E39 temperature reading

[Myken13]

Hi..may i know what is the normal reading temperature reading when driving on the road?mine driving for a 20 min distance it sometime show 40c.is it normal?I check the water level in the expansion tank it drop a bit when driving for a day.is it normal?May i know the best n cheap place to check is there any leaking?thanks all for giving the above info

 

[haywire]

Bro please do an introduction in the Newbies section as required by the forum rules.

Anyway for the outside temperature reading, -40C degrees is a common reading when the outside temperature sensor in front of your front right tyre under the bumper is faulty or missing.

Go to any reputable workshop they should be able to do a compression test of the cooling system for you.

 

[Jerman]

Hi..may i know what is the normal reading temperature reading when driving on the road?mine driving for a 20 min distance it sometime show 40c.is it normal?
I check the water level in the expansion tank it drop a bit when driving for a day.is it normal?
May i know the best n cheap place to check is there any leaking?thanks all for giving the above info

40'C is not normal. Water level should not decrease for a day driving.

 

[Myken13]

Bro please do an introduction in the Newbies section as required by the forum rules.

Anyway for the outside temperature reading, -40C degrees is a common reading when the outside temperature sensor in front of your front right tyre under the bumper is faulty or missing.

Go to any reputable workshop they should be able to do a compression test of the cooling system for you.

Bro..sorry where can click on the newbies section?i just bought an e39 2nd hand.i had a mg zt n s40 currently.i do some fixing for my e39 n recently just change the cooling coil n the undercover n also the cover for the wheel both side.can u recommend me a reasonable price workshop that i can go to?i am in kl n i am new in kl too.thanls

 

[Myken13]

40'C is not normal. Water level should not decrease for a day driving.

What do u think the problem is?i just bought a 2nd e39.i am new to bmw.i have a mg zt,s40 n ford escape.thanks bro

 

[wutty]

Presumably you are referring to the to temperature displayed on the instrument cluster, then it is not abnormal to get get 40C on a hot day especially when the car is stationary.

Pls note this is not the the coolant temperature. It is outside air temperature.

 

[haywire]

Newbie section here bro:

http://www.bmwclubmalaysia.com/forums/forumdisplay.php?30-Newbies

 

[Myken13]

Thanks bro wutty..yes is the temperature showing on dasboard.so is normal even after 20 minutes drive to get 40c?

 

[Myken13]

Tjanks haywire i done that..Pls let me know where can go to get a reasonable price check on my e39 problem.thanks bro

 

[haywire]

Thanks bro wutty..yes is the temperature showing on dasboard.so is normal even after 20 minutes drive to get 40c?

Doesnt matter how many minutes you're driving, its the reading of the outside temperature, and NOT the temperature of the engine.

The temperature sensor in underneath the front undertray, really close to the tarmac so on a really hot day it will read high temps. Even when you start the car it can show that temp if its hot.


If the temp sensor failed it will read minus (-) 40C degrees.

 

[Myken13]

Thanks hywire..anyway u would me to go for check out.

 

[Myken13]

Thanks hayWire..is it possible to recommend a good workshop that i can go to?thanks bro
I wanted to check the water level too

 

[seewai]

If stuck in traffic jam for extended duration, the "outside temperature" would also increase. I had 35.5C just now in a hour-long jam in KL city center. When I finally start rempitting in clearer roads, the outside temperature dropped to 28C.

Doesnt matter how many minutes you're driving, its the reading of the outside temperature, and NOT the temperature of the engine.

The temperature sensor in underneath the front undertray, really close to the tarmac so on a really hot day it will read high temps. Even when you start the car it can show that temp if its hot.


If the temp sensor failed it will read minus (-) 40C degrees.