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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!

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Old 06-27-2013, 07:57 PM   #1261
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Originally Posted by yetieater View Post
Yes, I'm aware. Statement number two could have been worded better.

Anyone have a part number or source for the bolt that passes through mechanical tensioner pulley, the one with T50 head?
Have you tried RealOEM?
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Old 06-27-2013, 08:48 PM   #1262
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Could it be one of these?

http://www.realoem.com/bmw/showparts...63&hg=11&fg=18

http://www.realoem.com/bmw/showparts...84&hg=12&fg=22

http://www.realoem.com/bmw/showparts...05&hg=11&fg=18

http://www.realoem.com/bmw/showparts...90&hg=11&fg=18

Last edited by Stinger9; 06-27-2013 at 08:52 PM.
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Old 06-27-2013, 09:04 PM   #1263
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No, because BMW doesn't sell the pulley (on mechanical tensioner) as a separate piece. The parts diagrams don't show the hardware in question.


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Old 06-27-2013, 09:19 PM   #1264
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Gotcha

Then not sold separately equals no part number.
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Old 06-27-2013, 09:46 PM   #1265
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after i pulled off the tensioner i noticed the boot was seperated and it was leaking now i gotta order that also . too bad i think my parts were coming in tomorrow
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Old 06-27-2013, 10:20 PM   #1266
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We advise replacing all parts in these systems at the same time. We learn from experience but new owners think one piece at a time is smarter.
Do the job once and do it right. Then don't worry for another 75K miles.
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Old 06-28-2013, 01:18 AM   #1267
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yeah now ill have to wait a couple more days . more time to party this weekend =]
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Old 06-28-2013, 01:38 AM   #1268
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Got around to changing my cooling system today, just to learn that all the hoses and expansion tank were from 2010 and have under 30k miles on them

But I actually need a radiator, that's where the slow leak came from... Oh well, can't hurt to have backups I suppose
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Old 07-02-2013, 02:44 PM   #1269
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took about 2 hours to put everything back together last night (about 1.5 hours to dismantle) went pretty smooth . drove it around today for about 50 miles in 100+ weather all seems well . big thanks to Mango and Stinger for your help . im at 185k i will set 250k for the next one . thanks again
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Old 07-02-2013, 06:31 PM   #1270
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Quote:
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We advise replacing all parts in these systems at the same time. We learn from experience but new owners think one piece at a time is smarter.
Do the job once and do it right. Then don't worry for another 75K miles.
Can you share your data with us? I think folks here make bold statements to influence the new folks. I would like to see how replacing a part compares to replacing the whole system.
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Old 07-02-2013, 08:29 PM   #1271
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Quote:
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Can you share your data with us? I think folks here make bold statements to influence the new folks. I would like to see how replacing a part compares to replacing the whole system.
In our developed country, where labor rates by the hour can easily hit $100, it is obvious that replacing the system at once can be cheaper both in dollars and in downtime than an "if it ain't broke, don't fix it" approach. Tough lesson to learn and potentially very costly.


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Old 07-06-2013, 03:47 PM   #1272
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Hey Mango, the bit about bleeding the system, do you first drain the old coolant from the block and radiator, plug the engine block drain, and start the bleeding procedure?
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Old 07-06-2013, 04:26 PM   #1273
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Drinking too much?

Poor guy worked for weeks getting every last fact and step precisely worded so there could be no mistake or misinterpretation, and you ask him to repeat and rephrase?
Please go back and reread the original instructions so you don't break the man's heart.
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Old 07-13-2013, 06:09 PM   #1274
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* E46 Cooling Guide (Information w/parts list/bleeding) *

