No resistance on my brake peadle for my 2002 ford taraus

Not alot of actual tests but first is the hose that goes to it connected and does it have strong vacuum when vehicle is running? Next get under dash by pedals push brake pedal, can you hear air leaking? Tests are inconclusive probably needs booster either way.

bad CV joints make a poping sound.

all you do is adjust the brake adjuster while turning the drum until you begin to feel resistance of the drum turning. do not over adjust until you have to use too much effort to turn the drum. make sure both drums have similar resistance.

You need to call your local ford dealership and have them run your vin. There are 3 different transmissions for this vehicle. Ax4n-ax4s-4f50n..then call the parts department and they can tell you....

Start at the right rear wheel, while having someone in the driver seat, have them to apply pressure to brake peadle while you open the bleeder valve located at the top of the caliper. After fluid stops coming out of the bleeder valve close valve, and person in the driver seat can release pressure off of brake peadle. perform this till all air is out at each caliper. Right rear first, then left rear, right front, and then left front, be sure to check brake fluid level after each caliper is bleed.

Check the Ford website for recall information. There are hundreds of identical postings for that year and model. Good Luck!

Your description sounds like you either have a leak or a damaged master cylinder. If you determine the m/c, BENCH bleed it before installing. Auto parts stores sell an inexpensive kit to assist in m/c bleeding.
My bet is failed master cylinder.

Remove the cover from under the dash and look up above the brake peadle about 5 inches you should be able to see the switch there may be 2 switches if you have cruse contronl. The brake light switch should have white and orange wires. just pull back on the switch to remove it. When putting the new one in push the brake peadle in then push the switch all the way in the hole then pull the brake peadle back till it stops this will push the switch back out some this will adjust the switch. Of course ckeck for proper operation. Here is a bad diagram of the switches but it the only one I could find.

Sounds like there is air in the brake lines. did you bleed the fluid until it came out clear? Not foamy color.

may need to surface rotors if severe vibration