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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 04-23-2013, 09:51 PM   #1
Htcchrisb
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Engine running hot

Hey guys I've got a question. When I drive my car for a long time or just kind of hard for a short period, it sounds like the fan is running so hard. It is really annoying and sounds really bad and I was just wondering if there was something I could do to keep my engine cooler.
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Old 04-23-2013, 11:27 PM   #2
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Check your coolant temp with your OBC...
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Old 04-27-2013, 12:26 PM   #3
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Re: Engine running hot

Well the last time I heard a similar sound of my fan running as you mentuined I said to myself wow! Now this engine is how I like it to sound but that night the fan cluch jam when I was driving in steptronics and the damage wasn't nice so take it in asap as it could be getting to the stage of your cluch fan failing hence why over heating also. That's speaking from my experience ok. Diagnosed it properly save yourself $3000 ok. Damage I had was shattered fan, messed up fan clutch, over flow bottle damage cam sensor, washer pump, temperature sensors shouder pkus wicked slash on the hood had to paint it.

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Old 04-27-2013, 01:41 PM   #4
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What's the temperature gauge say? As raymoon suggested, check it with the in-dash computer to see the actual temps. It may be as simple as the fan clutch needs replacing (or just get rid of the water pump-mounted fan and install the manual transmission electric puller fan instead).
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Old 04-27-2013, 01:46 PM   #5
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The temperature gauge reads fine it just sounds like the fan is working so hard to cool the engine.
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Old 04-27-2013, 02:11 PM   #6
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Check the on board computer to confirm the temperature gauge is reading correctly. If it's OK, then it's likely your fan clutch needs replacement. Although it's been awhile since I've had the fan clutch installed, I believe when the engine is cool, and turned off, the fan should spin freely or with a very little friction. If the fan clutch is bad, there would be alot of friction, so the fan is turning all the time, not just when the engine heats up.
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Old 04-27-2013, 03:48 PM   #7
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Re: Engine running hot

Thats the same thing that happen bro. Don't drive it get it checked out asap.

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Old 04-27-2013, 07:26 PM   #8
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Tell us the coolant temperature using the on-board computer function.
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Old 04-27-2013, 07:27 PM   #9
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How do I do that?
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Old 04-27-2013, 07:29 PM   #10
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Push the stalk, go to 19, on, then 7.0
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Old 04-28-2013, 10:22 PM   #11
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its summer and bmw likes run their engines hotter than normal... but to be safe i would do a coolant flush
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Old 04-28-2013, 10:23 PM   #12
Htcchrisb
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Quote:
Originally Posted by Solidjake View Post
Tell us the coolant temperature using the on-board computer function.
Alright and I'll tell you guys the coolant temp when it starts to make the noise again!
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Old 05-15-2013, 04:43 PM   #13
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Old 05-15-2013, 04:55 PM   #14
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Does it go higher than 96?
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Old 05-15-2013, 04:56 PM   #15
Htcchrisb
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Engine running hot

I'm not sure that's what it was at when I got done driving? Can I leave it on while I'm driving to see?


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Old 05-15-2013, 05:04 PM   #16
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Yea, you will see the temps fluctuate.
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Old 05-15-2013, 05:05 PM   #17
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Engine running hot

Alright well on my way home from work I'll turn it on and see.


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Old 05-15-2013, 06:23 PM   #18
Htcchrisb
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Engine running hot

Well while it idles I watched it and it reached a high of 99 but I've been driving for less than 4 minutes so I'll see what it gets to.


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Old 05-20-2013, 08:38 AM   #19
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Order yourself a fan clutch and fan blades and replace them before they give you a bigger problem.
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Old 05-20-2013, 09:18 AM   #20
Htcchrisb
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Engine running hot

Where would be the best place to buy them from, and is there a DIY on that?


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