In my opinion you might need to have the valves adjusted. Or mabey it is a carburetor issue. Talk with a local mechanic they will have the right answer.
In hot weather my Honda Accord 2000 starts but idles rough and dies.
you have a cylinder misfire
check all the Fuses and fuse links (Altnator to Fuse box to battery)
The coil might be bad ,,like it was in mine
It could be a dirty air filter or a dirty throttle body.
Starts hard then it rough idles for a short time then smooths out but when you give it gas it miss fires and bucks and does not smooth out.
crankshaft sensor going.
More than likely... Tune up, or vacuum leak
the 96 fordwindstar sucks
If a car starts and idles but does not accelerate can be numerous problems such as a malfunctioning throttle position sensor, fuel regulator, Manifold Airflow sensor or vacuum leak. A diagnostics test will reveal what is malfunctioning and needs to be repaired.
you pooped in your pants!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Check the air filter, it's probably clogged.