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  1. E60 / E61 (2004 - 2010)
    Radiator fan isn't working even when car is up to temperature or if the AC is turned on. The fan connection from the car is a 3 wire harness. 2 big and 1 small wire the 2 big are power and ground im unsure what the 3rd small wire is maybe a signal im not sure. The 2 big wires have power 12v but...
  2. E36 (1991 - 1999)
    I recently fitted a new Nissens 60623A radiator to my E36. I wanted to replace the bleed screw but every single one I buy has a finer thread! I took the bleed screw out of my new radiator and compared it to the one from my previous radiator (which was also a Nissens 60623A) and found that the...
  3. 3 Series Hybrid
    A couple of days ago my 2016 330e with 50,099 miles started making an odd noise while charging. It sounded like the normal fan/cooling system noise that I would hear and then started to make an odd noise, like a pump that was working a bit harder. It's relatively warm in my garage here in...
  4. F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
    I have done some searching and didn't find an answer to my question, so here it goes. I have a 2017 330XI with about 37,000 miles. I bought the car about a month ago and have put about 3,000 mile on it. I love it. I feel that I used to hear the aux pump for the turbo running after shut down and...
  5. E39 (1997 - 2003)
    Hello, I was looking over my 03 525iT to get it ready for a drive cycle and smog test after abs module rebuild and noticed a few drops of coolant in the belts area and some coolant on the cooler line. I think it may be the water pump, recently replaced the thermostat and lower radiator hose and...
  6. X4 F26 (2015 - Current)
    Need your help plz, my x4 f26 has a Diesel engine 2.0xdrive , I want to bleed the coolant system and couldn’t find the bleeding screw, I don’t have an electric water pump. Help me plz
  7. X3 F25 (2011 - 2017)
    2011 BMW X3 xDrive28i with N52 Engine and I'm losing a very small amount of coolant. Expansion tank hose was getting rubbed by wiring harness and was seeping a very small amount of coolant from the damaged area. There were white spots below. Anyone else every experienced this? Made a video of...
  8. X3 E83 (2004 - 2010)
    2004 BMW X3, 6 speed manual transmission. Coolant leak at bottom of expansion tank, slow drip when cold, but gushes when the connector is pushed. Check out the video / gif. Drip appears to stop once engine warms up. Hoping its just o-rings, but not sure if the flex in the mount / connector is...
  9. X3 E83 (2004 - 2010)
    Vehicle: 2007 X3 3.0i (E83, M54). 142,000 miles currently. Symptom: The little radiator image idiot light would come on for a few moments a mile or two after starting of a new trip (from cold), then go out (the temp gauge was still rising to normal at this point). Later in the drive...
  10. 7 Series - E38 (1995 - 2001)
    So I replaced the water pump on the 740. Tell tail signs were rattly noises and coolant warning light on twice Note aux pump doesn't work Anyway I've struggled to bleed the cooling system for 3 days now. What I've done is overfill the expansion bottle until coolant came out of the bleed screw...
  11. 7 Series - E38 (1995 - 2001)
    I own a 2001 740il with 108,000 miles. As I mentioned in an earlier post, I had an overheating problem which I fixed by adding coolant and bleeding the system. However, what still concerns me is why it overheated in the first place. With that in mind and the number of miles on this car...
  12. 7 Series - E38 (1995 - 2001)
    I own a 2001 740il. A few weeks ago, my car overheated and when I got home, I found that the bleeder screw had broken in half and I lost my antifreeze. Thinking that was the problem, I bought a new (brass) bleeder screw and refilled and bled my system. Today when driving only about 5 miles, I...
  13. E90/E91/E92/E93 (2006 - 2013)
    Changed my coolant today. Regular maintenance for me. No big deal... Drain. Fill. Run bleeding procedure. Then I go to top it off. Tapped on the dipstick/float to check the coolant level. Guess what? Snap. Broke in half. Cannot find it great... Okay I'm done venting. What's your cooling system...
  14. E90/E91/E92/E93 (2006 - 2013)
    Hi all, I'm new to this forum and pretty new to DIY car repair. My 16 yr old bought a high-miles 325i and we're learning together. Please forgive my newbie ignorance of jargon. This plastic part is part of the cooling system that allows a coolant hose to connect to the upper part of the engine...
  15. E60 / E61 (2004 - 2010)
    I'm seriously considering buying a 2008 535i (1 previous owner, sport package, cold weather package, 60k miles = $13k) it looks pretty clean. Although, I'm hearing horror stories about the fuel injector problems, fuel pump problems, and general maintenance issues. I already planned on replacing...
  16. F10 / F11 (2011 - 2016)
    I'm looking at buying a 2008 BMW 535i (sport package, cold weather package in good condition) w/ 60k miles on it for about $13k. I'm wondering what have you guys experienced first hand with this cars reliability? I'm going to replace the water pump asap, flush and replace trans fluid as soon as...
  17. X3 E83 (2004 - 2010)
    1. Intermittent coolant low sensor coming on when on a downhill 2. Checked coolant everyday - not low 3. Fully checked by mechanic-- cooling system fine, oil leaks discovered at Vanos, main oil filter housing & Valve Cover Gasket. All oil leaks repaired. 4. Picked up car & coolant low sensor...
  18. E90/E91/E92/E93 (2006 - 2013)
    I have a 2008 328i, I was leaking coolant, decided to put k-seal in, the small leak turned into a large leak. I took it in for a diagnostic the result was "upper most expansion tank hose leaking coolant profusely. Coolant system contaminated by coolant stop leak additive. Advise complete cooling...
  19. 6 Series DIY
    Hi - 2006 e63 650i - Tried to research but couldn't find this exact answer. I'm trying to diagnose a cooling fan that doesn't spin. I read the voltage at the connector on the left side of the fan shroud, and I read voltage all the time, hot or cold, whenever the car is lit up. This tells me...
  20. E39 (1997 - 2003)
    Hi Bimmerfest, Car is a 2000 528i 5sp manual. Walking to my car from work today -- I noticed a leak underneath my car... Trying to figure out what it was, I wasn't sure and might have thought it was coolant... I didn't mind it. I bought the car over a year ago -- and I'm honestly not sure...
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