QUESTIONS ABOUT MY 1999 BMW 323i - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 01-24-2009, 09:55 AM
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QUESTIONS ABOUT MY 1999 BMW 323i

I RECENTLY PURCHASED A 99 BMW 323i. AT FIRST, IT DROVE WELL. THE NEXT DAY IT RAN HOT. I HAVE HAD A THERMOSTAT, WATER PUMP AND A BELT REPLACED ON IT, BUT IT IS STILL RUNNING HOT. THE FAN RUNS FINE ON IT. WHAT DOES THIS PROBLEM SOUND LIKE? IT IS LEAKING ANTIFREEZE ON THE DRIVER SIDE.

THE MECHANIC DID NOT BLEED THE COOLANT SYSTEM AFTER HE PUT THE PARTS ON. THEN, HE WENT BACK AND BLEED IT AND GOT THE AIR OUT.


ANY SUGGESTIONS WOULD BE HELPFUL!

THE CAR HAS 127K MILES ON IT AND IT IS AN AUTOMATIC
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#2 (permalink) Old 01-24-2009, 09:58 AM
OMFG another one!?
 
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The cooling system still has air in it I bet. Caps lock off please.

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#3 (permalink) Old 01-24-2009, 12:12 PM
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Viscous coupling??

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#4 (permalink) Old 01-24-2009, 01:06 PM
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what is that?
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#5 (permalink) Old 01-24-2009, 01:38 PM
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Quote:
Originally Posted by Grace1151 View Post
what is that?
The fan clutch. Has it been replaced? If not, your fan may not be running as fast as it should.

It is the fan that is [viscously] coupled to the engine. Open the hood, and try to spin it with your hand. There should be some resistance. If it spins freely, then the fan clutch needs to be replaced.

When does your car overheat? All the time? WHen going fast on the road? When you sit and idle? Please tell us as much as you can.

Auto or Manual?

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#6 (permalink) Old 01-24-2009, 02:55 PM
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It ran hot sitting still and while driving. The fan does not turn freely, and it is resistance.
It is an automatic and we have replaced the radiator cap too.

Last edited by Grace1151; 01-24-2009 at 02:58 PM.
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#7 (permalink) Old 02-15-2009, 01:36 PM
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Where is the leak coming from?

Anytime an aluminum engine overheats, I cringe. How many times has it overheated? Exactly how hot did it get? For how long?

I don't want to be the rain cloud, but blown head gaskets can easily cause overheating, and often will, for several reasons. They will often dribble/leak when the engine cools down as well. Hopefully you haven't walked into a car with major problems.

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#8 (permalink) Old 02-15-2009, 07:43 PM
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Leaking on the driver's side, huh? I'd bet the expansion tank has cracked. The thing is hard to inspect in place and, being made of plastic, is prone to failure... my 2000 323i had such a failure.
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