[emaile]

At about how many miles should you change your water pump?

[Express]

mine went around 55,000.

you will get a code before it fails, but it will not trigger a service light so if you do not have a scanner you will not see it.

[emaile]

what was the code you got?

[Express]

Originally Posted by ENINTY

Okay, so I can't post my BT scan pages because I saved them to my shop computer as a doc image file and E90 post doesn't accept that file format.

Anyway here's synopsis of what happened and what codes are involved.

There is a faut code 2E81"Electrical Cooling Pump:Speed Deviation" that has shown up several times as follows:

May 14, 2011 Scan: (I cleared these codes after the scan)
Note: The pump's max RPM is 250
138053 miles - speed deviation of 54 RPM
138153 miles - speed deviation of 45 RPM
143447 miles - speed deviation of 19 RPM

June 11, 2011 Scan: (I cleared these codes after the scan)
143452 miles - speed deviation of 56 RPM
143467 miles - speed deviation of 74 RPM
145927 miles - speed deviation of 51 RPM

July 23, 2011 Scan (This scan was to clear the codes before I replaced the pump)
145952 miles - speed deviation of 87 RPM
145987 miles - speed deviation of 59 RPM
149521 miles - water pump revolution of 0 RPM (the pump stopped car overheated)
- speed deviation of 250 RPM

A second code was present: 2E82 "Electrical Cooling Pump: Switch Off"
149521 miles - water pump temperature electronics 77 deg C (170 F)

So basically, if you get code 2E81, replace the pump soon.

I hope this information helps all of us understand the water pump better.

hope this helps

[emaile]

Great thanks. I have a code for thermostat. I was told you might as well change the pump it's in the same area. That's why I was wondering if I should do it. I wasn't going to if the recommend mileage is 100,000 miles or something like that. I 'm at 61,000 miles right now. The odd thing is I have that code but my car doesn't overheat.

[Express]

the pump is not fun to change.

[cwn23]

Originally Posted by emaile

Great thanks. I have a code for thermostat. I was told you might as well change the pump it's in the same area. That's why I was wondering if I should do it. I wasn't going to if the recommend mileage is 100,000 miles or something like that. I 'm at 61,000 miles right now. The odd thing is I have that code but my car doesn't overheat.

It will sooner or later...My car went from giving a code to the second code and then two weeks later engine temp overheat and antifreeze all over the place...Its not simple to change it out either!