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Old 08-06-2003, 07:35 PM   #1
lukecp
Formerly yellow72custom
 
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Location: Austin, TX
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Brake light?

I just went in my truck, and the BRAKE light in the fuel guage was lit up, even though the key was off. I turned the key on and the light went out. Also, the needle on my cheap tach usually falls straight down when i turn off the key, but it went counter clockwise, towards the 8k rpm mark, and stopped there. The MC has plenty of fluid in it and the brakes work great. I disconnected the wire at the proportioning valve and the light stayed on.

Before i go mess with it after dinner, any ideas? Bad ground in the insturment cluster maybe?
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride.
'70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck.
'97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg
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Old 08-06-2003, 08:12 PM   #2
smallbigblock
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I can't answer your question but I have a similar problem with mine. It flashes when the engine is running. The only way I can get it to stop is unplug it at the proportioning valve.
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Old 08-06-2003, 08:21 PM   #3
72BLAZERDUDE
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Got the same problem with mine. Just unplugged it. First I thought it had something to do with a prop valve or mast cyl. Even thought maybe bad brake booster( Wanna a "A" ticket ride, disconnect the vacumn line fron your power brake unit and go drive it. Gives a whole new meaning to the word "whoa". It is probably just a bad sender.
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Old 08-06-2003, 08:43 PM   #4
lukecp
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Well, i just went and disconnected the "-" battery cable, then re-connected it and the problem stopped. Maybe the ground cable was just loose ??

Guess its fixed until it mysteriously pops up again later, lol
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride.
'70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck.
'97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg
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Old 08-06-2003, 08:53 PM   #5
old Rusty C10
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see if it comes back now tomorrow or after running the truck a while it could be possible theres a problem somewhere possibly the ignition switch or in one of the other in cab wwiring harnesses
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