The Fiero has two flashers from the factory, the signal light flasher and the emergency or four way flasher. These are identical GM style two prong flashers. There are many quality levels and even a few novelty flashers available.
It's a round "normal flasher" type unit under the passengers dash
1) a signal flasher and a 2) 4-way signal flasher
No they are 2 separate things.
Defective Flasher Relay
The turn signal flasher is integrated with the 4 way flasher switch located on the dash.
It's located to the left of the steering column just behind the bottom cover mounted in a bracket.
Can you explain this a little more, please? The 4-way flasher? thanks
"The turn signal flasher is located on the left steering column bracket under the instrument panel, next to the main fuse panel."
It is quite simple to replace the four-way flasher relay switch in your 1986 Chevrolet Astro Van. The four-way flasher relay switch simply plugs in and out.
this is the 4 way flasher switch...
The 4 way flasher is usually installed in the fuse box and the turn signal flasher is mounted next to the steering column on the right side. Most late 80s and 90s GM vehicles are this way. However, I am not 100% certain on your car.