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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 12-13-2012, 08:18 AM
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robs540i robs540i is offline
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Normal operating temperature

I'm getting conflicting answers as to what the normal operating temperature should be on my 2006 e90 325i. Just had the water pump and thermostat replaced. The range seems to stay between 195-205. I live in Delaware so outside temperature right now ranges from mid 30's to 50's right now.

I was told this is normal temperature, I was told by another mechanic it should be down in the 185 range.
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  #2  
Old 12-13-2012, 09:00 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by robs540i View Post
I'm getting conflicting answers as to what the normal operating temperature should be on my 2006 e90 325i. Just had the water pump and thermostat replaced. The range seems to stay between 195-205. I live in Delaware so outside temperature right now ranges from mid 30's to 50's right now.

I was told this is normal temperature, I was told by another mechanic it should be down in the 185 range.

180-185F was for many years the desired norm. Not necessarily now - 240F typical, N54.

Your gauge may not be accurate!

Show up @ U o'D now and then.....where're best eats, Newark/Wilmington lately?
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Old 12-13-2012, 09:05 AM
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tturedraider tturedraider is offline
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Quote:
Originally Posted by CALWATERBOY View Post
180-185F was for many years the desired norm. Not necessarily now - 240F typical, N54.

Your gauge may not be accurate!

Show up @ U o'D now and then.....where're best eats, Newark/Wilmington lately?
Higher operating temps result in more complete fuel combustion, so they're the norm these days.
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Old 12-13-2012, 09:08 AM
rdorman rdorman is offline
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That is low. 220 - 240 would be more correct when fully warmed up.
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Old 12-13-2012, 09:16 AM
usaret usaret is offline
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Quote:
Originally Posted by robs540i View Post
I'm getting conflicting answers as to what the normal operating temperature should be on my 2006 e90 325i. Just had the water pump and thermostat replaced. The range seems to stay between 195-205. I live in Delaware so outside temperature right now ranges from mid 30's to 50's right now.

I was told this is normal temperature, I was told by another mechanic it should be down in the 185 range.
The engine temperature on N52's is controlled entirely by the DME and is varied. Yours seems just fine to me.
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Old 12-13-2012, 10:22 AM
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robs540i robs540i is offline
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Thanks for the posts, I was using a computer hooked up to the OBD, not using the cars temp guage, honestly don't even know how to pull that up...
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