engine fan stays on

[herr bmw]

as the title says.
first happened on the way to work on friday evening,rush hour traffic.
didnt use the car saturday and sunday.
today went throught to paulshof did it again and the through to lz dent shop,did it,
came back to pretoria still on stopped for an hour,went to the school,did it and left the car for an hour and a half.
went to the video shop,not even 15km fan on.

the a/c unit is switched off so cant be that,does anybody have any ideas and is it safe to drive like that?

thanks

 

[rhett325]

Oddly enough i had this problem in my 200ts.

Fan stayed on regardless of heat etc.

Realised it must have been a airlock keeping the thermostat open.

So.... I ran the car from cold with the cap off the filler bottle until it was hot, then proceeded to fill the system again with the car running, that obviously pushed the airlock out and freed the car of the issue.

Worth a try?

 

[herr bmw]

busy letting the car cool down now and will check that,did phone bmw and they want the car there tommorow

hope it isnt some thing serious as i need my car,they dont have a lone one for me

 

[herr bmw]

let the engin run with out the cap on air lock,fan came on after 5-10mins and sounded if it wanted to take off,keeps going faster ans faster,sounded like a cessna,doesnt switch off either.

hopefully bm can sort it out tommorow

 

[herr bmw]

so took the bm in this morning,they still ask me if its the ac fan,nope ac is off,say they will let me know by 10 this morning,and they will do the brakes for me at the same time,even though the computer tells me ive got 3800km left.

oh well lets see what happens

 

[herr bmw]

ok heard from bmw,thermostat is being replaced.

how come this has packed up with only 68000km on the car,ive driven golfs with much more kilos on and not even a problem,replaced one on a citi golf at 200 000k m only.

something not right.
has anybody else had this problem?

 

[P1000]

Probably just unlucky. The thermostat on your car is quite a bit more complex than a golf's, since the BMW's is electronically controlled to maintain higher engine temperature under certain circumstances to improve fuel economy...

 

[Philip Foglar]

Interesting, and thanks for sharing! Glad you got this sorted out too!! :=):

 

[ProGamesftw89]

*content removed*

 

[herr bmw]

Probably just unlucky. The thermostat on your car is quite a bit more complex than a golf's, since the BMW's is electronically controlled to maintain higher engine temperature under certain circumstances to improve fuel economy...

and i learn some thing new about a bm

 

[Legacy]

Thermostat on BM's is pretty weak from what I gather, my 318i's is busted i think not 100% sure and our 328i is definitely busted.