Confession. I never changed the water pump and thermostat. - Page 2 - E46Fanatics E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 09-05-2017, 05:16 PM   #21
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)
Thanks for the tips. My order at FCP was entered last night.
I got 2 Rein hoses, Wahler thermostat, Salieri pump, and BMW coolant.

Manolito, what bad experience did you have with non-BMW coolant?

Last edited by OnTheFence; 09-05-2017 at 05:16 PM.
OnTheFence is offline   Reply With Quote
Old 09-05-2017, 08:22 PM   #22
Mariner05
Registered User
 
Join Date: Mar 2014
Location: MN
Posts: 172
My Ride: 2005 325xi
Depending on where you live, I suggest applying WDE46's RTV fix to your new thermostat before installing it.

Read WDE46's link here: https://forum.e46fanatics.com/showthr...hermostat+leak

I'm in Minnesota, and whether I just had a run of not-so-good Wahler T-stats, or perhaps the cold weather going to hot, I cannot say. I replaced my already replaced-by-me Wahler T-stat two times in less than one year because of small, but noticeable leaks at the thermistor sensor. When the third one sprang the leak I was motivated enough to read all the threads and saw WDE46's. My newest T-stat has now been in about 3500 miles and is bone dry with no dried coolant residues. I saved the last T-stat that leaked, since I now know how to make it right.

Thanks, WDE46 !

Mariner05

Last edited by Mariner05; 09-05-2017 at 08:23 PM.
Mariner05 is offline   Reply With Quote
Old 09-05-2017, 08:49 PM   #23
jmo69
Registered User
 
Join Date: Mar 2013
Location: Wisconsin
Posts: 5,861
My Ride: 03 325xi 98 328is
Quote:
Originally Posted by Mariner05 View Post
Depending on where you live, I suggest applying WDE46's RTV fix to your new thermostat before installing it.

Read WDE46's link here: https://forum.e46fanatics.com/showthr...hermostat+leak

I'm in Minnesota, and whether I just had a run of not-so-good Wahler T-stats, or perhaps the cold weather going to hot, I cannot say. I replaced my already replaced-by-me Wahler T-stat two times in less than one year because of small, but noticeable leaks at the thermistor sensor. When the third one sprang the leak I was motivated enough to read all the threads and saw WDE46's. My newest T-stat has now been in about 3500 miles and is bone dry with no dried coolant residues. I saved the last T-stat that leaked, since I now know how to make it right.

Thanks, WDE46 !

Mariner05
I've got a Wahler stat that's been in since late 2014 and has some residue, the one it replaced was just under two years old. That one soft failed and threw the P0128 code. My Meyle water pump has been in since early 2013 and going strong, the Graf in my e36 is older and still going strong.
OP Mark your belts so they go on in the same direction they came off.
__________________
Alternative to expensive xi control arm bushings
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Bad outer xi ball joint?
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by jmo69; 09-05-2017 at 08:50 PM.
jmo69 is offline   Reply With Quote
Old 09-13-2017, 07:42 AM   #24
pgib8
Registered User
 
Join Date: Dec 2016
Location: NC
Posts: 329
My Ride: e46
i want to confess too, i had both my water pump and thermostat out of the car on separate occasions and i thought to myself, i might as well put in new ones, and then i thought, nah and installed the old ones back in. 116k
pgib8 is offline   Reply With Quote
Old 09-13-2017, 12:48 PM   #25
Alex323Ci
OEM ///PLUS
 
