5/16 Flexible steel tubing.
Save yourself the time and go to either advanced auto parts or i hate to say it auto zone and get a Chilton manual. It's worth it!
Near the gas tank. It's an in-line filter.
On the rightside of the car. The low pressure line with the blue cap.
Refrigerant is added to a 1997 Pontiac Sunfire by removing the safety cap on the low pressure cooling line at the rear of the engine compartment. The charging line is then hooked up and refrigerant added until the pressure reaches specified levels.
I have one at 250+K....The previous owner had already replaced the head gasket, which is what normally goes on these, and I've been running it for close to 10K now.. A broken fuel line return and a leaking brake line are the only 2 repair probs that I've had . As long as they are maintained they should last a while :)
I know that on a '96 the fuel filter is an in-line type near the fuel tank. As Pontiac hasn't really altered much on the Sunfire in over ten years, I'd suggest starting there.
I guess you're referring to the wheel cylinder brake backing plate at the wheel. The one which operates the rods that move the brake shoes. It's usually pretty obvious. A couple of bolts to remove and a brake line to remove from the cylinder. Bear in mind that you'll have to fill and bleed the brake lines after replacing the cylinder.
Have you checked the power steering pressure line?
3/16 brake line
Usually right above and in line with the crankshaft pulley
Look under the vehicle along fram - follow the fuel line from the tank
heater core has a leak replace heater core