Replacing thermostat at 80k... what else?

tc535i · 04-28-2015, 11:08 AM

Hey guys, I need to change my thermostat (due to a persistent CEL and 2EF4 code http://www.e90post.com/forums/showthread.php?t=1046096). Water pump was done 25k ago so I don't want to do it again. Car is currently at 80k, what else should I be changing? Hoses? Radiator? Expansion tank?

335NJ · 04-28-2015, 11:29 AM

That's not real high mileage, but I'd definitely do a full visual inspection of all the cooling components. Hoses, etc.

tc535i · 04-28-2015, 11:31 AM

I think hoses are usually an internal failure, best way to test is squeeze and if you feel crunching the inside is falling apart. Not many ways that I know to test hoses otherwise?

335NJ · 04-28-2015, 11:32 AM

Quote:

Originally Posted by tc535i

I think hoses are usually an internal failure, best way to test is squeeze and if you feel crunching the inside is falling apart. Not many ways that I know to test hoses otherwise?

I just meant to look for any cracks, deterioration, etc.

tc535i · 04-28-2015, 11:33 AM

yeah, I'll definitely be checking the radiator neck for beginnings of hairline fractures, where else do these things fail?

hoopvillian · 04-28-2015, 07:21 PM

Anywhere there's hard plastic is a failure point. I was changing my vacuum lines and every piece of the cooling system I touched crumbled. I'm at 130k.

tc535i · 05-26-2015, 12:27 PM

Hmm... Got a low coolant message, and the reservoir was down quite a bit.

Guess I'm changing everything.

Does anybody have a link to a good DIY parts list? I'd like to be sure I get everything in the first order, don't want to have my car on stands for a week waiting for that last hose I forgot etc

04-28-2015, 11:08 AM	#1
tc535i Lieutenant Colonel 217 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	Replacing thermostat at 80k... what else? Hey guys, I need to change my thermostat (due to a persistent CEL and 2EF4 code http://www.e90post.com/forums/showthread.php?t=1046096). Water pump was done 25k ago so I don't want to do it again. Car is currently at 80k, what else should I be changing? Hoses? Radiator? Expansion tank?
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04-28-2015, 11:29 AM	#2
335NJ Colonel 533 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	That's not real high mileage, but I'd definitely do a full visual inspection of all the cooling components. Hoses, etc.
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04-28-2015, 11:31 AM	#3
tc535i Lieutenant Colonel 217 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	I think hoses are usually an internal failure, best way to test is squeeze and if you feel crunching the inside is falling apart. Not many ways that I know to test hoses otherwise?
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04-28-2015, 11:33 AM	#5
tc535i Lieutenant Colonel 217 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	yeah, I'll definitely be checking the radiator neck for beginnings of hairline fractures, where else do these things fail?
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04-28-2015, 07:21 PM	#6
hoopvillian Private First Class 21 Rep 178 Posts Drives: 335i Join Date: Apr 2010 Location: Dago iTrader: (0)	Anywhere there's hard plastic is a failure point. I was changing my vacuum lines and every piece of the cooling system I touched crumbled. I'm at 130k.
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05-26-2015, 12:27 PM	#7
tc535i Lieutenant Colonel 217 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	Hmm... Got a low coolant message, and the reservoir was down quite a bit. Guess I'm changing everything. Does anybody have a link to a good DIY parts list? I'd like to be sure I get everything in the first order, don't want to have my car on stands for a week waiting for that last hose I forgot etc
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