Alex323Ci's Avatar
 
Join Date: Jan 2005
Location: Huntington Beach -Surf City USA
Posts: 23,246
My Ride: M3 & 323Ci (sold)
Quote:
Originally Posted by pgib8 View Post
i want to confess too, i had both my water pump and thermostat out of the car on separate occasions and i thought to myself, i might as well put in new ones, and then i thought, nah and installed the old ones back in. 116k
I would not suggest doing this. The water pump and t-stat are scheduled maintenance items. They are not meant to last life of car. They are scheduled to be replaced before they fail.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
OE CSL WHEELS - OE CSL BRAKES - OE AUTOFLD MIRRORS - CSL RACK - CSL TRUNK - CSL DIFFUSER - AA TUNE - AA PULLEYS - AS 40% SSK - BILSTEIN PSS9s
CF CSL LIP - NAV- BMWP CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - SUPERSPRINT - UUC S/S LINES, RTABs - H&R SWAYS - 4.10 M-SPORT DIFF
Alex323Ci is offline   Reply With Quote
Old 09-14-2017, 05:43 PM   #26
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)
Quote:
Originally Posted by pgib8 View Post
i want to confess too, i had both my water pump and thermostat out of the car on separate occasions and i thought to myself, i might as well put in new ones, and then i thought, nah and installed the old ones back in. 116k
Why did you have the WP and Thermostat out ?:
OnTheFence is offline   Reply With Quote
Old 09-15-2017, 04:07 AM   #27
jeng
Registered User
 
Join Date: Aug 2016
Location: New Jersey
Posts: 43
My Ride: 2001 BMW 330ci
I thought this video was helpful for changing the water pump. He also has one for the thermostat too:

jeng is offline   Reply With Quote
Old 09-23-2017, 11:53 AM   #28
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)
Quote:
Originally Posted by GhostFlame View Post
Water pump + thermostat can be done in 1 hour. It stupid easy.
Nothing is every stupid easy for me.
I have set aside the rest of the weekend for this.
OnTheFence is offline   Reply With Quote
Old 09-23-2017, 11:54 AM   #29
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)
Quote:
Originally Posted by jmo69 View Post
OP Mark your belts so they go on in the same direction they came off.
Can you elaborate? Why is this necessary?
OnTheFence is offline   Reply With Quote
Old 09-23-2017, 12:58 PM   #30
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)
Just rewatched a bunch of videos as pre-game.

BIMMER ZEIT does not loosen that Vanos bracket.
He just unbolts and removes the thermostat.
50sKid does loosen the bracket.
That is not needed, like 50sKid did, right?

I think the thermostat gasket leaks when people over tighten it.
Just like a valve cover gasket. It fails sealing when it's compressed.
I will not use RTV, and I will make sure to not overtighten.
OnTheFence is offline   Reply With Quote
Old 09-23-2017, 01:04 PM   #31
jmo69
Registered User
 
Join Date: Mar 2013
Location: Wisconsin
Posts: 5,861
My Ride: 03 325xi 98 328is
Quote:
Originally Posted by OnTheFence View Post
Can you elaborate? Why is this necessary?
Just something I've heard of. I imagine the belt can wear running in one direction and reversing it could cause issues. Better safe than sorry. This is from an Autozone site so take it for what it's worth, but about halfway down the page it specifies reinstalling the old belt in the same direction it came off. http://www.autozone.com/repairguides...00c152801b22fb
__________________
Alternative to expensive xi control arm bushings
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Bad outer xi ball joint?
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by jmo69; 09-23-2017 at 01:13 PM.
jmo69 is offline   Reply With Quote
Old 09-23-2017, 01:19 PM   #32
jmo69
Registered User
 
Join Date: Mar 2013
Location: Wisconsin
Posts: 5,861
My Ride: 03 325xi 98 328is
It's been a while since I did the stat on my m54 and I don't remember taking any brackets off. My m52 requires the lifting hook to be removed because one of the bolts holding it goes through the housing.
__________________
Alternative to expensive xi control arm bushings
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Bad outer xi ball joint?
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
jmo69 is offline   Reply With Quote
Old 09-24-2017, 09:54 AM   #33
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)



330i has 110k and both were original from 2001.
Impeller was in perfect condition. Water pump bearing seemed fine. No wobble at all.
Thermostat was working perfectly.
In highsight, and all during the repair, I was saying I should have just left it alone.
Probably did not need to do this.



