overheating - BMW Forum

Hoffmanericc36 · 08-16-2009, 12:22 AM

have 1998 m3, live in las vegas. car overheated got to the red and shut off. No smoke or anything. when car idles it is in middle of guage like it should, as soon as I drive the guage shoots to the red.... I was thinking thermostat or maybe fan clutch, it is barely moving, when i rev to around 3000 rpms, fan clutch is at same speed..... prior to overheating there was a whiny sound like a belt. any help would be appreciated.....

darkhorse737 · 08-16-2009, 12:27 AM

prior to restarting after your overheat? did u refill coolant and BLEED you system??

did you check oil level?

how many miles on ur M3? How is the idle after overheat? smooth or rougher than before?

Hoffmanericc36 · 08-16-2009, 12:36 AM

it over heated and shut off 2 min from my house... let sit for about 5 min, then drove to my house..... put in garage.... checked coolant level was a little low, added coolant. did not bleed system.... oil level fine. I have 158,000 miles. the idle seems to be fine haven't noticed a difference, the whiny belt sound from before isn;t as noticable. thanks

darkhorse737 · 08-16-2009, 01:31 AM

Quote:

Originally Posted by Hoffmanericc36

it over heated and shut off 2 min from my house... let sit for about 5 min, then drove to my house..... put in garage.... checked coolant level was a little low, added coolant. did not bleed system.... oil level fine. I have 158,000 miles. the idle seems to be fine haven't noticed a difference, the whiny belt sound from before isn;t as noticable. thanks

*REPLIED :-)

jrharman · 08-17-2009, 05:05 AM

I know my top hose blew off from the engine side and when i replaced the part and mine was overheating.. I found out a had to bleed my system for 30 mins b4 it would run correctly lol.. Just make sure that you see a stream of water coming out of your bleed screw.

FCPGroton · 08-17-2009, 03:46 PM

It could be your water pump. That would explain the noise you were hearing.

BeachBunny · 08-17-2009, 07:31 PM

Yea, the barely moving and reving sounds like when my water pump went (although I didn't hear anything because I had my music so loud). It wouldn't be uncommon for it to go with that many miles on it. Make sure you didn't crack your head gasket or anything before you toss any money into fixing the water pump (if that's what it is).

jbracefan1977 · 08-19-2009, 05:44 PM

Yeah, try checking your water pump, that happened with me once too. I even took my car into a mechanic, then he found out that something is wrong with my water pump.

Let us know if it worked.

Hope this helps.