My Amigo will crank and fun perfect until it warms. Then it will begin to run rich and die. My mechanic believes it’s the mass air flow sensor/ pigtail.
’89 with a 2.6L 5 speed

anyone else have similar issues before?

Parts recently replaced:
distributor
cap/rotor
plugs/wires
coil
fuel fliter
fuel tank dropped, lines blown
idle air sensor