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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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Old 11-04-2014, 02:51 PM
hunterjohnson00 hunterjohnson00 is offline
Registered User
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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Old 11-04-2014, 04:06 PM
downhiller's Avatar
downhiller downhiller is offline
livin large
Location: des moines
Join Date: Oct 2007
Posts: 7,545
Mein Auto: 2012 hypermotard 796
or a loose ground to the abs module
I know a lot about cars. I can look at a car's headlights and tell you exactly which way it's coming
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Old 11-04-2014, 04:13 PM
hunterjohnson00 hunterjohnson00 is offline
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Join Date: Nov 2014
Posts: 3
Mein Auto:
And this would cause it to work in the rain ?
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Old 11-04-2014, 10:24 PM
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hornhospital hornhospital is offline
D'oh, You Kids!
Location: In the Grumpy Chair
Join Date: Jan 2008
Posts: 16,548
Mein Auto: E24x2,E36x2,E30x1, F150
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.
Quotes to live by:
guessing gets expensive...drivinfaster
nothing is more expensive than a cheap BMW...c4harpe13
buying a ratty example (of a BMW) is a parasitic relationship.(and you ain't the mosquito) 7pilot
Ken Kanne, Silverhill, AL, E36 Forum Mod/Craigslist addict/Hoarder of all sorts of stuff
BMW-CCA #441426
1995 318is "Bebe"; 1993 325is "Elvira"; 1985 635CSi "Katja"; 1984 633CSi "Sylvia"; 1987 325is "Odette"

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Old 11-05-2014, 10:27 PM
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BMWFatherFigure BMWFatherFigure is offline
Old School
Location: Perth, Western Australia
Join Date: Aug 2012
Posts: 3,705
Mein Auto: E23;E32;E34;E38;R50;R55
+1 HH. Earth points need really careful checking b4 anything else.
Good - Fast - Cheap: Pick any two.
E23 735i; E32 735iL; E34 535i; 2 X E38 735iL (Oxford Green and Alpine White); R50 Cooper; R55 Cooper Clubman. E38 Parts Car
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
I've just changed my wiper blades and now my reverse lights don't work. Should I change my fuel pump relay?
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Old 11-07-2014, 05:55 AM
7pilot 7pilot is offline
Location: i dunno
Join Date: Feb 2011
Posts: 279
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.

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