[Wgosma]

Originally Posted by EndOfAnEra

Looks like I'll be doing a water pump and thermostat DIY this weekend

How many miles on that failed pump?
Thanks/Bill

[EndOfAnEra]

Originally Posted by Wgosma

How many miles on that failed pump?
Thanks/Bill

85k miles

[markcbr]

Good thread. I found this after my wife had the same symptoms - overheating notification and power loss. I got quotes from 2 BMW dealerships to replace water pump and thermostat - $2900 and 2000. I had and indie shop quote $700 for parts and 5 hrs labor.

Found this thread, saw the procedure and decided to go for it. Ordered the parts for $4xx. Install was a not bad but the hoses like most people stated were difficult to remove. One thing that helped was going behind the front axel. I didn't realize I had access from that area but it really helped. The hose clips were new to me. Had to search how to remove them. Took my time and I finished in about 6 hrs.

2014 X3 xDrive35i with 60k miles.

[ComingInHot]

2013 X3 35i 51k miles just had this happen as well. Water pump and thermostat changed at dealer $1800. Not bad for the first repair needed in 11 years of ownership.

[heticor]

here a good video to follow

[Weslsew]

I just replaced the thermostat only in my F25 N55 after putting it off for months because of all the horror stories I read on here. I had the water pump replaced under the extended warranty at 83k miles but they wouldn't do the thermostat because it was still working. 10k miles later and after the warranty was up, the thermostat failed, stuck open.

I just wanted to post and say that doing the thermostat only is not that bad at all and took me about an hour and a half.

There are 4 hoses on the thermostat - two quick connect on the front and two traditional/worm gear hoses on the top and rear. I only removed the fan and the intake pipe on the passenger side of the engine. (Not even sure the intake pipe needed to come off, but it let me see much better what I was working with). The small quick connect hose came off easily, as did the rear large hose. The front quick connect was stuck on, and I couldn't really get to the small hose on the top. So, I just removed the other end of the large quick connect hose from the radiator and removed the thermostat with both the large quick connect and the small traditional hose still attached. There's just enough room between the water pump and the turbo/IC pipe to squeeze it out the front. Once I had it out it was easy to remove the two hoses and swap the top hose over to the new thermostat. I struggled for about 20 minutes trying to get the small quick connect hose onto the new thermostat - I just couldn't get it lined up and pushed all the way on. I was thinking that the coolant everywhere was enough lubrication, but when I finally put some oil on the hose and thermostat fitting, it popped right on effortlessly. Had I oiled it up to start, this job would have only taken about an hour. I used oil on the large quick connect as well and that one popped on the new thermostat with ease, so that's my biggest tip.