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cooling system

  1. Cooling system overhaul/rebuild

    General E46 Forum
    My ownership of my 2001 325i has been great, it's probably the most fun I have ever had with a car, and it has turned me into a car/BMW guy. However, there has been a glaring issue with the car since I purchased it back in October of 2018. Coolant is leaking from somewhere and after 2 mechanics...
  2. Help! Strange problem!

    General E46 Forum
    Hello, :hi: I'm having a very strange problem with my E46 328i(M52TU). Some might say it's a head gasket, others will say its a cracked cylinder head or block. :argue: The problem occurred before 4 months. When i start up the car it miss fired very badly for 15-20 seconds. After that the car...
  3. Overheating in Traffic | Electric Fan, No leaks?

    E46 Xi Forum
    Hey guys, I had recently purchased a 2003 325xi (Manual), a little over a month ago. Everything up to last week had been perfectly fine until I was sitting in some pretty bad stop/go traffic and looked down to see the temperature gauge rising rapidly. I immediately pulled over and shut the...
  4. Totaled 323i

    General E46 Forum
    Its a sad day for fanatics everywhere.. Earlier this week my sister's 323 suffered a catastrophic cooling system failure. Was not given any details as to what exactly went wrong however we have been told it will not start and will need a new engine.. This is exactly why we turn our cars off...
  5. Strange whistle while engine is running!

    General E46 Forum
    So, I just replaced my oil filter housing gasket. I didn't notice anything out of the ordinary, like coolant leaks or other oil drips. All the cooling system parts were in good shape. I did replace the water pump/alternator etc. belt, which was cracked. Soon after that, I started hearing a...
  6. Coolant light comes on after flush

    DIY: Do It Yourself
    2006 325Ci with 44,000 miles. As far as I know, the cooling system has never been serviced, so I take it to Bobby Rahal BMW in Canonsburg PA to have that done. Now, the coolant light starts to come on occasionally. Goes off after a few miles. When the car cools down, and I check the radiator...
  7. E46 coolant level

    General E46 Forum
    I started my car (2005 325i) earlier today and the low coolant light flashed yellow on the dashboard. I shut the car off and turned it back on and the light disappeared. Fearing that it would overheat and leave me stranded if I drove it to work, I refused to drive the car until I had the issue...
  8. How can I tell if my cooling system has been recently overhauled?

    General E46 Forum
    Just bought a 2004 330xi with 150,000 miles. From what I've read on this site and others, it's clear that the cooling system needs to be overhauled at least once over the life of the vehicle. Is there any way to tell if it's been done recently? The vehicle has been well maintained by the...
  9. Cooling system replacement

    General E46 Forum
    OK, so I just got a price from the stealer for a cooling system leak. The tech states that the system is leaking from multiple places; he wants to replace basically the entire system, with the exception of the radiator itself. The price is $1278 +tax. 3 1/2 hours labor for $553 and the rest is...
  10. 2011 328i xDrive squealing like a pig

    E90, E91, E92 & E93 - General Forum
    I have a 2011 328i xDrive with 125,000 miles. Last week a squealing began when the engine was hot and at idle. The squeal subsides with increased RPMs and disappears around 2500 RPMs. Also the engine seems to idle a bit lower and rougher than previously. It's idling about 500-600 RPMs vs. the...
  11. Master Cooling Kit O-Ring locations...extra parts?

    DIY: Do It Yourself
    hi everyone. i have a 2001 330ci with manual transmission. am in the middle of installing the master cooling kit. getting ready to install new radiator, hoses and expansion tank. in the box that contained the new radiator, there was a a plastic bag with three O-rings (two larger and one...
  12. Where do you buy parts in Canada?

    General E46 Forum
    Hello everyone! Now as you can see by the title, I'm looking for a good site to buy parts from. I'm actually looking for a cooling system overhaul kit for my 325ci. I've been looking for quite a while and always resorted to purchasing parts from a shop called Jarry Auto Parts here in Montreal...
  13. How to bleed the cooling system.

    General E46 Forum
    This question seems to come up daily, so I made what I hope is a simple, easy to follow DIY. https://gumptiontrap.wordpress.com/2016/11/30/bmw-how-to-bleed-the-cooling-system/
  14. Stuck bleeder screw on upper radiator hose? My video can help! And save $$$!

    General E46 Forum
    Hope my video helps with getting out your stuck bleeder screw and save you money by just buying the screw and not the whole upper radiator hose. (80$) DONT BUY AFTER MARKET PLASTIC SCREWS! Only OEM, around 6$. https://youtu.be/4p0tep4D6kg
  15. 330i cracked radiator part . NEED HELP .

    General E46 Forum
    Hello , My first post ever but just wondering if I need to replace the whole radiator or If I can just buy the part alone . It's the plastic part attached on the right side of radiator next to the expansion tank . Not sure how to post a pic on here . Any help at all is appreciated .
  16. Summer and yet another cooling question.

    General E46 Forum
    Today was a pretty hot day around here and I was stuck in traffic at noon for a nice 45 minutes surrounded by other 300 running cars. I became concerned about the temp raising due to being stuck, with 90F outside and the A/C on so I used the hidden OBC. To my surprise, the temperature was a...
  17. Mishimoto ET

    General E46 Forum
    Hey guys i am about to do a change on some cooling system part and i saw the Mishimoto aluminum Expansion Tank, and i was wondering has anyone tried it. I looked and i have not found any reviews. Please help thanks !
  18. Emergency: Reduce the M54s thermostat operating temperature cheaply and quickly

    General E46 Forum
    Hey guys and gals, The YouTube channel "B is for Build" is currently patching together a 2001 e46 325i for Oregon's "500/500 Rally", where one takes a $500 car and drives it for 500 miles on fire roads and whatnot. Anyways, Chris of B is for Build has built a custom cooling system, but he'd...
  19. Cooling system issue/losing coolant somewhere (need input, maybe headgasket?)

    General E46 Forum
    Hey folks Running a 323Ci 159,000 miles. Automatic ZF 5HP19 So I've been getting leaks from the bleeder screw above the expansion tank. Replaced the screw. Went away for bit, now the leak is apparently back. I had the car up to rotate the tires today and I decided to look under the front to...
  20. Was in accident, Need some advice!!!

    E46 Xi Forum
    All right, so I got into an accident last August. Brought my car to a garage for the first time ever in my life since I thought I had collision, Turns out I was wrong. Told the guy I'd pay cash just fix my baby. Got a call two weeks later, All the mechanical stuff fix and he wanted to know what...
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