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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > abs light coming on and off



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      05-18-2007, 02:13 PM   #1
mingrygt
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abs light coming on and off

I was driving to work today and my abs light comes on, my speedo and tach go to "0" and then back to normal.. Anyone else having the same problem.

my car has 8k on the odo and procede
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      05-18-2007, 02:53 PM   #2
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probably a loose wire... tug on all your ECU connectors, and re-seat them to make sure.

Either that, or your front wheels arent spinning

ABS fault shows up on a dyno sometimes.... if its not done correctly.

The speedo / tach thing makes me think loose wire, re-check your install
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      05-18-2007, 04:50 PM   #3
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Are you lowered? This happens to cars with after market suspension...

This car's monitor system is so sensitive, it whine and cries about everything..
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      05-18-2007, 04:51 PM   #4
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+1. Check the wire connections in the white loom (crank angle sensor wire). A loose connection here will cause exactly what you described. Might as well check the ground loop while you're at it too since a loose ground could induce that as well.

Tires and suspension mods can also induce things like this. But if you're car is stock in that respect, you can rule that out.

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      05-18-2007, 07:41 PM   #5
mingrygt
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yea, maybe the suspension then, the car is on race springs.
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