Is coolant flush absolutely necessary after water pump replacement?

Wolf 335 · 07-04-2013, 09:36 AM

I am having the pump replaced due to failure. Had the common red temp symbol and engine failsafe shut off.

Its CPO series, however thermostat is not covered and neither is the coolant flush.

So i told them to do the thermostat as well.

Dealer wants $150 for coolant flush (thats labout and parts).

Is the flush absolutely necessary or can i get away with just having them top off the coolant?

gzim335 · 07-04-2013, 09:40 AM

Quote:

Originally Posted by Wolf 335

I am having the pump replaced due to failure. Had the common red temp symbol and engine failsafe shut off.

Its CPO series, however thermostat is not covered and neither is the coolant flush.

So i told them to do the thermostat as well.

Dealer wants $150 for coolant flush (thats labout and parts).

Is the flush absolutely necessary or can i get away with just having them top off the coolant?

I just had my thermostat and water pump replaced under CPO and I'll I payed was $50,they did flush the Coolant also.
try another stealership

roadkillrob · 07-04-2013, 09:46 AM

Just taking the pump and thermostat out of the car will empty about 60-70% of the coolant, so as long as they are not re-using the old coolant and using new (which is about 20 bucks for the jug they will need), then you are mostly getting new coolant anyway - an extra $150 is a big rip!

Wolf 335 · 07-04-2013, 09:56 AM

thanks guys.

I called another dealership to check in regards to the thermostat being covered and they said that it is not covered under CPO. Only waterpump.

StealYourFace · 07-04-2013, 10:20 AM

If the stat isn't covered, pay for it out of pocket. Wouldn't it be a shame if the car needed a thermostat out of warranty?

Wolf 335 · 07-04-2013, 10:31 AM

A move well played by BMW to only cover waterpump and not thermostat, knowing that people usually get them both done at the same time.

All about the money grab.

Efthreeoh · 07-04-2013, 12:39 PM

Quote:

Originally Posted by roadkillrob

Just taking the pump and thermostat out of the car will empty about 60-70% of the coolant, so as long as they are not re-using the old coolant and using new (which is about 20 bucks for the jug they will need), then you are mostly getting new coolant anyway - an extra $150 is a big rip!

This is correct, and I'd even up the percentage to 95%. The pump is at the bottom of the cooling system, so you have to completely drain the system to remove the pump anyway. The only coolant that doesn't come out without some effort is in the block and it is not that much. It would be more effort for the shop to try and recover the coolant (i.e. keep it clean) than to just use new coolant.

Modern cars with aluminum engines do not need "flushing" of the cooling system. The BMW coolant change procedure does not call for "flushing" the system, but rather just draining it.

ellipsis212 · 07-04-2013, 02:19 PM

Ha ha. Coolant "flush" for an extra $150 after removing the water pump. That's f'ing hilarious! I'd be tempted to punch the SA in the face if he tried that shit with me.

Removing the hoses drains most of the coolant already and the rest comes out by unscrewing the radiator drain plug. This is standard op when replacing pump and t-stat.

crashoverride · 07-04-2013, 02:46 PM

How much is the dealership charging you for the water pump replacement?

krhodes1 · 07-04-2013, 02:48 PM

Quote:

Originally Posted by Wolf 335

A move well played by BMW to only cover waterpump and not thermostat, knowing that people usually get them both done at the same time.

All about the money grab.

I suspect that this issue is that technically, there is nothing wrong with the thermostat. They will not replace a part that is still functioning, "just because they are in there". If the thermostat failed and the water pump was still good, I suspect it would be the other way around.

An extra $150 to "flush" the coolant is silly though.

BEAR-AvHistory · 07-04-2013, 02:49 PM

Pay for what it takes to top it back up.

crashoverride · 07-04-2013, 02:51 PM

I was just reading a DIY guide here that talks about replacing the water ump only removes half the fluid and the pump must be working to replace all... http://www.e90post.com/forums/showth...ght=water+pump

Wolf 335 · 07-05-2013, 12:23 PM

Quote:

Originally Posted by crashoverride

How much is the dealership charging you for the water pump replacement?

Water pump was covered under CPO warranty. I just had to pay for the thermostat and $50 warranty deductible.

