Little Help please?
Thread Starter
Junior Member
Joined: Nov 2009
Posts: 7
Likes: 0
Car: 91 Formula Firebird
Engine: LT1
Transmission: 700r4
Axle/Gears: 373
Little Help please?
Ok, So hear is the deal. I have a 91 Formula Firebird, and the A/c - Heater will not blow at all, this has been a problem for awile and i cant figure out what is wrong with it.I have replaced all the Relays and Resistors, the Switchpanel, and tested the blower motor and it works fine. With winter just around the corner id like to get this fixed.A Little Help Please?TY in advance for everything, Deadd
Supreme Member
Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: Little Help please?
Been there an wound up in the same place, my fix was to wire a toggle switch on the dash to send a full 12v to the blower motor directly.
Which is about twice as high, as high. Blows like crazy.
Which is about twice as high, as high. Blows like crazy.
Supreme Member
Joined: Jan 2009
Posts: 1,126
Likes: 0
From: Columbus Ohio
Car: 91 Z28,64ImpalaSS4094spd,67 Galaxy
Engine: Dart 415Profiler hd,cmprlrs,Hlly750
Transmission: Built 700R4, 3200 stall
Axle/Gears: 3:89 Moser 9"
Re: Little Help please?
Mine had a bad ground on the fan itself..
Thread Starter
Junior Member
Joined: Nov 2009
Posts: 7
Likes: 0
Car: 91 Formula Firebird
Engine: LT1
Transmission: 700r4
Axle/Gears: 373
Re: Little Help please?
Thanks for the imput, im trying to look for something that still will make this work properly im looking to make this into a show car, If there is any other suggestions please let me know thank you
Thread Starter
Junior Member
Joined: Nov 2009
Posts: 7
Likes: 0
Car: 91 Formula Firebird
Engine: LT1
Transmission: 700r4
Axle/Gears: 373
Re: Little Help please?
oh i got it just use the 12v source on a toggle and use the factory controls, it will all still work just have a little more juice cause of it getting pure 12v?
Supreme Member
Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: Little Help please?
Yea something like that, it will run faster getting a full 12. But you should be able to hide everything just fine and make it look as if it works like stock.



