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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 01-16-2012, 10:23 AM   #1
R3LL
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Fluctuating temperature gauge?

Recently my temperature gauge began to fluctuate between the half way mark and 1/4. I changed the thermostat and it's still doing the same thing staying half way between the two and sometimes rising up to half, is this normal or anything else I could be missing?
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Old 01-16-2012, 10:36 AM   #2
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I had the same issue. Took it to the dealer and had a sticky thermostat. Replaced it now it is fine. Sometimes it does go below half a bit but I think that should be normal. Reaching 1/4 is a bit too much IMO.
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Old 01-16-2012, 01:13 PM   #3
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Name:	ImageUploadedByBimmerApp1326741139.114529.jpg
Views:	90
Size:	27.2 KB
ID:	432642 the temp stays like this most of the time
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Old 01-16-2012, 01:23 PM   #4
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Attachment 432642 the temp stays like this most of the time
I had that same problem but mine was a bit more to the left. A new thermostat did the job for me. I am not sure what else is causing it in your case. Have you taken it to the dealer?

Is your oil gauge doing the same thing or is it smack in the middle?
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Last edited by Verooom; 01-16-2012 at 01:27 PM.
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Old 01-16-2012, 02:30 PM   #5
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Looks normal to me...

Did you do the thermostat job yourself?
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Old 01-16-2012, 03:33 PM   #6
Verooom
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Any one of you fellow M3 owners oil gauge stay in the center all times or does it like to dance back and forth?
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Old 01-16-2012, 04:57 PM   #7
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yeah did it myself, my friend is a BMW tech he said its normal but just wanted to make sure
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Old 01-16-2012, 09:46 PM   #8
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I think my thermostat sticks at times. I was thinking about doing the work myself. How difficult was it? Did you end up replacing anything else?

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Old 01-16-2012, 09:49 PM   #9
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It's pretty easy my first time doing it and took me about 30 mins, only thing is the space is tight so it gets fustrating. Only parts i changed were the thermostat and the two o rings
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Old 01-16-2012, 11:36 PM   #10
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Originally Posted by Verooom View Post
Any one of you fellow M3 owners oil gauge stay in the center all times or does it like to dance back and forth?
sounds like your oil level sensor needs to be replaced. Very straight forward and you can do it the next time you're in there doing an oil change.
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Old 01-10-2013, 09:37 AM   #11
jakemuscan
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temperature gauge below 1/2

Hi folks, I've owned more than 10 bmw cars so far and the temperature gauge always stays on 1/2 or the 12 o'clock position after 10-15 minutes of driving (it can fluctuate slightly below the 1/2 mark a tiny bit which is normal but not down to the 1/4 mark). Just purchased another 2004 E46 yesterday and the temperature gauge stays on the 1/4 mark on the highway and may go up to the 1/2 point when sitting in traffic. I suspect the thermostat or air in the radiator ? Any thoughts ?
-thanks for your help
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Old 01-10-2013, 11:05 AM   #12
///M Powerd
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Mine does the same. I heard its normal.
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