e34 Touring

[Boris3]

And I thought the plastic pipe on the m42 block was a stupid design flaw. The whole e34 plastic aux pump thing looks like a failure point just waiting to happen. Glad you didn't trash the engine.

[straight6pwr]

i suppose the marketing wankateers at BMW thought the owners deserved INSTANT hot air in the cabin and this was their extra-complicated way of providing that.

[RobZR]

You ain't seen nothing yet.

Take the 4 screws off the pump head and see the marvel of German engineering. A magnetic coupled impeller driven through a clear polycarbonate cup. 

Who had the bright idea to think this would last?

I had one wear through the clear plastic cup and fail in a steaming pile like yours. Bypassed by connecting the broken hose to the heater valve input and haven't noticed any difference.

[straight6pwr]

RobZR said:

You ain't seen nothing yet.

Take the 4 screws off the pump head and see the marvel of German engineering. A magnetic coupled impeller driven through a clear polycarbonate cup. 

Who had the bright idea to think this would last?

I had one wear through the clear plastic cup and fail in a steaming pile like yours. Bypassed by connecting the broken hose to the heater valve input and haven't noticed any difference. 

i've never actually heard of a mag-drive pump before, pretty cool idea. but, yeah, research suggests that it adds more complexity, size and cost for a slight uptick in leak resistance of the seals, which seems unnecessary here.

[jc43089]

I was under the impression that the aux pump was to provide hot coolant to the heater core after a shutdown so you can run the heat for a while after shutting the car off.  I don't think it has any function for the cooling of the engine.  I removed one on an e32 because it was leaking.

[m42b32]

Maybe not ideal circumstances to run into each other, but it was fun catching up for a second! I'm glad you made it home without too much of a struggle

[straight6pwr]

jc43089 said:

I was under the impression that the aux pump was to provide hot coolant to the heater core after a shutdown so you can run the heat for a while after shutting the car off.  I don't think it has any function for the cooling of the engine.  I removed one on an e32 because it was leaking.

i was thinking it was to get the hot coolant circulated through the heater core as fast as possible, but your scenario makes sense. I'll have to listen to the pump to see if it runs with the car off and the heat on. with how much heat these engines make, you could probably crank warm air through the vents for hours.

[straight6pwr]

welp, I finished some projects finally.

i used a 3rd cluster to steal the display LCD and finally got the cluster 100% working again

glued one of the door panels back together

got the ebrake unseized

new console surround installed

aux pump and heater valve rebuilt and installed in the car. new coolant added.

Steering components 100% replaced. new idler arm, new tie rods, new center drag link. 55mph shimmy is finally gone again. 

the remaining three brake calipers (replaced one in spring) all seems to be at different levels of 'stuck', so I just replaced everything.

bottom of the ocean or winter wisconsin car? I think the partial seizing led to extra heat which accelerated the rust on these. 

before:

new parts:

after:

then, I took some pictures to be used for selling the car:

then, before I could blink, the car was sold. gonna miss this one, we had a lot of great adventures.

/thread

[m42b32]

One of my favorite wagons. Congrats on the sale, whats next??

[B C]

You’ve done well with this E34 and seem to have gotten some great use out of it. How long was it listed before it sold?

[straight6pwr]

Some other wagon will be next if things go as planned. 

I didn't even have to list the car, actually. Responded to a wanted ad.

[YoungCR]

Congrats on the sale! Gonna miss this car too.

[Jdesign]

Congrats. Cant wait to see whats next!