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Old 01-14-2009, 10:41 AM   #1
GTA_G20
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318i running cold

What is the normal operating temp for a 1993 318i?

Ever since doing my engine swap in the summer the temp needle does not exceed the little blue label in the guage. I cant figure out what the issue is. Heat is cold-warm def far from hot and no matter how hard i drive it it rarely leaves that blue label. Never seen the 1/4 hash marks. Most cars before this normal temps are usually the needle in the middle of the temp gauge.

any ideas?
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Old 01-14-2009, 11:47 AM   #2
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Does it move at all when you start the car and drive it for a while? If it isnt moving at all or not moving very much there might be a problem with the connection somewhere. I don't know alot about the temp meter and how everything works in there, but the first thing to come to mind was that it wasn't connected properly.
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Old 01-14-2009, 11:49 AM   #3
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oh it moves but not very much, odd time it'll raise just above the blue mark but never has it touched the 1/4 mark. Im thinking thermostat?
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Old 01-14-2009, 11:52 AM   #4
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i got the same problem on my 318 and im pretty sure its the thermostat. Will let you know after i changed it.
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Old 01-14-2009, 11:53 AM   #5
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thanks man
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Old 01-14-2009, 03:15 PM   #6
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very likely to be thermostat.
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Old 01-14-2009, 03:19 PM   #7
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Is this a DIY job w/o mess?
Am I going to need my cooling system bleed after swapping this out?
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Old 01-14-2009, 03:39 PM   #8
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its shouldnt be too hard and yes you will need to bleed the cooling system but its a very simple job
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Old 01-14-2009, 03:50 PM   #9
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http://www.pelicanparts.com/BMW/tech...Thermostat.htm
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Old 01-14-2009, 11:22 PM   #10
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Thermostat for SURE! I did it on my car not long ago...and have 3 friends with the same problem (on 318's). The job is somewhat a mess...but WELL worth it! (car also uses more gas when running cold all the time)
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Old 01-15-2009, 05:20 PM   #11
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my only question is why does the diy tell you to drain the coolant and remove the belt? cant u get to it with out taking off the belt, and if u dont drain coolant wont only little bit leak out the hoses?
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Old 01-15-2009, 05:26 PM   #12
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reason i didnt wanna DIY is because of the amount of coolant loss Id say a good half litre if not more
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Old 01-15-2009, 10:39 PM   #13
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A lot will leak out...and you dont have to take any belts off!
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