Doing a cooling system overhaul, any good DIY/parts lists out there?

tc535i · 05-27-2015, 07:30 PM

Long story short: Car's at 80k, got new water pump at ~50k warrantied but they didn't change anything else. Getting CEL and 2EF4 thermostat code, and got a low coolant light the other day (and it was a big down) so I figure it's time for an overhaul.

What should I be replacing? Radiator, hoses, belts, idler pullies, ???? Would really appreciate some insight from someone that's been down that road before me, and a link to a good DIY and especially a parts list would be even better. Thanks!

335NJ · 05-27-2015, 08:19 PM

http://www.ecstuning.com/BMW-E90-335...ooling_System/

tc535i · 05-28-2015, 11:16 AM

Quote:

Originally Posted by 335NJ

http://www.ecstuning.com/BMW-E90-335...ooling_System/

That's a good list, but do you really think I need to replace the water pump if it has just under 30k?

n54gte · 05-28-2015, 11:29 AM

Up to you. Pumps can fail anytime but if u recently got one warrantied, just get the thermostat and maybe hoses

tc535i · 05-28-2015, 11:34 AM

So you don't think I should be replacing the 8 year old, 80,000 mile expansion tank?

05-27-2015, 07:30 PM	#1
tc535i Lieutenant Colonel 223 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	Doing a cooling system overhaul, any good DIY/parts lists out there? Long story short: Car's at 80k, got new water pump at ~50k warrantied but they didn't change anything else. Getting CEL and 2EF4 thermostat code, and got a low coolant light the other day (and it was a big down) so I figure it's time for an overhaul. What should I be replacing? Radiator, hoses, belts, idler pullies, ???? Would really appreciate some insight from someone that's been down that road before me, and a link to a good DIY and especially a parts list would be even better. Thanks!
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05-27-2015, 08:19 PM	#2
335NJ Colonel 538 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	http://www.ecstuning.com/BMW-E90-335...ooling_System/
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05-28-2015, 11:29 AM	#4
n54gte Lieutenant 42 Rep 537 Posts Drives: prius Join Date: Jun 2012 Location: north korea iTrader: (0)	Up to you. Pumps can fail anytime but if u recently got one warrantied, just get the thermostat and maybe hoses
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05-28-2015, 11:34 AM	#5
tc535i Lieutenant Colonel 223 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	So you don't think I should be replacing the 8 year old, 80,000 mile expansion tank?
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