no fire

if the pickup coil in a 91 astro is bad will that keep it from getting fire? i checked ignition control module, it is good, i get a weak yellow spark on a plug wire i need heip

have you replaced your ignition Coil? Check for bad ignition wires

i'm getting mine replaced as i am getting a sweet firy red rebuild engine V6 4.5L "rebored" for my propane baby Chevy. =D
my pick up coil was never replaced and still original from 87 and still going, but i have to replace it now as rust is starting to kill it.

Aqua Angle is right on tract there.
Pickup coil usually kill spark all together.
Just one or all plug wire to plugs.
Also have a look at wires and cap and rotor. Wires corrode at cap and coil to.
MT