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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 01-01-2009, 05:30 PM   #21
DiceyOne
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excellent DIY, paraklas. I plan on doing this in the spring as some preventative maintenance. I will no doubt be referring to this thread as a guide.
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Old 01-02-2009, 04:11 PM   #22
paraklas
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And in case somebody is wondering what sound a faulty wp does, here it is (notice the hishhhhh hishhhhh hishhhhh):

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Old 01-02-2009, 04:19 PM   #23
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^ how many miles before you started hearing that from your pump? i want to get the stewart pump but dont want to if i dont have to.
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Old 01-02-2009, 04:54 PM   #24
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Old 01-03-2009, 12:17 PM   #25
itscoo2pyopants
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wow i got 90k, probably should replace it.
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Old 01-03-2009, 03:02 PM   #26
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thanks

take note I must change the tires when the car return to the road as after 4 years, thet are all cracked on the edge. (did not run enough) goodyear gsd3.
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Old 01-04-2009, 07:59 PM   #27
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Quick question - thermostat

Paraklas: Awesome DYI!
I have a quick question...while removing the expansion tank I broke the thermostat plastic...I just ordered the part, however, it seems that there is still a piece of the old thermostat plastic where the expansion tank connects from the bottom...can you let me know how to remove it?
thanks!!!
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Old 01-05-2009, 04:31 AM   #28
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Can you post a pic of what you are refering into? The thermostat is not connected to the bottom part of the exp.tank.
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Old 01-05-2009, 05:37 AM   #29
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This is going to help me SO much come springtime, thanks for a great writeup.
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Old 01-05-2009, 07:58 AM   #30
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Quote:
Originally Posted by paraklas View Post
Can you post a pic of what you are refering into? The thermostat is not connected to the bottom part of the exp.tank.
he probably has an auto. there is a small thermostat that leads to the trans.
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Old 01-05-2009, 09:14 AM   #31
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Here are the pics....

The red rectangle on picture one (pretty faint) shows where the piece (in picture two) broke off. Picture 2 shows what seems to be a thermostat and a spring...your help is very appreciated...
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Old 01-05-2009, 03:33 PM   #32
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Unhappy more information

Gents,

Attached a picture on how the thermostat used to go. I was able to place it back but it does not feel real secure (it will surely come off with regular driving). So, given that the part is broken (both the plastic on the thermostat and on the mounting plate - I believe that is the plastic part that holds the thermostat and also the expansion tank, # 1 on the following diagram:
http://www.realoem.com/bmw/showparts...41&hg=17&fg=05 - do I have to also replace the mounting plate?

That seems like a JOB....and will probably require for me to take the radiator completely out...any of you done this?

thanks for your help!
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Old 01-06-2009, 03:47 PM   #33
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This is quite possibly the best write-up that I have ever seen.
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Old 01-07-2009, 05:05 PM   #34
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Great write up Paraklas!

I start first thing tomorrow morning. Stewart water pump, new UUC under pulleys & belt, thermostat, belt tensioner and new hoses. Should be quite a day.
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Old 01-08-2009, 03:44 AM   #35
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Originally Posted by jabast09 View Post
The red rectangle on picture one (pretty faint) shows where the piece (in picture two) broke off. Picture 2 shows what seems to be a thermostat and a spring...your help is very appreciated...
No idea as I don't have an auto and therefore these parts are not in my car.

Good luck!
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Old 01-08-2009, 11:29 AM   #36
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nice work
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Old 01-08-2009, 01:08 PM   #37
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Quote:
3. Go below car and remove expansion tank drain plug (blue) and let the coolant drain in a bucket. Do not allow pets in the area, coolant is sweet and if your dog drinks it, he will die.


great DIY.
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Old 01-09-2009, 08:16 PM   #38
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nice writeup
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Old 01-13-2009, 05:26 PM   #39
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Thermostat housing is leaking now. Anybody knows if it's repairable using gasket silicone (like the one used for valve cover gasket) or do I need to change the entire unit.
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Old 01-13-2009, 05:46 PM   #40
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Originally Posted by paraklas View Post


Thermostat housing is leaking now. Anybody knows if it's repairable using gasket silicone (like the one used for valve cover gasket) or do I need to change the entire unit.
Why you asking us? You wrote this DIY so you're supposed to be the expert.

BTW - Great DIY Paraklas! I followed it almost point for point except the fact I have an automatic and besides installing the Stewart water pump, thermostat, expansion tank, belt tensioner, new hoses and belts I was also installing a new under pulley system. Couldn't have done it without your great write up. Thanks....
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