Does your water temp move at all on track?

[alexk]

We had this discussion in another thread.

The water temperature should never move higher, on track full speed or not.
You car has a problem (radiator, water pump, head gasket / 1 or more..).
Get it checked.

[northernjim]

Originally Posted by shimmy

Sorry Rob, I thought. Said above you have to drive it flat out and at full throttle to get it......

is it not also the case on high mileage cars like robs....

Originally Posted by alexk

We had this discussion in another thread.

The water temperature should never move higher, on track full speed or not.
You car has a problem (radiator, water pump, head gasket / 1 or more..).
Get it checked.

be told James

[funtime]

I have a feeling... (and I'm hopeful I'm right) that it could just be the thermostat.

Reason being is I was driving it this evening and kept an eye on the temp, it got up to the middle but then went down and sat just a bit to the left of bang in the middle 'where it should stay all the time'. When I hit some B roads the temp went to half way and then maybe 1mm to the right of half way and when I backed off it came down to below the half way point.

This leads me to believe its the stat as it's actually overcooling at some points and not cooling enough at others. If the HG had gone or anything like injectors or water pump it would surely ALWAYS run too hot and never too cold like its doing?

Anyway, i'll get it checked out, but less worried about it now, we'll see what a thermostat does

Thanks for the replies though boys

And Rob - yes I did say that, but mine hasn't had a HG yet and yours along with a few others on here that have done half the miles have so that's all I was getting at. Never made it would be problem free...

[monkeycsl]

My temp gauge can be slightly to the left but never goes higher than half way could well be thermostat, but would prob do head gasket change on yours due to mileage and that you will be tracking her.

[shane@mbtech]

You should have bought bealos with ap and warranty

[grumps]

My temp gauge started to read just below half a few months back so i replaced the thermostat (gen) which made no difference,Oil temp is just as before! Any ideas?
Regards Pete

[alexk]

Originally Posted by grumps

My temp gauge started to read just below half a few months back so i replaced the thermostat (gen) which made no difference,Oil temp is just as before! Any ideas?
Regards Pete

I think your fan coupling has an issue and is always engaged (part number 2) and cools down the engine constantly.
Do you hear a "noise" .. .fan noise when you drive slowly with open windows ?

http://bmwfans.info/parts/catalog/E4..._fan_coupling/

[shane@mbtech]

Originally Posted by grumps

My temp gauge started to read just below half a few months back so i replaced the thermostat (gen) which made no difference,Oil temp is just as before! Any ideas?
Regards Pete

Originally Posted by alexk

I think your fan coupling has an issue and is always engaged (part number 2) and cools down the engine constantly.
Do you hear a "noise" .. .fan noise when you drive slowly with open windows ?

http://bmwfans.info/parts/catalog/E4..._fan_coupling/

As Alex says it is possibly your fans, but could also be faulty temp sender, so many possibilities. Better to read a tad low than too high

[grumps]

I had a new viscous coupling fitted late last year under warranty! as lawsy suggested i think its probably down to the sensor as it makes no difference if the weather is hot or cold and if the ac is on or off

[alexk]

I had the same high temp problem today on track. Almost touched the beggining of red.

It was quite hot @ 30 degrees.

As soon as I backed off the throttle, it immediately dropped.
Then, I continued revving up to 5500 and didn't have a problem.
I suspect it's the viscous fan as with the engine hot, it doesn't engage properly (lawsy knows the check I am sure).
Also, for a year now when I would slow down from high speeds in germany, the temp would drop a bit.
I will start with the viscous coupling of the fan.

shimmy, how do you explain that the HG problem results to increased temperature, when there is no impact in the water or oil flow ?
I am just trying to understand why there would be a temp issue.