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| Parking Brake Warning Light http://classiccamaroclub.mfatw.com/viewtopic.php?f=4&t=764 |
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| Author: | madmungo [Wed Sep 16, 2009 5:12 pm ] |
| Post subject: | Parking Brake Warning Light |
Hi, My parking brake warning light stays on after i released the parking brake. It has got steadily worse, and now only goes off when i lift the pedal slightly with my foot, then goes back on again when i release the pedal. Usually there is an obvious adjustment on a screw in switch or something for this kind of thing, but i can see nothing. Does anyone know how to adjust this? Thanks in advance :-D |
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| Author: | Sammy_C [Sun Sep 27, 2009 8:36 am ] |
| Post subject: | Re: Parking Brake Warning Light |
I had a similar problem and did nothing more than bleed the brakes and un-plug the cable to the proportioning valve. However I accept that this is not very sophisticated advise so I propose the followng, taken from the nastyz28.com website: "...It sounds like you still have air in it someplace. Three things can cause the brake light to go on. 1. The switch on the brake pedal. (e-Brake applied) 2. The switch on the master cylinder. (Pressure variance between front and rear) 3. A shorted circuit for the light. Disconnect the plug on the master cylinder and the brake. If the light still comes on.. your problem is with the circuit. I'm guessing the light won't come on if you disconnect it from the master cylinder but that will tell you where it is finding a ground." Whilst I cannot personally say that this will work, it's worth a shout. Good luck! |
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| Author: | madmungo [Mon Aug 22, 2011 10:16 pm ] |
| Post subject: | Re: Parking Brake Warning Light |
Thanks for the reply. As it turns out i am giving the old girl a bit of work this summer and have refurbed the brakes. After a solid bleeding and adjusting the rear shoes to account for slight weqr on the shoes and the light goes off happily. Just wanted to put the confirmed answer on the forum :-) |
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| Author: | 78 Camaro [Tue Aug 23, 2011 12:08 pm ] |
| Post subject: | Re: Parking Brake Warning Light |
Ye so if it's the e-brake then if you use your gymnast skills to lie upside down in the drivers footwell and look at the ebrake, you'll see the wire that plugs into the back of the parking brake assmebly (nearly by the fuse). That switch is pushed in when the e-brake is off, breaking the circuit (that wire is the ground). it sounds like the ebrake cable is a bit loose (same on mine) so its not pulling the mechanism back far enough to push in the switch. That or the mechanism goes too far back and has pushed the switch back over time - it's held in place by 2 metal prongs which can be easily moved backwards and forwards. Hope that helps! Cheers, Ray |
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