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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 08-26-2007, 05:51 AM
Court M3 Court M3 is offline
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overhead panel coolant light

Mine has been on for awhile now, but temp gauge reads fine. Any ideas what could cause this? Thinking maybe cap on resevoir
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  #2  
Old 08-26-2007, 07:20 AM
Its13oclock Its13oclock is offline
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Mein Auto: '89 325is
That happened to me before as well, and it turned out that the sensor in the coolant tank was broken.
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  #3  
Old 08-26-2007, 07:27 AM
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lordofthewaters lordofthewaters is offline
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+1 a pretty common problem as I understand it.
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  #4  
Old 08-26-2007, 09:26 AM
Court M3 Court M3 is offline
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Ok going to check it out this afternoon. Will a late model sendsor work just as well?
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  #5  
Old 08-26-2007, 02:50 PM
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omw41 omw41 is offline
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Quote:
Originally Posted by Court M3 View Post
Ok going to check it out this afternoon. Will a late model sendsor work just as well?

it should...but you may have to splice the connector. This is a real common issue and the part sells on Ebay for around 15.00.
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  #6  
Old 08-27-2007, 08:38 AM
rbn14 rbn14 is offline
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I would test the sensor first. Just pull it out put an ohm meter on it and see it the circuit closes . I thought mine was bad but it was the connector.
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  #7  
Old 08-27-2007, 08:49 AM
danielw05 danielw05 is offline
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I cleaned the connections and now mine works just fine.
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  #8  
Old 08-27-2007, 11:07 AM
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omw41 omw41 is offline
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I cleaned the connections and now mine works just fine.
Yeah...that too.
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  #9  
Old 08-27-2007, 02:21 PM
Spunkye30nOk Spunkye30nOk is offline
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Location: oklahoma city
 
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Mein Auto: e30 325is
if you haven't replaced the sensor just replace its like 36 bucks from the dealership. When my light started coming on *even though it was full of coolant* it was the sensor in the coolant tank. Pulled mine out and the white looking piece at the bottom of the sensor was pretty much dark brown *fluid was green though* I figured it was probably the original sensor.
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  #10  
Old 09-02-2007, 02:33 PM
John L. Harrell John L. Harrell is offline
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Location: Pa. USA
 
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The sensor is a fluid level sensor. It does not have anything to do with temperature.

Roger on the ohms check for good/bad.

Wires do break as it is in a location that gets bumped/disturbed.
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  #11  
Old 09-02-2007, 07:50 PM
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omw41 omw41 is offline
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I thought he said temp gauge was fine????
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