Quick question a while back my EXpack burst so I bought a new one a thermostat and belt so after that it was fixed no more over heating good to go ! So last night I was at a car meet knowing my electric fan was inop I spaced out and let my car Idling (talking to a cute 25i driver lol) all of a sudden my bleeder screw blew out and it was a disaster anyway I replace it today top it off with some 50/50 and no more over heating...the issue is my coolant tank light keeps coming on BUT I'm sure I put enough in could there possibly be a piece of bleeder screw in the tank blocking the sensor...maybe I don't know I'm going to try bleeding it again or something it just confuses me because it goes away and them pops back on


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Old 07-13-2013, 06:19 PM   #1275
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Originally Posted by 325xi1luv View Post
Quick question a while back my EXpack burst so I bought a new one a thermostat and belt so after that it was fixed no more over heating good to go ! So last night I was at a car meet knowing my electric fan was inop I spaced out and let my car Idling (talking to a cute 25i driver lol) all of a sudden my bleeder screw blew out and it was a disaster anyway I replace it today top it off with some 50/50 and no more over heating...the issue is my coolant tank light keeps coming on BUT I'm sure I put enough in could there possibly be a piece of bleeder screw in the tank blocking the sensor...maybe I don't know I'm going to try bleeding it again or something it just confuses me because it goes away and them pops back on


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Positive your coolant level is correct? did you reuse your hoses when you replaced your expansion tank and thermostat? You should replace anything that hasn't been replaced. Weakest links will become weaker and just as this happened, you'll experience a:

-pop

-pop

-pop

They'll happen at different dates and will put you at high risk for permanent engine damage or dangerous situations while being stranded in a bad area at night.

Ensure your coolant level is fine when car is cold. If fine, then double check your sensor is plugged in. Pull it out and inspect - no coolant will leak out.
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Old 07-18-2013, 11:54 PM   #1276
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Bought this UV dye light kit for $15 for troubleshooting my friend's mysterious M3 coolant loss. Found the leak after one day of driving. Going to drive a few more days and recheck. Pic speaks for itself:

UV Light Dye Kit





Then I got curious and went on Amazon and found an even bigger LED UV flashlight

EVEN BIGGER UV 51-LED flashlight



Apparently it's OK to leave this stuff in the oil and coolant. I really don't want to put it in my coolant if I don't have to. Tomorrow I'll check if BMW coolant naturally glows or has some kind of dye in it?

I read some engine oils come with UV dye in it already. That's interesting. Never thought to try this stuff out.
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Old 07-18-2013, 11:54 PM   #1277
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Bought this UV dye light kit for $15 for troubleshooting my friend's mysterious M3 coolant loss. Found the leak after one day of driving. Going to drive a few more days and recheck. Pic speaks for itself:

UV Light Dye Kit





Then I got curious and went on Amazon and found an even bigger LED UV flashlight

EVEN BIGGER UV 51-LED flashlight



Apparently it's OK to leave this stuff in the oil and coolant. I really don't want to put it in my coolant if I don't have to. Tomorrow I'll check if BMW coolant naturally glows or has some kind of dye in it?

I read some engine oils come with UV dye in it already. That's interesting. Never thought to try this stuff out.
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Old 07-19-2013, 12:31 AM   #1278
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Cool stuff.

Why would you want dyed oil? You can see oil.
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Old 07-19-2013, 12:37 AM   #1279
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Cool stuff.

Why would you want dyed oil? You can see oil.
Makes things easier to spot. It'd be nice to just inspect the engine bay with a light to spot the tiniest of problems with a quick pass of a UV light. I guess that's why they make oil with uv dye in it already.

http://www.castrol.com/castrol/secti...tentId=7076439





The formulation also contains a fluorescent color that becomes visible under UV light this represents our signature of authenticity and quality, guaranteeing top performance.
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Old 07-19-2013, 12:43 AM   #1280
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I guess my point was you're going to detect oil in plenty of places where you'll do nothing about it. Oil gets everywhere on an engine.
And any meaningful leak where you'd want to replace the OFHG or VCG will be more than enough to not need UV.

But I do want one of those cool flashlights!
I've got a 100 LED light that looks the same, and got it for the same price, but it's visible spectrum.
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