BIG Problem Water Pump Help

u2usual · 03-17-2011, 08:29 AM

Okay so here is the deal, I have a 2007 E92 335I with 37k miles. I had to get the radiator changed out. So I got everything done and poured in new fluid trying to pump the air out of the system. Letting the air out through the screw by the coolant reservoir cap. Spent the whole day doing that but the heater doesn't blow hot air and after 20min the overheating indicator will turn on in yellow then in red. The car will go into limp mode. I started off by changing the thermostat, nothing. I ran the car on the scanner, and it seems like the water pump will not turn on through the system. Checked the connectors and we are getting two negatives and one positive feed. What could this be? Bad fuse or relay? Low battery power? Cut somewhere in the line? Any help would be appreciated. Thanks guys.

u2usual · 03-17-2011, 08:37 AM

Also is there a fuse or relay for the water pump?

Kevin@AKMotorwerk · 03-17-2011, 08:43 AM

Quote:

Originally Posted by u2usual

Okay so here is the deal, I have a 2007 E92 335I with 37k miles. I had to get the radiator changed out. So I got everything done and poured in new fluid trying to pump the air out of the system. Letting the air out through the screw by the coolant reservoir cap. Spent the whole day doing that but the heater doesn't blow hot air and after 20min the overheating indicator will turn on in yellow then in red. The car will go into limp mode. I started off by changing the thermostat, nothing. I ran the car on the scanner, and it seems like the water pump will not turn on through the system. Checked the connectors and we are getting two negatives and one positive feed. What could this be? Bad fuse or relay? Low battery power? Cut somewhere in the line? Any help would be appreciated. Thanks guys.

did you test the water pump itself? its common for them to go bad. i believe it has two negatives because it runs on two speeds and it also circulates after the car is shut off to cool the turbos.

Bcube · 03-17-2011, 10:00 AM

It sounds like your system is full of air. There is a BMW procedure in the DIY section on how to vent the air out of the coolant system. I would start here first.

The Venting procedure will turn on your electric water pump. You will clearly hear it. That will tell you if you have a waterpump (no power/seized) issue right off.

Kevin@AKMotorwerk · 03-17-2011, 10:01 AM

Quote:

Originally Posted by Bcube

It sounds like your system is full of air. There is a BMW procedure in the DIY section on how to vent the air out of the coolant system.

i think the problem is his pump wont turn on, so the bleeding procedure won't work or do any good anyway

Bcube · 03-17-2011, 03:16 PM

Could be. Anytime someone starts a sentence with "I had to get the radiator changed out.", you know there is more to the story.

u2usual · 03-17-2011, 09:51 PM

Well it tuned out to be a bad circuit in the system. All fixed now.

vallejoricky84 · 09-17-2012, 08:33 PM

What is it exactly that you changed or fixed. I am having the same problem and would like to know if you could be more specific. If you would like to help just reply here or email me vallejoamen@aol.com I was about to change the water pump but this gave some hopes

Alhaji igi · 09-02-2015, 04:01 PM

I just had an issue with my fan belt, when I changed it my car started over heating later I discover the water pump has failed. Pls help guys. What might have caused the problem..

03-17-2011, 08:29 AM	#1
u2usual First Lieutenant 60 Rep 340 Posts Drives: E46 M3 & F80 M3 Join Date: Jan 2010 Location: Windermere FL iTrader: (1)	BIG Problem Water Pump Help Okay so here is the deal, I have a 2007 E92 335I with 37k miles. I had to get the radiator changed out. So I got everything done and poured in new fluid trying to pump the air out of the system. Letting the air out through the screw by the coolant reservoir cap. Spent the whole day doing that but the heater doesn't blow hot air and after 20min the overheating indicator will turn on in yellow then in red. The car will go into limp mode. I started off by changing the thermostat, nothing. I ran the car on the scanner, and it seems like the water pump will not turn on through the system. Checked the connectors and we are getting two negatives and one positive feed. What could this be? Bad fuse or relay? Low battery power? Cut somewhere in the line? Any help would be appreciated. Thanks guys. __________________ Romans 3:23 2002 BMW M3 Racecar 2017 BMW M3 F80
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03-17-2011, 08:37 AM	#2
u2usual First Lieutenant 60 Rep 340 Posts Drives: E46 M3 & F80 M3 Join Date: Jan 2010 Location: Windermere FL iTrader: (1)	Also is there a fuse or relay for the water pump? __________________ Romans 3:23 2002 BMW M3 Racecar 2017 BMW M3 F80
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03-17-2011, 10:00 AM	#4
Bcube Been there, wrecked that. 18 Rep 547 Posts Drives: '07 E93 335i Join Date: Jul 2009 Location: SoCal iTrader: (0)	It sounds like your system is full of air. There is a BMW procedure in the DIY section on how to vent the air out of the coolant system. I would start here first. The Venting procedure will turn on your electric water pump. You will clearly hear it. That will tell you if you have a waterpump (no power/seized) issue right off. __________________ -Brian ~199K miles. I -still- don't fear my 335i. Last edited by Bcube; 03-17-2011 at 10:06 AM..
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03-17-2011, 03:16 PM	#6
Bcube Been there, wrecked that. 18 Rep 547 Posts Drives: '07 E93 335i Join Date: Jul 2009 Location: SoCal iTrader: (0)	Could be. Anytime someone starts a sentence with "I had to get the radiator changed out.", you know there is more to the story. __________________ -Brian ~199K miles. I -still- don't fear my 335i.
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03-17-2011, 09:51 PM	#7
u2usual First Lieutenant 60 Rep 340 Posts Drives: E46 M3 & F80 M3 Join Date: Jan 2010 Location: Windermere FL iTrader: (1)	Well it tuned out to be a bad circuit in the system. All fixed now. __________________ Romans 3:23 2002 BMW M3 Racecar 2017 BMW M3 F80
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09-17-2012, 08:33 PM	#8
vallejoricky84 New Member 0 Rep 12 Posts Drives: BMW 328i Join Date: May 2012 Location: Chicago iTrader: (0)	I need your help What is it exactly that you changed or fixed. I am having the same problem and would like to know if you could be more specific. If you would like to help just reply here or email me vallejoamen@aol.com I was about to change the water pump but this gave some hopes
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09-02-2015, 04:01 PM	#9
Alhaji igi Registered 0 Rep 1 Posts Drives: salon Join Date: Aug 2015 Location: nigeria iTrader: (0)	Water pump failure I just had an issue with my fan belt, when I changed it my car started over heating later I discover the water pump has failed. Pls help guys. What might have caused the problem..
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