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expansion tank

  1. No place for coolant level sensor

    General E46 Forum
    I just replaced my expansion tank with an all aluminum performance one and there is no place for the coolant level sensor. Any ideas on how to get rid of low level dash light?
  2. Pre road trip question. Boston, MA to Raleigh, NC

    General E46 Forum
    Hi everyone, Next month I will be moving from Boston, MA to Raleigh, NC and will be driving my 2005 325i for the 700ish mile / 11 hour trip. I was hoping to get some advice on any general preparations I should do for the car. I plan to get an oil change in the next week or so. In the last two...
  3. Bad headgasket/cracked block: leakdown #s good, but leaks into expansion tank

    General E46 Forum
    I am looking at a friend's 2003 325i (Oct 2002 build date) with 170k miles that has been losing coolant without any external leak and also suffering from intermittent cold start misfires (INPA codes 239, 240, 241, 242, 243; and P1347/P1349 type codes on obdfusion). This car was overheated after...
  4. Help overheating

    General E46 Forum
    I have a 00 328ci my engine is over heating... and leaking coolant.. the reason this all started is the fan wasn’t plugged in the sensor got unplugged and it over heated and exploded on the side of the road... coolant was everywhere. Since then I bought a new expansion tank and expansion tank...
  5. 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...
  6. ATF Thermostat Won't Sit Properly - HELP

    General E46 Forum
    First off, I have SCOURED Google and these forums for an answer, so sorry in advance if I missed it. Anyways, I have a 2000 323i and long story short, it overheated due to the idler pulley breaking, so now I'm replacing the expansion tank. When I went to pull out the old atf thermostat...
  7. Expansion tank kit for manual tans - '01 325i

    General E46 Forum
    Is there a kit for the manual trans version of the e46, or will the ones stating "for automatic transmission" still work? Looking for one that has the mount with it as well. When it popped, it took some of the radiator plastic and possibly parts of the mount with it. Thanks!
  8. Broken expansion tank bracket ?

    General E46 Forum
    So I currently have an issue whereby Iv broken the expansion tank mount where the ET top hangar is meant to hang on to. Could this be the reason why I can't seem to get the Expansion tank to seat no matter how hard I push down ?
  9. 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 .
  10. Possible blown head gasket on 2000 BMW 323ci ?

    General E46 Forum
    First of all, I know there are many posts under " head gasket" but this is my first post and I still had to ask before spending big bucks. A little background,(and the biggest regret of my car ownership life) I had to drive my car after the expansion tank cracked, all the coolant was leaking...
  11. What's this hose called? (help...)

    General E46 Forum
    Hey all, New to the forum here. I recently took ownership of my brother's hand-me-down, a 1999 BMW 323i (E46). While I was changing out the expansion tank, I noticed a pretty significant hole in a hose which is adjacent to the belt running between the alternator and power steering pump. The...
  12. So, um P1624 anyone?

    General E46 Forum
    So I just got the P1624 SES on my 2000 e46. I know this is computer/ engine specific, so I have a 2000 328i M52tub28 engine 5 speed auto/sport :thumbdwn: I believe the date of MFG is around march of 99. I've heard it could be the thermostat with my model and year. I replaced the upper/lower...
  13. 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 !
  14. Coolant Zerex....

    General E46 Forum
    Bmw Coolant Hey guys im new to e46s and i understand one of the first things to do is replace your old cooling system . But does the coolant really have to be the bmw coolant or can it be a regular one that is compatible with all year, all vehicle types ? Thanks in advance!
  15. Looking for an aluminium expansion tank and racing thermostat

    Australia
    Hi Guys, Looking to do my cooling system and have found some cool products online! Mishimoto do an aluminium expansion tank that I would love to get my hands on or something similar. I have also seen some thermostats that let the system run cooler. Does anyone know of any local shops that sell...
  16. Expansion tank good. Radiator not good.

    General E46 Forum
    2002 325i Just got this car. Coolant was low in the expansion tank. I filled it up, ran the car with heater. Filled it up again. When I stopped the second time, there was coolant steaming/spitting out of the top of the connection where the upper radiator hose connects to the radiator and the...
  17. E46 overheating! Help!

    General E46 Forum
    Hello all! I purchased my 2000 BMW 323i about a month ago. It currently has 134k miles. About five days ago I made a two hour drive to Tampa, FL and all seemed to be alright. I had the A/C on the entire time being that it was at least 90 degrees. When I was a few miles from my destination, I...
  18. Intermittent coolant light

    General E46 Forum
    Here's the situation, I drive a 2002 330Ci, 135k miles. A week ago the "Service Engine Soon" light lit up. Went to the dealer (on 6/19) and they replaced the thermostat. Drove it off the lot, and started loosing coolant, took it back and what a surprise, the expansion tank had to be replaced...
  19. It won't bleed!

    General E46 Forum
    Short version: I think there is air in the AT cooler portion of the cooling system. Any ideas? Longer version: My 325I developed a slow coolant leak from the water pump at 110K. I bought and installed a kit with a water pump, radiator, hoses, thermostat and housing, expansion tank, and...
  20. 2005 BMW E46 expansion leak - replacement questions

    General E46 Forum
    Hey guys, I have a slight leak at the bottom of my expansion tank. This seems to be the only place I am leaking coolant. All belts look dry and great. I am leaking where the lower hose connects into the bottom of the expansion tank. I am wondering besides the expansion tank, what should I...
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