From the "Now what"? files...

Today NO Highest Fan Blower Speed! I have the 3 medium/lower speeds but but highest speed is gone. Nothing. Is it a relay for high sped fan? If so where? Thx.

Relay in front on heat/ac "box."
See 88 GT Heater Fuse Blown https://www.fiero.nl/forum/Forum2/HTML/145503.html

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(Jurassic Park)

The Ogre's Fiero Cave

quote Originally posted by theogre: Relay in front on heat/ac "box." See 88 GT Heater Fuse Blown https://www.fiero.nl/forum/Forum2/HTML/145503.html

In my case, it was a bad socket (or at least the contact in the socket.)
Be careful.. you can find the (supposedly) exact replacement socket on Amazon or eBay, but it will come with much smaller wires. Will probably burn out (or burn up) in short order.
I ended up stealing a socket and the associated wires from an old harness.

Yes there is one.
I would check the relay.

quote Originally posted by Raydar: [QUOTE]Originally posted by theogre: Relay in front on heat/ac "box." See 88 GT Heater Fuse Blown https://www.fiero.nl/forum/Forum2/HTML/145503.html

In my case, it was a bad socket (or at least the contact in the socket.)
Be careful.. you can find the (supposedly) exact replacement socket on Amazon or eBay, but it will come with much smaller wires. Will probably burn out (or burn up) in short order.
I ended up stealing a socket and the associated wires from an old harness.
[/QUOTE]

What kind and where's this "socket"?

quote Originally posted by 72and86: What kind and where's this "socket"?

There are two of them, IIRC. They're in the front compartment, near the washer fluid reservoir. (The relays look just like the fuel pump and A/C relays that are in the back.)
I think that one is for the washer pump (that one is easy to identify, since the pump is right there) and the other is for the high speed fan setting.
Look for the socket with the large red and purple wires. One of those, on my car, is the one that had the compromised connector.

[This message has been edited by Raydar (edited 10-24-2021).]