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  1. Overheating Issues

    General E46 Forum
    Hi, I was driving in my 2003 325i automatic when I noticed it was overheating, I stopped got out of the car and my coolant expansion tank blew up. I guessed I was low on coolant so it overheated. The next day I replaced it, filled it up, bled it, but I wasn't getting warm air from the air vents...
  2. E46 320CD overcooling

    General E46 Forum
    Hi everyone, i have an e46 diesel, my car used to get up to temp and then cool once on the motorway. I self- diagnosed this as a faulty thermostat and had it replaced. The car now stays at temp once its on the motorway. However, i have noticed that when i stop accelarating or going down hills or...
  3. '02 325ci Coolant System and Brake Caliper Questions

    General E46 Forum
    As always thanks for the expert insight and guidance .. I'm the original owner of this noted 2002 325ci. Only 31k miles. I ordered it back then with the available "Sport Package" option. For the lifespan of the car I've lived in a high-rise with an outdoor lot that is located about 200ft from...
  4. 2001 330xi Overheating Issue

    General E46 Forum
    Hello, I've got a 01 330xi (M54) that is running hot. I have an OBDII Scanner and OBD Fusion application. I just installed a brand new radiator and Upper and Lower hoses (Gates) and have probably used 10 gallons of antifreeze trying to keep it cooled down enough so I don't ruin the engine...
  5. Two loose white plastic fasteners on hoses to or from radiator

    General E46 Forum
    Hi again, Sorry for the weird title. Please see the attached pictures to know what I am talking about (FYI, the fasteners and hoses are on the drivers side of the expansion tank). The white plastic fasteners seen on the pictures (Red circles) were dangling around loosely. On the pictures I...
  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. Coolant level question for new-to-me 330ci

    General E46 Forum
    Coolant level question for new-to-me 330ci Hey guys, just got my first E46 and am totally stoked about it. It’s a beautiful 2000 323ci w/ 176k miles. I recently checked the coolant level and the red float stick was all the way down (not floating at all/won’t move if you push down on it...
  8. Red Line OBC TEMP -128!!

    General E46 Forum
    Hello all, I have lurked on this board for years now and have gained so much insight from the members posts, so firstly thanks to all who contribute. Well, I've come into a situation that has me baffled and from what I can glean from using the search, it's fairly uncommon. This morning with...
  9. Engine Overheat and Coolant leak

    General E46 Forum
    Pretty new to the E46 game. I have a 2004 325ci convertible. As I was driving back home today, I see white smoke from the hood, and smell as sweet burning smell, and the engine was overheating. So I pulled over and saw that the coolant was boiling. After I let the car cool down, I see that I was...
  10. Crashed my E46, is it fixable? I need your opinions.

    General E46 Forum
    Hello. This is my first post on this forum, and i would like some opinions related to the damage on my car. I come from Norway and was driving back to Uni during the autumn rush (The vacation just ended). I was stuck in queues the whole day, and the trip which usually takes two and a half...
  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. Radiator Passenger Side Mounting Screw Size and Type

    General E46 Forum
    Hey all, I was doing a bunch of maintenance and doing a cooling system overhaul. I was removing my radiator and realized the Torx screw was missing from the top passenger side mounting point on the top of the radiator. Does anyone know what size I can use? I searched and looked through OEM...
  13. For Sale:Bosch Cooling Fan Control Module

    Engine & Performance
    I have a Bosch Cooling Fan Control Module (1 137 328 115) that works on E46s. It is a Gen 2 type (latest) from a 2003 Ford Crown Victoria. It has no signs of corrosion and has tested out ok on my 2001. This should work well, if you have a 2001 to 2006 E46 (manjual or automatic) with a Bosch...
  14. Rad Fan Always on High

    General E46 Forum
    Hello, I have a 2006 330ci, 6 speed. Recently the fan got stuck on max constantly. It would even continue to run after the car was shut off. I got tired of plugging it in and out for every drive, so I replaced the fan. Now the fan is constantly on max when the car is on. However it turns off...
  15. M3 Electric Fan Conversion?

    ///M3 Forum
    Alright, so the auxiliary electric fan on my M is rattling around. It's bad enough to cause noises in the cabin with the windows up. From what I can tell, the fan is still in one piece but there is play in the motor allowing it to wobble when in use. It needs replaced. So the question is, could...
  16. Removing the coolant expansion tank

    General E46 Forum
    So I need to remove my coolant expansion tank to put in a new radiator. All the hoses connected to the expansion tank have all been extremely hard to wiggle off. And I only need to take one last hose off. It's the hose on the back of the expansion tank, at the bottom of it. It feels like it's...
  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. 330Ci radiator fan acting up

    General E46 Forum
    Hi everyone, first post to the forum. I've been lurking for the last few weeks since I bought my first car, an '04 330Ci (and have been trying to fix its problems :cry:) Anyway, I'm having a strange issue with my radiator fan. The first time I had an issue with it was when the car was idling in...
  19. 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...
  20. Bmw 323ci radiator Note

    General E46 Forum
    If you are looking for a radiator diy, click here http://lmgtfy.com/?q=bmw+323ci+radiator+diy Now to the purpose of this thread, finished replacing radiator for my bmw 323ci, manual transmission over the weekend. The DIY itself, I would rate it as beginner to intermediate, but sure was...
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