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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 07-19-2016, 04:18 PM   #1
06.325ci
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Aftermarket Temp Gauge

Hey guys soo with all the coolant problems on e46s and the dummy temp gauges that bmws have, i was wondering how to install an aftermarket precise temperature gauge. Dont wanna play the waiting game untill it overheats, i wanna be able to check coolant temperature easily, And i was wondering if anyone has any tips on where and how? And if its a bad idea and why. Thanks in advance!
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Old 07-19-2016, 04:33 PM   #2
Hukerfaker
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Yup, that's what I'd like too. I had cars with "real" temp gauges and always thought it was crap car that couldn't keep its temp needle stuck in the middle. How wrong can man get. How about some Bluetooth car/phone interface? I'd settle with that if nothing else.

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Old 07-19-2016, 04:40 PM   #3
lathrash
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Have you looked into reprogramming the temp gauge to a "safer" buffer?
http://forum.e46fanatics.com/showthread.php?t=1013600
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Old 07-19-2016, 09:18 PM   #4
jmo69
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I did it on my e36 by tapping into the throttle body coolant hose and sacrificing the sunglass cubby, but IDK how to attempt it on my m54. I suppose you could make an adapter and cut the upper radiator hose for the sender and get an A-pillar gauge pod for the gauge. This is the DIY I wrote for the oil pressure and water temp gauges on my m52. http://www.bimmerforums.com/forum/sh...rce-for-gauges
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Old 07-19-2016, 09:39 PM   #5
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BMW-North E46 Electric Fan Guide

Download a clean working copy of BMW Standard Tools with Special Tests for e46 :
Single NRG file: Complete BMW Standard Tools Suite You will also need ISO Workshop (free edition - linked) to create the install directory (image) or disk. NRG file: 347,183 Kb

Last edited by BMW-North; 09-30-2016 at 10:37 AM.
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Old 07-19-2016, 11:02 PM   #6
rellik
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p3cars.com. ECS Tuning sells them. spendy, but a great gauge.
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Old 07-19-2016, 11:13 PM   #7
Hamsocne
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I use Torque Pro and an OBDII to Bluetooth. Gives the temp and you can set an audible alarm at the temp you choose. Simple, easy, and inexpensive.
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Old 07-19-2016, 11:19 PM   #8
Knight
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Re-coding the existing temp gauge is a straight forward and seamless solution.

If you want a digital readout, look into an UltraGauge.
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Old 07-19-2016, 11:57 PM   #9
jfoj
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UltraGauge FTW.

Priced right, programmable threshold alarms. Triggers alarms with Pending or Hard codes, Can read OBDII codes and clear them. Auto sleep and wake up.

But also consider reprogramming the coolant gauge buffer. The only thing it lacks is an alarm. You could consider Coolant Snitch, but UltraGauge is a small and cost effective option.
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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 07-20-2016, 08:07 AM   #10
edmondhk
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Quote:
Originally Posted by jfoj View Post
UltraGauge FTW.

Priced right, programmable threshold alarms. Triggers alarms with Pending or Hard codes, Can read OBDII codes and clear them. Auto sleep and wake up.

But also consider reprogramming the coolant gauge buffer. The only thing it lacks is an alarm. You could consider Coolant Snitch, but UltraGauge is a small and cost effective option.
Can the UltraGauge read the oil temp/transmission temp?
I have reprogram the coolant buffer, it's fine now, but the others....
I don't want to put so many gauge in my car, it just not feel right
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Old 07-20-2016, 11:16 AM   #11
jfoj
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UltraGauge has a special version that supports transmission fluid temperature on SOME vehicles, not not all. I also think that version of the gauge does not support reading and clearing OBDII codes???

So not sure I would bank on trans temperature support. Assume you could look at the UltraGauge Forum or ask Tech Support about BMW trans temp support.
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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 07-20-2016, 12:44 PM   #12
dan4081
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This is how I watch my temps.....
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Old 07-25-2016, 11:13 AM   #13
Hukerfaker
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I wouldn't mind to hear more info on the above setup?

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Old 07-25-2016, 12:04 PM   #14
dan4081
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Originally Posted by Hukerfaker View Post
I wouldn't mind to hear more info on the above setup?

Sent from my GT-I9300 using Tapatalk
I replaced the stereo with an Eonon headunit. The newest Eonons run Android just like a phone so I added a $12 bluetooth obd module (from Amazon) and can watch temp guages, check error codes, and many other things running the torque app.

There are a few threads about the eonon on this forum.
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