First make sure all spark plugs are in good shape; check the IDLE CONTROL VALVE maybe need to be clean or better yet replace.
Yes!
under the dash
Something...
usually on the driver side door
On a 98 Pontiac Sunfire, the red color of wire goes on the terminal marked "B" on the starter. This terminal is located close to the battery of the vehicle.
the 98 sunfire haz a 57.2 litre gas tank
150psi
I have a 98 sunfire with the 2.4L and it is getting about 35m/gal on the hwy.
head gasket is gone
This should help you out; http://consumerguideauto.howstuffworks.com/1995-to-2005-pontiac-sunfire-6.htm FriPilot
Have a look at this web site; http://consumerguideauto.howstuffworks.com/1995-to-2005-pontiac-sunfire-6.htm FriPilot
if you're going through the trouble of dropping the fuel tank, I'd just put a new one in and be done with it