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  1. 5 Series DIY
    I recently did the valve stem seals, coolant transfer pipe and refreshed all the coolant hoses since I think they were all original. I used Rein hoses, not OEM. Took a 1500 mile road trip, no problems. Today, coming out of work, big puddle under the front of the car. Filled it with water, got...
  2. E90/E91/E92/E93 (2006 - 2013)
    Hey, I have a strange problem with the radiator fan on the E92 328i, I have searched all possible forums, and have not come across such a case: The engine heats up to a temperature of 93 degrees (water in the engine block), then the fan is started, which works at constantly higher revs and...
  3. E39 (1997 - 2003)
    Hi guys and gals I have an issue with my Thermostat, the problem is that it doesn't open, the car doesn't over heat I have changed the rad to an upgraded rad which is a performance rad which doesn't have the plastic on the side as every year my rad starts leaking on the top corner which I was a...
  4. E39 (1997 - 2003)
    Does anybody know what sizes the hoses that come off the expansion tank are? Like the bottom two. Just need to know because I have to lengthen out the hoses so I can get my new electric rad fan to fit properly.
  5. Parting Out
    Need a Johnson Gate 400W cooling fan blade for an N52 powered Z4. Hoping someone has replaced the whole unit for a blown motor will sell me their spare plastic.
  6. E46 (1999 - 2006)
    update in comment #5 below. ------------------------- original post ------------------------- for the last couple runs, i had enabled hidden onboard computer menu. and i was watching 7.0 for the engine temp. i noticed that after i parked and before the engine is turned off, the temperature...
  7. E39 (1997 - 2003)
    Can anyone help me, i wanted to add some more antifreeze into my 1997 523i and i wanted to bleed it, however, when i turn on climate control on max temp and fan on lowest, open both bleeding caps(screws), nothing is happening, tried even the highest fan setting, nothing, car blows hor air into...
  8. E90/E91/E92/E93 (2006 - 2013)
    So anytime I unlock my car or open the door the water pump is turning on even in the mornings when it hasn’t even been driven. I noticed that I started to leak coolant. I filed it up and it was empty again after a 15 min drive. Not sure what my problem is exactly, anyone got some advice or...
  9. E46 (1999 - 2006)
    Hey guys, I'm on this forum quite a lot, I just recently made an account tho Recently bought a 2000 328i with the M52TUB28, I haven't been able to find if the engine block is aluminum or iron. The car overheated yesterday because of a list of unlucky events and I'm planning on building it at...
  10. E36 (1991 - 1999)
    Hello, please can anyone tell me why some heads have missing cooling channels and some heads have all the channels? Thank you.
  11. Performance
    Local preferred. Looking to get rid of a CSF radiator, brand new. Part number 7064. I am in the NW Burbs, willing to meetup. $450.00
  12. E46 (1999 - 2006)
    I can't seem to find the name of this hose/line. It is #7. Does anyone know what it's called? If anyone could tell me I'd really appreciate it. Thanks!!
  13. 7 Series - F01 / F02 / F03 / F04 (2008 - 2015)
    I'm currently looking for the two coolant tanks in a 2013 BMW 750Li xDrive engine bay. However, I could only find one of the coolant reservoirs the one located under the engine cover, and there are two other reservoirs that I am not familiar with. I am familiar with the washer fluid reservoir...
  14. E39 (1997 - 2003)
    Ok so it’s not mine, it’s my brothers. He has a 523i 1998. Now he is not mechanical at all and couldn’t care less about a car, or it’s mainenance. I know what a horrible person he is. Now I was looking in the engine bay yesterday and I noticed dried coolant everywhere. I didn’t know where the...
  15. E90/E91/E92/E93 (2006 - 2013)
    First of all thank you in advance. I have been browsing the forum for years. But I haven’t had a reason to post anything since my car have been in excellent working conditions until today. I own a 328i N52 2006. Yesterday one of my cooling houses in the front of the engine broke right in the...
  16. E39 (1997 - 2003)
    I don't know what I can do more to solve this :( last year I had a severe overheating problem with my tranny and it was fixed by replacing clogged heat exchanger and voltage regulator (trans tstat). now I'm having overheating issue once again, not as severe though, it only happens if I do some...
  17. X3 E83 (2004 - 2010)
    Hopefully someone can help! I am desperate to find a replacement cooling fan for my 2007 E83 BMW X3 (3.0 diesel). Mine is currently broken and I am going on a long trip on Saturday. I understand these are on back order with BMW. Does anyone have an idea where I could get hold of one at short...
  18. E36 (1991 - 1999)
    Hey guys I am going to be bypassing the heater core because I think it is clogged with **** and not letting coolant flow and making the car overheat. I dont want to order a block off plate for the back of the head and at the firewall just yet. Was just wondering if I could just connect the inlet...
  19. E36 (1991 - 1999)
    Hey guys I just got my engine put back together from doing my headgasket and needed some head work. Everything works fine but im having trouble bleeding the coolant. When it starts coming up to temp all i get is boiling in the expansion tank. A few people have told me it could be a crack in the...
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