98 amigo will turn over and then start but rough idle then will die

SOURCE: Engine will start and rough idle but dies when either the brakes are applied or the lights are turned on!

have you checked out your fuel filter? I had my 2003 denali do the same type of problem and it turned out to be a very dirty fuel filter.

SOURCE: 87 Supra idles rough and dies out

I would suspect a vacuum leak. At idle under high vacuum the air fuel mix is being leaned out until you have misfiring so bad the engine quits. The exhaust smells rich because even a lean mixture, if it doesn't light off, if full of unburned fuel. At road speeds, the vacuum is low so the engine doesn't care if there is a small leak somewhere. It is getting most of its air through the open throttle. Check all your vacuum lines but remember that even if every line is okay, it could still be leaking from an old cracked intake manifold gasket.

SOURCE: rough idle when start, or stop at trafic light,

a vacuum leak on the engine somewhere can cause this symptom

SOURCE: 2000 gmc starts but then idles rough then dies

I had to replace the mass air flow sensor. $ 150. the engine would shut off when driving too.changed fuel filter only worked for a day. The sensor is just after air filter.

SOURCE: 3 symptoms in random! one Car ! 2000 Impala 3800

First thing I'd check is fuel pressure. 55psi