defective water pump - BMW 3-Series (E90 E92) Forum

phatpat187 · 09-08-2005, 05:10 PM

I have owned my 330i (sports package, cold weather package, I-Drive) for about 3 months and it has almost 5000 miles on it.

While driving very moderatly around town (after a couple days of hard driving on the German autobahn) the I-Drive warned me the engine was overheating and told me to shut the engine off. We made it to the BMW dealer and I had a defective water pump. The mechanic said it was nothing that I did, just a defective pump. They got the part the next morning and replaced it and it's been working fine since.

Has anyone else had this problem or know much about it?

David325Australia · 09-08-2005, 06:26 PM

I haven't heard about this until I read you post. Thankfully no harm done to your car and you were back on the road again as quickly as possible.

Mechanical devices will fail, no matter how well built they are.

ZenDriver · 09-08-2005, 06:43 PM

This reminds me of the E36 which was originally released with a "Fiber" (read: plastic) water pump impeller which was known to spin free on the shaft after 50k miles. They finally replaced it with a metal impeller around MY96 and superceeded the part. Let's also not forget the plastic water pump housing that was known to crack and the radiator hose necks that would fall off at 80k miles.

Plastic has no place in the engine's cooling channles.

phatpat187 · 09-11-2005, 01:59 PM

thanks for the reassurance, and i guess we all have to accept that things do break sometimes

09-08-2005, 05:10 PM	#1
phatpat187 330i, Monaco Blue, Terra, Sports, Winter, I-Drive Drives: 2006 BMW 330i Join Date: Aug 2005 Location: Würzburg, Germany Posts: 6 iTrader: (0)	defective water pump I have owned my 330i (sports package, cold weather package, I-Drive) for about 3 months and it has almost 5000 miles on it. While driving very moderatly around town (after a couple days of hard driving on the German autobahn) the I-Drive warned me the engine was overheating and told me to shut the engine off. We made it to the BMW dealer and I had a defective water pump. The mechanic said it was nothing that I did, just a defective pump. They got the part the next morning and replaced it and it's been working fine since. Has anyone else had this problem or know much about it?

09-08-2005, 06:26 PM	#2
David325Australia Lieutenant Colonel Drives: E90 325i 6sp Auto Join Date: Jun 2005 Location: Melbourne Australia Posts: 1,833 iTrader: (0)	I haven't heard about this until I read you post. Thankfully no harm done to your car and you were back on the road again as quickly as possible. Mechanical devices will fail, no matter how well built they are. __________________ Jet Black E90 325i Step, heated black leather seats, dark wood trim, sports suspension, 17" 161 style mixed tyres, sun roof, sports steering wheel, logic 7, business nav.

09-11-2005, 01:59 PM	#4
phatpat187 330i, Monaco Blue, Terra, Sports, Winter, I-Drive Drives: 2006 BMW 330i Join Date: Aug 2005 Location: Würzburg, Germany Posts: 6 iTrader: (0)	thanks thanks for the reassurance, and i guess we all have to accept that things do break sometimes

09-08-2005, 06:43 PM	#3
ZenDriver Do Not Taunt Zen Driver. Drives: 325i w/ MT, ZSP in Graphite Join Date: Aug 2005 Location: Portland, OR Posts: 466 iTrader: (0)	This reminds me of the E36 which was originally released with a "Fiber" (read: plastic) water pump impeller which was known to spin free on the shaft after 50k miles. They finally replaced it with a metal impeller around MY96 and superceeded the part. Let's also not forget the plastic water pump housing that was known to crack and the radiator hose necks that would fall off at 80k miles. Plastic has no place in the engine's cooling channles.