brake light switch

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Mar 12, 2016 | 08:17 PM

dumper94

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Diesel Fan

Joined: Jan 2016

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brake light switch

I notice when I apply the brakes my tach(rpms) go up does this mean my brake switch is bad and also would this throw off other codes?

Mar 13, 2016 | 04:56 PM

Mayhem

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Joined: Jun 2012

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From: Middle of nowhere Tn

Quote:

Originally Posted by dumper94

I notice when I apply the brakes my tach(rpms) go up does this mean my brake switch is bad and also would this throw off other codes?

Is your cruise control and brake lights working? If so its good could be a bad ground though.

Apr 23, 2016 | 08:50 AM

drgracen

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Joined: Aug 2015

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Depends how fast you're going when brakes are applied. If you're at driving speed and you touch the brakes, that unlocks the converter which will cause a slight increase of rpm's

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