I found that one of my gearbox seals on my driveshaft is broken but I don't know how to replace it

My car can not climb even a curb on the side of the road on first gear it's first gear lacks the kick necessary to and by the time or before it catches up it jerks first as if I'm a first time driver, please help what could be the problem and the solution thereof

I suspected the alternator but I'm told that the alternator brushes are still in tact so what's wrong?

my car vw fox GY engine can travel well going 120km/h or even 140km/h but then sometimes it cuts out like there is not enough petrol it just start jerking whislt driving. i have checked fuel supply its fine, but it still sometimes does this. at times u can travell the whole day with no problem. please help me!

I thought it could be out of gas so I got some gas and then it started and died and wouldn't start again. The battery is fully charged, it turns over but will not start. I have replaced the spark plugs already. What should I look into next? maybe the fuel pump or filter? should I start with the fuel filter and then go to pump if that doesn't solve the problem. It is a 1989 but there was no selection for that year.

What is a rough estimate if only the the linkage needs repairing?

when i press on the brakes,the brake lights&park lights come on, but when release, both the tail&park lights goes off.