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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 11-04-2014, 03:51 PM
hunterjohnson00 hunterjohnson00 is online now
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Join Date: Nov 2014
Posts: 3
Mein Auto:
E30 abs only works during rain

Abs light is off once car is started but once I reach about 2-5 mph the light comes on. I checked the relay and soldered in a new fuse and holder.

here is where I get confused , and I'll list a few situations.

Situation 1:
It is raining, car is outside , abs
Light never comes on and abs works.

Situation 2:
It's light rain or road is wet. when I Start car, no abs light ,-start driving light comes on. say at a stopLight I turn car off then back on. The abs Will now work

Am I right to think this has something to do with one of the wheel sensors. If not can someone point me in the right direction.
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  #2  
Old 11-04-2014, 05:06 PM
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downhiller downhiller is offline
livin large
Location: des moines
 
Join Date: Oct 2007
Posts: 7,272
Mein Auto: 2012 hypermotard 796
or a loose ground to the abs module
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  #3  
Old 11-04-2014, 05:13 PM
hunterjohnson00 hunterjohnson00 is online now
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Mein Auto:
And this would cause it to work in the rain ?
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  #4  
Old 11-04-2014, 11:24 PM
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hornhospital hornhospital is offline
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Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 14,872
Mein Auto: 1995 318is / 1993 325is
Pretty sure it's going to be a ground somewhere like DH said. BMWs are real pissy when it comes to grounds. The most perfect looking connection can be bad and cause all sorts of weird problems. It may be equal parts wet weather/cold conditions causing it to make and break ground connections.
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  #5  
Old 11-05-2014, 11:27 PM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
Join Date: Aug 2012
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Mein Auto: E23;E30;E38;E32;E34 +
+1 HH. Earth points need really careful checking b4 anything else.
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  #6  
Old 11-07-2014, 06:55 AM
7pilot 7pilot is offline
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Mein Auto: 90 Ford Tempo
$$ on a compromised sensor.
3/8 drive ratchet, extension, 5mm 3/8 drive Allen tool.
pull each wheel and sensor.
Examine the sensor harnesses especially RF and clean and reinstall sensors.
If the ABS stays on then it is likely a short or bad sensor.

m
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