How do you star a 900 sabb turbo with starting fluid?

Convertable not so fun when the top doesnt operate? Haha.
there is such a thing as a trunk lid sensor. Although I dont know
where its located, its a good place to start.

have a place like checker or autozone check your battery for the proper AMP output

some cars have a little button near the shifter if yours has one hold it down while trying to change the gear amd try turning the key on as well

tyres thats normal thats how the dif works wheels go opposite ways. im thinking the linkage has snapped inside the gearbox. its a half circle that moves the cogs for the gears. if its locked in place then its slipped. it would need a replacement gearbox. part of it mus be broken off and in the cogs thats why its cutting the engine out it will act like a brake and just burn the clutch out if you keep doing it. replace the gear box, its lasted a long time from 1991 if its original, when fitting new gearbox replace the gearbox fluid. give the gear box a good flush out before fitting.

There is but one answer onthis, you have a worn out clutch.

drive slower and put some michelin tyres on it

Bad syncro for third gear. Sorry, but you aren't fixing this one yourself, unless you replace the transmission yourself.

Do you mean the alarm is activated and wont turn off?

What is the question, is it about fuel mileage?