07-04-2013, 09:36 AM	#1
Wolf 335 Brigadier General 2341 Rep 3,539 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: GTA - Greater Toronto Area iTrader: (0)	Is coolant flush absolutely necessary after water pump replacement? I am having the pump replaced due to failure. Had the common red temp symbol and engine failsafe shut off. Its CPO series, however thermostat is not covered and neither is the coolant flush. So i told them to do the thermostat as well. Dealer wants $150 for coolant flush (thats labout and parts). Is the flush absolutely necessary or can i get away with just having them top off the coolant? Last edited by Wolf 335; 07-05-2013 at 12:20 PM..
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07-04-2013, 09:46 AM	#3
roadkillrob Major General 860 Rep 5,447 Posts Drives: 08 335i,22 X3M, 2012 C63 Black Join Date: Jul 2007 Location: Boston iTrader: (15)	Just taking the pump and thermostat out of the car will empty about 60-70% of the coolant, so as long as they are not re-using the old coolant and using new (which is about 20 bucks for the jug they will need), then you are mostly getting new coolant anyway - an extra $150 is a big rip! __________________ 2022 X3M Brooklyn Grey 2008 E93 335i FBO 2012 Mercedes C63 Black Series Alanite Grey
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07-04-2013, 09:56 AM	#4
Wolf 335 Brigadier General 2341 Rep 3,539 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: GTA - Greater Toronto Area iTrader: (0)	thanks guys. I called another dealership to check in regards to the thermostat being covered and they said that it is not covered under CPO. Only waterpump.
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07-04-2013, 10:20 AM	#5
StealYourFace Lieutenant Colonel 261 Rep 1,794 Posts Drives: F30 328i M 6mt, E36 M3 Join Date: Jul 2009 Location: Shakedown Street, Buffalo NY iTrader: (1)	If the stat isn't covered, pay for it out of pocket. Wouldn't it be a shame if the car needed a thermostat out of warranty? __________________
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07-04-2013, 10:31 AM	#6
Wolf 335 Brigadier General 2341 Rep 3,539 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: GTA - Greater Toronto Area iTrader: (0)	A move well played by BMW to only cover waterpump and not thermostat, knowing that people usually get them both done at the same time. All about the money grab.
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07-04-2013, 02:19 PM	#8
ellipsis212 Colonel 1618 Rep 2,161 Posts Drives: 2017 M3 Join Date: Jun 2009 Location: RVA iTrader: (5) Garage List 2018 BMW M3 [0.00]	Ha ha. Coolant "flush" for an extra $150 after removing the water pump. That's f'ing hilarious! I'd be tempted to punch the SA in the face if he tried that shit with me. Removing the hoses drains most of the coolant already and the rest comes out by unscrewing the radiator drain plug. This is standard op when replacing pump and t-stat.
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07-04-2013, 02:46 PM	#9
crashoverride Lieutenant 177 Rep 581 Posts Drives: na Join Date: Jul 2006 Location: na iTrader: (0)	How much is the dealership charging you for the water pump replacement?
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07-04-2013, 02:49 PM	#11
BEAR-AvHistory 2020 Z4 M40i - 2022 M4C Convt 3127 Rep 5,264 Posts Drives: 2020 Z4 M40i - 2022 M4C Convrt Join Date: Jun 2011 Location: Raleigh, NC - OIB, NC iTrader: (0) Garage List 1965 COBRA (FFR rep ... [8.57] 2023 Jeep Wrangler ... [9.50] 2009 Yamaha V-Star [0.00] Cars 2-BMW, 2-FORD, ... [0.00] 2023 Ford Expeditio ... [0.00] 2020 Z4 M40i [10.00] 2022 BMW M4C [7.25] 1998 FORD Ranger 4X4 [0.00]	Pay for what it takes to top it back up. __________________ Kevin Dravit Gray, Black Leather, Moonlight Roof, Red Calipers 2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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07-04-2013, 02:51 PM	#12
crashoverride Lieutenant 177 Rep 581 Posts Drives: na Join Date: Jul 2006 Location: na iTrader: (0)	I was just reading a DIY guide here that talks about replacing the water ump only removes half the fluid and the pump must be working to replace all... http://www.e90post.com/forums/showth...ght=water+pump
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