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89 firebird headlights go up not down

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Old May 14, 2008 | 05:40 PM
  #1  
1fastlady's Avatar
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89 firebird headlights go up not down

Hello, New to this so be patient please

I have a 1989 Firebird. When I bought the car the headlight motors were bad. Replaced both motors. When I turned them on only one worked. Tested the motors and both worked in both directions. Replaced the box on the firewall that says "guide" on it (think this would be the headlight module). Now they go up but not down. My 1986 trans am doesn't have the same set up I noticed so I can't swap out the modules to see if I got a bad one.(Got the replacement at a salvage yard) Any ideas?
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Old May 16, 2008 | 01:11 AM
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Kevin91Z's Avatar
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: 89 firebird headlights go up not down

Go to http://www.top-downsolutions.com/ and get ahold of the owner Lon. he sells headlight repair kits and can help you get yours working again.
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Old May 16, 2008 | 09:55 AM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: 89 firebird headlights go up not down

Sounds more like a bad headlight control module from junkyard than the headlights themselves. If the worked before putting the box in, I'd bet on the box.
Instead of buying bad boxes from a junkyard, it might pay off to buy a new one. I thought they were in the $50 range.

Lou
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Old May 18, 2008 | 10:45 AM
  #4  
digitalrebel's Avatar
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From: Indianapolis, IN
Car: 90 IROC Z
Engine: 350 60 over
Transmission: t5 and 700r4
Axle/Gears: 3.08
Re: 89 firebird headlights go up not down

I have the same problem on my 89 firebird i traced it to a shorted wire where the harness goes through the fire wall right behind the fuse box. If you need more info let me know.
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Old Mar 18, 2012 | 04:07 PM
  #5  
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Re: 89 firebird headlights go up not down

My 85 trans am drivers side headlight goes up but will not go down. The passenger side works fine, and the motor works both ways. Im thinking a short but have no clue were to start?
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Old Apr 4, 2012 | 01:21 AM
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From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Re: 89 firebird headlights go up not down

OK, Top-Down Solutions new and improved web site is FINALLY up and running. Thanks everyone for your patience.

Lon
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