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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 02-19-2017, 10:55 AM   #1
patmappas
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Engine cooling problems

So last night after I raced my friend I looked on my dashboard and my engine was over heating! I pull over and there is like a storm of steam coming out near the coolant tank. We let it sit for a while to let it cool down and there was this boiling sound we heard also. I was trying to get it home and I was miles away from my house so it took me like 2 hours letting cool down even with coolant in the car... the last stretch I didn't feel like waiting so I kept on driving and my temp gauge peaked all the way but it was touching that little sliver not connecting to the overheating part. Any ideas with my piece of ****. I'm about to sell this money pit. I took it for a spin this morning and it drove fine. But after 5 mins the temp went crazy and I brought it home. Also OBD fusion said the engine temp was 240 while on my actual dashboard it said it was on regular temps

Last edited by patmappas; 02-19-2017 at 11:05 AM.
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Old 02-19-2017, 10:57 AM   #2
gonzo08452
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Oh boy...
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Old 02-19-2017, 11:19 AM   #3
YoitsTmac
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This car isn't for everyone


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Old 02-19-2017, 12:00 PM   #4
Solidjake
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This car isn't for everyone
Agreed....





OP, the cooling system was neglected and now you are paying the price. You should have NOT driven the car until it was fully cooled off. You now risk possible head gasket damage.

It wouldn't be that much of a money pit if it was maintained. Replace the cooling system, get a compression test done and hope it's good.

Last edited by Solidjake; 02-19-2017 at 12:01 PM.
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Old 02-19-2017, 12:28 PM   #5
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rip
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Old 02-19-2017, 04:01 PM   #6
Pro325ie46
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rip
Yup. RIP
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Old 02-19-2017, 04:36 PM   #7
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Old 02-19-2017, 09:00 PM   #8
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It's done
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Old 02-19-2017, 09:07 PM   #9
jmo69
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Old 02-19-2017, 09:09 PM   #10
Citruz
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If someday I see that my car is overheating it will be like if I see the death in person.

In every trip that I do, I can't avoid see the temp needle every 5 seconds.

I agreed too ,this car isn't for everyone.

This cars are for people with big balls.
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Old 02-20-2017, 10:12 AM   #11
Kierkegaard
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If someday I see that my car is overheating it will be like if I see the death in person.

In every trip that I do, I can't avoid see the temp needle every 5 seconds.

I agreed too ,this car isn't for everyone.

This cars are for people with big balls.

I learned this lesson with my old eg hatch. Now I look at my temperature gauge every ten seconds or so on any car I'm in.

OP, you have probably learned a $3k lesson with this little stunt. These Bimmers have soft blocks, which don't deal with excessive heat well. You had enough sense to research a community for the car you own, but not enough sense to utilize the vast array of knowledge here.

I can tell you without even looking a couple of nuggets of knowledge that I learned quickly by looking at the faqs. "Always replace cooling system every 60-80k miles. If it gets hot, TURN IT OFF AND TOW."

This place is full of tough love, but in order to make these beautiful machines purr into the later years, you need to be able to fade these kinds of problems. Or at the very least, learn from no nonsense types and preventatively care for them.

Update us to what you end up doing with your car, any information is good information.
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Old 02-20-2017, 07:36 PM   #12
MFND502
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I can tell you without even looking a couple of nuggets of knowledge that I learned quickly by looking at the faqs. "Always replace cooling system every 60-80k miles. If it gets hot, TURN IT OFF AND TOW."
I've owned an e46 for three weeks. Before the day I bought it, I knew nothing about them. I read the **** out of the wiki and this forum before I went to test drive it. The SINGLE point hammered over, and over, and over again was "cooling system".
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Old 02-20-2017, 08:22 PM   #13
Dogthebountyhunter
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Woah hold on, you took it for a drive and overheated it again? Did you replace anything or did you just hope it wouldn't leak that time? If you didn't goose it the first time you probably finished it the second time

Get ur self one of these. If you fail, time to go engine shopping.
http://www.blocktester.com/instructions.htm

Last edited by Dogthebountyhunter; 02-20-2017 at 08:26 PM.
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Old 02-20-2017, 09:44 PM   #14
tritron
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So would cause the car to overheat like that, I am sure that bmw did not design car to driven slow. I drove other cars fast without overheating. There is easy way to check for blow head gasket.
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Old 02-20-2017, 10:40 PM   #15
Kpriest
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Originally Posted by patmappas View Post
... the last stretch I didn't feel like waiting so I kept on driving and my temp gauge peaked all the way

Even overheating for a few seconds with the long aluminum head on this straight six engine can cause a blown head gasket and warped head.

Get a compression test done first. If you somehow have good compression you're extremely lucky. THEN overhaul your cooling system.

Like said above if you don't have good compression, due to a likely blown head gasket, you are looking at $3k or more.
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Old 02-20-2017, 10:48 PM   #16
Dogthebountyhunter
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Anything going wrong with the cooling system will cause it to overheat. Driving fast had nothing to do with it unless your tossing the car around and the car around or smashing bumps at high speed. (Ask me how I know). Your engine was under high load however, and most likely caused it to overheat. I wouldn't rely on that videos technique to diagnose a head gasket problem unless it was already pretty obvious. The problem is you overheated the car twice and I would say 80%'chance you need a new engine. The symptoms may not show up for a month or two, but the damage is most likely done. If your engine survives that I would suggest you buy a lottery ticket.

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Old 02-20-2017, 11:45 PM   #17
YoitsTmac
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Op ran away


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Old 02-21-2017, 10:45 AM   #18
GabeB
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For the love of god stop driving it! Either fix it or get it towed to a mechanic who can. You might get lucky and you didn't kill it.
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