check engine light???

No....86-88 speed density Mustangs do not have a CE light.

You pull codes the same way as any other Mustangs, you just don't have a visual light to check. You can hook up a test light instead.

http://www.corral.net/tech/maintenance/eecivtest.html

test.gif


Instead of the volt meter, you can substitute a 12V light bulb. It will blink the codes to you.