Hi everyone I am new to having a fiero. It's my first project car and I am stumped. I have a hose on my 86 fiero gt that I don't know where it goes and I was hoping someone would know or have an idea of where it does go. It's a hose leading from under in the intake manifold. I noticed it when I was taking off the thermostat housing that it was just dangling there. Please let me know and thank you in advance

Looks like the vacuum line for the map sensor. The upper one plugs into the intake plenum near where the map sensor is mounted.

quote Originally posted by Xenoblast: Looks like the vacuum line for the map sensor. The upper one plugs into the intake plenum near where the map sensor is mounted.

I agree.

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3.4L Supercharged 87 GT and Super Duty 4 Indy #163

Heed my warning,

Replace that T-Joint, yours look old and stretched out. Mine was creating a leak that was preventing my engine from staying running. You can get the right parts at autozone or the like, just replace all the fittings while you are there.

quote Originally posted by Dukesterpro: Heed my warning, Replace that T-Joint. ...

Second this.
Most of the vacuum-related issues that I've encountered with Fieros (and lots of other cars) have been caused by degraded rubber - fittings and/or hoses.
You should be able to find replacements at Advance Auto.

(I have gone as far as to replace all the plastic hard lines with rubber tubing, using plastic "T"s, etc. This was with a different intake manifold, however.)