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5.0 Mustangs Tech Forum

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Unread 06-26-2013   #1 (permalink)
Gregga is offline Rookie


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Default brakelights stay on 87 GT

replaced the brake booster in my sons 87 gt with rebuilt from discount parts store. Of course I turned the core in already(dumb move). Found some good pics on aLL MUSTANG FORUM. I think all the bushings etc, are installed correctly. It seems like the pushrod that contacts the brakelight switch is too long. It does not look OEM it is gold anodized. There does not seem to be any play in the switch. Has anybody else run into this problem before. I am tempted to grind or file down end of pushrod. I really do not want to pull the booster again the blood is just start to drain back out of my head from the first time.
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Unread 06-26-2013   #2 (permalink)
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Actually this happened to my car when I swapped the Cobra Booster in, I ended up having to loosen the 4 nuts and wiggle the booster around a little, tighten the nuts back up and it cured the brake lights on issue. Hope this helps and you are able to get it fixed.
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Unread 06-27-2013   #3 (permalink)
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thanks for the tip. I found a fix for now. It may not be the best solution but it works for now. I removed the black plastic bushing insert and it gave me the extra play I needed. What a
nother squeak or rattle in a 25 year old car?
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Unread 06-27-2013   #4 (permalink)
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Glad you found a temporary solution... I was really stumped when I had that issue as I adjusted the pushrod using the proper formula plus ended up changing the brakelight switch and then trying an SN95 switch, I was really at wits end when I thought of wiggling the Booster as I figured it must have been slightly cocked out of position.
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