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04-07-2004, 12:26 AM | #1 |
that's right!
Join Date: Mar 2004
Location: Topsham, ME, USA
Posts: 101
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Brake Light Flickers... occasionally.
Ok, so I have a 1970 K/20 with a BB 402 in it.
On occasions, my brake light will flicker. It used to do it only when I accelerated, but then I set the timing a little and now it flickers with no rhyme or reason. I first thought it was a parking brake issue, but found that I have no wires connected to the parking brake. So now I'm thinking its a vacuum oriented... maybe? I haven't had any brake troubles, but maybe I should bleed them anyway?? Any suggestions would be great. Thanks.
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70-K20-4X4 |
04-07-2004, 12:29 AM | #2 |
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Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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the brake light comes on when there is unequal pressure in the lines...
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70 longbed 496/th400/Ford 9" |
04-07-2004, 12:38 AM | #3 | |
that's right!
Join Date: Mar 2004
Location: Topsham, ME, USA
Posts: 101
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Quote:
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70-K20-4X4 |
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04-07-2004, 12:48 AM | #4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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the light has nothing to do with the booster or the vacume in it, it deals with teh hyd pressure in the master cylinder.
I'll bet the brown wire is not hooked to the nipple on the bottom of theproportionaing valve, and when you floor it the wire swings and grounds out causing the light to come on. |
04-27-2005, 09:38 PM | #5 |
that's right!
Join Date: Mar 2004
Location: Topsham, ME, USA
Posts: 101
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I found it. The brown wire was rubbing on some metal in the engine compartment and it wore through - grounding out occasionally. It took a while to find, but it's fixed now. Thanks for the help!
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