el caro wont starto

start the car and let it idle for a couple secs, take off your red cable while car is running. if it continues to run, then your alternator is good, if it shuts off your alt. going bad or already gone.

i thought the 2.3s needed 120amp

Have the battery checked.

If the alt is working, have the batt tested.

If you have a DC voltmeter, check batt voltage with the car off. With a normally charged battery, you should have something like 12.5 or above. Then start the car, and with the engine running, check it and you should see a higher level, at least 12.9 to 13.9 or so. It should stay there with the lights, ac, etc on also. You must have good connections at both ends of the batt cables also. Especially the ground cable. I would guess that the batt has died also. I have gotten in the habit of just replacing batteries when the starter begins to sound slow when cranking. The Autozone folks always want to test, I tell them to test after I get my new battery and go home....

If that does not work, check for battery drains, glovebox light on, or similar.

Batteries can go south when they are not secure (lead plates shift and break) or get shorted (ie: hood makes contact on terminals). If you replace, make sure to get rubber terminal covers as added protection against accidental shorting.

i used to have that problem and got sick of messing with it so i went out and bought a 140 amp 1 wire alt and never had problems again...

Or you can source a 90 amp one from a XR4Ti. Bolt in goodness...