Weird headlight problem...sorta
Thread Starter
Senior Member
Joined: Oct 2001
Posts: 504
Likes: 1
From: reidsville,nc,usa
Car: 1989 Firebird Formula 350
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 9 Bolt Borg Warner 3.27 gears
Weird headlight problem...sorta
I gotta 89 Firebird Formula 350. Everytime I slow down to come to a stop, the headlights will blink one time as the tranny downshifts back to 1st gear. Every single time. New alternator and belt. Any input?
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Your Car Blinks, Therefore It Thinks
You said “blinks”.
Did you mean:
Lights flash on for a moment.
Lights flash off for a moment.
Doors open for a moment.
Doors close for a moment.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
If People Drove Any Slower They’d Be Going Backwards
Did you mean:
Lights flash on for a moment.
Lights flash off for a moment.
Doors open for a moment.
Doors close for a moment.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
If People Drove Any Slower They’d Be Going Backwards Thread Starter
Senior Member
Joined: Oct 2001
Posts: 504
Likes: 1
From: reidsville,nc,usa
Car: 1989 Firebird Formula 350
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 9 Bolt Borg Warner 3.27 gears
Re: Weird headlight problem...sorta
Well, they blink momentarily as if it were a loss of power going to them. However, I did notice today the the blower motor does the same thing. I can tell the fan speed lowers a little as well. It has to be a system wide thing. Could the battery be bad and putting a strain on the alternator? I know it has a Hypertech cooling fan switch and now the cooling fan on the passenger side runs all the time now. That may have alot to do with it. I'm thinking of putting a stock fan switch back in. The car has a 180 degree thermostat and a Hypertech 4028 switch.
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