E39 viscous fan
Discussion
Hi, I've just bought an e39 528i sport.It seemed to have a noisy viscous fan so I took it to my local indie and they agreed.
First one they fitted seemed no better so took it back and fitted another.This one seemed a bit better but I think it was me hoping because it isn't .Took the car back today and they reckon it must be something else making the fan need to work. Any ideas maybe a temperature sensor? Help please it's driving me mad.
First one they fitted seemed no better so took it back and fitted another.This one seemed a bit better but I think it was me hoping because it isn't .Took the car back today and they reckon it must be something else making the fan need to work. Any ideas maybe a temperature sensor? Help please it's driving me mad.
chasdad said:
Hi, I've just bought an e39 528i sport.It seemed to have a noisy viscous fan so I took it to my local indie and they agreed.
First one they fitted seemed no better so took it back and fitted another.This one seemed a bit better but I think it was me hoping because it isn't .Took the car back today and they reckon it must be something else making the fan need to work. Any ideas maybe a temperature sensor? Help please it's driving me mad.
Long shot but is the water pump ok? Since the viscous fan attaches to it, if the bearings were shot in the water pump, I'd speculate that could make the fan sound a little dodgy. First one they fitted seemed no better so took it back and fitted another.This one seemed a bit better but I think it was me hoping because it isn't .Took the car back today and they reckon it must be something else making the fan need to work. Any ideas maybe a temperature sensor? Help please it's driving me mad.
Being as it's the wife's car I dont drive it much so Ive just gave it a run.it seems the fans loud when first started and it seems to go when the cars kept above 20 ish mph. Soon as I stop it gets louder. Is that normal for a new viscous do they have to bed in. It's not the water pump ,fans not wobbling orni bearing noises.
That sounds like the problem I had, which turned out to be the water pump. It was starting to seize so at tick over and low speeds the engine wasn’t providing enough power to turn it smoothly. As the belts were old I assumed it was the tensioner pulley (making the noise) but once everything was off it was apparent the pump was goosed by trying to turn it.
chasdad said:
Hi, I've just bought an e39 528i sport.It seemed to have a noisy viscous fan so I took it to my local indie and they agreed.
First one they fitted seemed no better so took it back and fitted another.This one seemed a bit better but I think it was me hoping because it isn't .Took the car back today and they reckon it must be something else making the fan need to work. Any ideas maybe a temperature sensor? Help please it's driving me mad.
You need a ZF or Behr. Nothing else.First one they fitted seemed no better so took it back and fitted another.This one seemed a bit better but I think it was me hoping because it isn't .Took the car back today and they reckon it must be something else making the fan need to work. Any ideas maybe a temperature sensor? Help please it's driving me mad.
Well the behr fan arrived today so I quickly bolted it on and went for a crawl through London traffic for an hour and a half - I couldn't actually get enough heat from the rad to get it running! (Either that or it runs very quietly). Temp gauge nailed to the middle, a lot more power and no 747 noises, result.
I know it works as it ran from the cold start.
The behr part looked a fair bit better quality side by side with the meyle.
I know it works as it ran from the cold start.
The behr part looked a fair bit better quality side by side with the meyle.
Gassing Station | BMW General | Top of Page | What's New | My Stuff