Took me over 4 hours from start to finish.
This one was way harder than it was supposed to be.
1) Hoses were nearly impossible separate from the radiator.
2) Pulley was fused to the water pump. Took forever to remove
3) Water pump was PITA to remove. Removal bolt threads were mucked, and WP still stuck when they were bottomed out.
4) Water pump was hard to push back into place. Had to eventually bolt it down to get it to seat.

I contemplated just leaving the 2 old radiator hoses, but it sucks to buy parts, not use them, and reinstall old ones.
The new pats would mock me from the shelf every time I went in the garage. Pussy!
It was now or never. Pry bar was nearly impossible to use, since everything is plastic.
The worst case is to break the existing part, and not be able to install the new part.
I had to keep yanking for like 15 mins straight until they gave.

Oh, and I mixed blue coolant with green. LOL.

Here are some tips for the next guy:

For the lower radiator hose, once I got some movement, I used a screwdriver to pry it off a little more.


In summary,
  1. Jack the car (Always 15 mins right there)
  2. Removing the undertray
  3. Remove airbox
  4. Remove fan
  5. Remove upper and lower hose (over an hour?)
  6. Did not need to loosen engine lift bracket
  7. Remove thermostat
  8. Pulley bolts (loosen)
  9. Detach belt
  10. Remove pulley
  11. Remove water pump
  12. Replace all.
  13. Bleeding,
  14. Test drive (making sure the 'stat goes from 96C to 93C)

Next day:
  • Top off coolant. Check for leaks.
  • Jack car.
  • Reinstall the undertray

Last edited by OnTheFence; 01-19-2018 at 05:42 PM.
OnTheFence is offline   Reply With Quote
Old 09-24-2017, 10:16 AM   #34
jmo69
Registered User
 
Join Date: Mar 2013
Location: Wisconsin
Posts: 5,861
My Ride: 03 325xi 98 328is
I understand the part about if it ain't broke, don't fix it but if you have the parts you just do it. My biggest fear about radiator hoses is breaking the necks on the radiator. The 4 hours isn't necessarily a bad thing, it just means you paid attention to details and didn't rush. I'm sure you'll get some flack about your coolant choice, but not from me. You just have fewer things to worry about now.
__________________
Alternative to expensive xi control arm bushings
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Bad outer xi ball joint?
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
jmo69 is offline   Reply With Quote
Old 09-24-2017, 10:26 AM   #35
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)
Yup, I was worried about cracking the radiator and creating a whole new mess (and disabling the car for a few days)
I was very careful and sparing with the pry bar, but it was not coming off without the pry bar.
OnTheFence is offline   Reply With Quote
Old 09-24-2017, 11:21 AM   #36
jmo69
Registered User
 
Join Date: Mar 2013
Location: Wisconsin
Posts: 5,861
My Ride: 03 325xi 98 328is
Someone should build a tool like an axle popper for the hoses. That way you could apply pressure at two points and the wedge action would aid separation.
__________________
Alternative to expensive xi control arm bushings
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Bad outer xi ball joint?
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
jmo69 is offline   Reply With Quote
Old 09-24-2017, 12:08 PM   #37
OnTheFence
Registered User
 
Join Date: Jan 2012
Location: 'merca
Posts: 2,363
My Ride: 2001 330i (and 530i)
Checked today, and I did not even have to top off the expansion tank. Amazing!
OnTheFence is offline   Reply With Quote
Old 09-24-2017, 07:08 PM   #38
jmo69
Registered User
 
Join Date: Mar 2013
Location: Wisconsin
Posts: 5,861
My Ride: 03 325xi 98 328is
Quote:
Originally Posted by OnTheFence View Post
Checked today, and I did not even have to top off the expansion tank. Amazing!
Don't you just love it when a plan comes together?
__________________
Alternative to expensive xi control arm bushings
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Bad outer xi ball joint?
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
jmo69 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON



All times are GMT -5. The time now is 05:26 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
(c) 1999 - VerticalScope Inc. All rights reserved.