Help! Weird overheating issues!

mario939021 · 07-10-2013, 03:23 PM

Hello I have a 2006 325i E90 with 121.000 miles this last Sunday i went on a trip from LA to SF about 150 miles into the trip the amber then the red overheating light came on, the temp had risen from 96-98 C to 128 C. I stopped and turned off the car then in a few minutes i took off again and the amber low coolant light came on. I was able to drive another 100 miles slowly but every time i would begin to go uphill the car would overheat.

On the way back the problem was worse i was only able to drive 30 miles at a time and the car would overheat. I would stop wait for it to cool down and add coolant again and drive for another 30 miles only for the same thing to happen. The outside temp was 106 F. Once i entered the city again the car did not overheat for the rest of the 100 miles as the outside temp had dropped.

After turning the car off and back on after overheating i could hear the water pump making some noises and the car jerking a little. I also found it odd that i was loosing coolant but i can't find a leak. A couple of months ago i got a code for the thermostat and replaced it. Is my water pump the problem? And why does it only fail on long trips. It has happened before but only when traveling far.

Thank You

GoRomeo · 07-10-2013, 03:31 PM

Sorry to say this, but YES your water pump is gone! Freaks me out to hear this stories as I am at 107k miles and also last year I got SES light and error code I read was faulty thermostat supposedly. I guess my thermostat is now stucked open. I did not replace it as it does not causes any troubles, the only this is that engine may take longer to get to normal temps.

Start shopping around for water pump. Ive seen them around $350.00. Keep us posted.

RazRokz.! · 07-10-2013, 04:01 PM

http://www.ecstuning.com/BMW-E90-328...013/ES2574661/

Most affordable place to get a new water pump. Hit ECS up. They will take care of you...

GoRomeo · 07-10-2013, 04:05 PM

thanks for sharing...

scotty_miller · 07-10-2013, 08:02 PM

Just replaced mine yesterday..... Partsgeek.com got my oem pump overnighted and used promo code save15 and the total was 337.60

mario939021 · 07-11-2013, 03:52 PM

Thank you so much all of you, do you guys know if there's a difference between the Pierburg and BMW OEM?

GoRomeo · 07-11-2013, 03:59 PM

Quote:

Originally Posted by scotty_miller

Just replaced mine yesterday..... Partsgeek.com got my oem pump overnighted and used promo code save15 and the total was 337.60

Not bad... thanks again for sharing guys! Hopefully by the time I need one has come even lower in price...

scotty_miller · 07-11-2013, 04:04 PM

Quote:

Originally Posted by mario939021

Thank you so much all of you, do you guys know if there's a difference between the Pierburg and BMW OEM?

Pierburg is the company BMW uses to manufacture their pumps. If the op pulls his pump out he'll see it's stamped BMW with pierburg markings right on it

mario939021 · 07-11-2013, 04:06 PM

Does everyone know why coolant is lost? Because at one paint a lot of coolant was missing. Is the faulty pump leaking? Or do i really have a leak?

bhmax16 · 07-11-2013, 04:25 PM

If you can't visually see a leak it is best to pressure test the system to know for sure, however, it is normal to experience a loss of coolant while overheating

07-10-2013, 03:23 PM	#1
mario939021 New Member 0 Rep 13 Posts Drives: 2006 325i Sport Join Date: May 2012 Location: Lakewood, CA iTrader: (0)	Help! Weird overheating issues! Hello I have a 2006 325i E90 with 121.000 miles this last Sunday i went on a trip from LA to SF about 150 miles into the trip the amber then the red overheating light came on, the temp had risen from 96-98 C to 128 C. I stopped and turned off the car then in a few minutes i took off again and the amber low coolant light came on. I was able to drive another 100 miles slowly but every time i would begin to go uphill the car would overheat. On the way back the problem was worse i was only able to drive 30 miles at a time and the car would overheat. I would stop wait for it to cool down and add coolant again and drive for another 30 miles only for the same thing to happen. The outside temp was 106 F. Once i entered the city again the car did not overheat for the rest of the 100 miles as the outside temp had dropped. After turning the car off and back on after overheating i could hear the water pump making some noises and the car jerking a little. I also found it odd that i was loosing coolant but i can't find a leak. A couple of months ago i got a code for the thermostat and replaced it. Is my water pump the problem? And why does it only fail on long trips. It has happened before but only when traveling far. Thank You
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07-10-2013, 03:31 PM	#2
GoRomeo Brigadier General 1333 Rep 4,233 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [6.33] 2006 330i [6.75]	Sorry to say this, but YES your water pump is gone! Freaks me out to hear this stories as I am at 107k miles and also last year I got SES light and error code I read was faulty thermostat supposedly. I guess my thermostat is now stucked open. I did not replace it as it does not causes any troubles, the only this is that engine may take longer to get to normal temps. Start shopping around for water pump. Ive seen them around $350.00. Keep us posted.
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07-10-2013, 04:01 PM	#3
RazRokz.! Captain 21 Rep 551 Posts Drives: 07 BMW 328i Join Date: Aug 2011 Location: California iTrader: (0)	http://www.ecstuning.com/BMW-E90-328...013/ES2574661/ Most affordable place to get a new water pump. Hit ECS up. They will take care of you...
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07-10-2013, 04:05 PM	#4
GoRomeo Brigadier General 1333 Rep 4,233 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [6.33] 2006 330i [6.75]	thanks for sharing...
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07-10-2013, 08:02 PM	#5
scotty_miller Captain 193 Rep 940 Posts Drives: 2003.5 E46 M3 Join Date: May 2013 Location: Hollidaysburg, PA iTrader: (13)	Just replaced mine yesterday..... Partsgeek.com got my oem pump overnighted and used promo code save15 and the total was 337.60 __________________ You'll find me at the track BMW CCA Club Racing #905 Instagram: scottynotpippen
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07-11-2013, 03:52 PM	#6
mario939021 New Member 0 Rep 13 Posts Drives: 2006 325i Sport Join Date: May 2012 Location: Lakewood, CA iTrader: (0)	Thank you so much all of you, do you guys know if there's a difference between the Pierburg and BMW OEM?
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07-11-2013, 04:06 PM	#9
mario939021 New Member 0 Rep 13 Posts Drives: 2006 325i Sport Join Date: May 2012 Location: Lakewood, CA iTrader: (0)	Does everyone know why coolant is lost? Because at one paint a lot of coolant was missing. Is the faulty pump leaking? Or do i really have a leak?
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07-11-2013, 04:25 PM	#10
bhmax16 Lieutenant 168 Rep 398 Posts Drives: '22 M4, '23 CX-50 Join Date: Jul 2011 Location: North Carolina iTrader: (0)	If you can't visually see a leak it is best to pressure test the system to know for sure, however, it is normal to experience a loss of coolant while overheating
	Appreciate 0 Quote