'89 Firebird -- A few electrical problems.
Thread Starter
Junior Member
iTrader: (1)
Joined: Aug 2009
Posts: 49
Likes: 0
From: ND
Car: 89 Firebird Formula 350
Engine: 1974 350
Transmission: '84 Trans Am T5
Axle/Gears: Borg warner 3.27
'89 Firebird -- A few electrical problems.
Hi,
I have a few electrical problems on my 89 Formula. First of all, I swapped to carb from TPI and the cruise doesn't work, I dont know if it worked before the swap (car couldnt propel itself). I check the grey wire at the brake pedal and it has 12 volts with the key on and the cruise switch on. There is also vacum at the servo under the hood. Where is the cruise control module located and Where should I even start?
Second is a short in the blinker/back up light circuit. All of the lights work flawlesly (blinkers blink like they should, back up lights work) But after a little bit it blows the fuse. I looked a little but didnt find anything. What/where do I look for this also???
Thanks.
-Ryan
I have a few electrical problems on my 89 Formula. First of all, I swapped to carb from TPI and the cruise doesn't work, I dont know if it worked before the swap (car couldnt propel itself). I check the grey wire at the brake pedal and it has 12 volts with the key on and the cruise switch on. There is also vacum at the servo under the hood. Where is the cruise control module located and Where should I even start?
Second is a short in the blinker/back up light circuit. All of the lights work flawlesly (blinkers blink like they should, back up lights work) But after a little bit it blows the fuse. I looked a little but didnt find anything. What/where do I look for this also???
Thanks.
-Ryan
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: '89 Firebird -- A few electrical problems.
This is for a 1992 - but should be the same:
Wiring diag for CC: http://www.austinthirdgen.org/mkport...se_control.jpg
Tons of wiring diags here: http://www.austinthirdgen.org/index.php?pid=19
Maybe that will help some.
Wiring diag for CC: http://www.austinthirdgen.org/mkport...se_control.jpg
Tons of wiring diags here: http://www.austinthirdgen.org/index.php?pid=19
Maybe that will help some.
Thread Starter
Junior Member
iTrader: (1)
Joined: Aug 2009
Posts: 49
Likes: 0
From: ND
Car: 89 Firebird Formula 350
Engine: 1974 350
Transmission: '84 Trans Am T5
Axle/Gears: Borg warner 3.27
Re: '89 Firebird -- A few electrical problems.
Yeah thanks, that will help some, but does anyone know where the module is located and how to diagnose the system??
Thanks.
Thanks.
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: '89 Firebird -- A few electrical problems.
The cruise control module is located pass side, up in and behind the ECM.
Thread Starter
Junior Member
iTrader: (1)
Joined: Aug 2009
Posts: 49
Likes: 0
From: ND
Car: 89 Firebird Formula 350
Engine: 1974 350
Transmission: '84 Trans Am T5
Axle/Gears: Borg warner 3.27
Re: '89 Firebird -- A few electrical problems.
Thanks, I found it and got the cruise to work. It was broken wires on the blinker lever. So now any ideas on the short?? Is this a common thing?
Thread
Thread Starter
Forum
Replies
Last Post
Thomas
Exterior Parts for Sale
21
Oct 7, 2015 05:33 PM
Thomas
Interior Parts for Sale
12
Oct 3, 2015 05:34 PM
Dialed_In
Firebirds for Sale
2
Aug 20, 2015 01:45 PM





