cleaned off and see if that helps.
Thanks

 

Are you on the original spark plugs?

 

yeah im on the original plugs. I wanted to think about replacing them for a hope of some better mpg's and power.. is there a brand recommended?

 

How old is the gas?