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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 10-12-2014, 10:59 AM   #1
Csmalley311
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Join Date: Sep 2014
Location: Pls
Posts: 13
My Ride: 2002 325xi
Coolant temp

Anyone know what temp my obc should display in F? Mine is at around 93 degree hot. Thanks
2002 325xi


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Last edited by Csmalley311; 10-12-2014 at 11:00 AM.
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Old 10-12-2014, 11:07 AM   #2
jfoj
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Join Date: Nov 2009
Location: Fairfax, VA USA
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My Ride: 330CiC, M5, X5
96C is the target temp these engines should run at. Drive the car on the highway and see where the temps stabilize.

Soft thermostats area a very common problem.

See this thread - http://forum.e46fanatics.com/showthread.php?t=964491

You would be best to read this thread on a computer and not a phone.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 10-12-2014, 02:45 PM   #3
blarf
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Join Date: Oct 2009
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Quote:
Originally Posted by jfoj View Post
96C is the target temp these engines should run at. Drive the car on the highway and see where the temps stabilize.
Unless you live in an extremely flat area and are driving around with cruise control, the temps won't really stabilize if you're looking at the OBC readout. After cresting a hill I've seen temps drop as low as 80C, under part load they'll rise to about 96C, but usually hover around 93C. Idling it'll let the temps rise to about 98C.

With the stock temperature gauge, if it moves off of 12 o'clock at all you have a problem. If it doesn't, you should be fine.
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Old 10-12-2014, 05:02 PM   #4
Csmalley311
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Join Date: Sep 2014
Location: Pls
Posts: 13
My Ride: 2002 325xi
Thanks , I'm running temp from 90-98 nothing higher. I stay at 12oclock with stock gauge. My only reason for my post is after replacing my expansion tank and bleeding system my low coolant light stays on. I've checked fluid level a number of times and I'm good on coolant..... Maybe a bad coolant sensor?
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Old 10-12-2014, 08:47 PM   #5
jfoj
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Join Date: Nov 2009
Location: Fairfax, VA USA
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My Ride: 330CiC, M5, X5
Really need to read the 3rd link in my signature.

90C is actually too cool and if you have a soft thermostat you want to replace it before it gets too cold out.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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